The following important highlighted information appears
throughout this document to warn of potential hazards or
to call attention to information that clarifies a procedure.
Carefully read all instructions and become familiar with
the devices before trying to install, operate, service or
maintain this equipment.
Indicates a hazardous situation that, if not avoided, will
result in death or serious injury.
Indicates a hazardous situation that, if not avoided, could
result in death or serious injury.
Failure to comply with these instructions may result in
product damage.
TRADEMARKS
EntelliGuard® WavePro®
Power Break® Power +®
MicroVersaTrip® EPIC®
ProTrip®
WARRANTY
This document is based on information available at the
time of its publication. While efforts have been made to
ensure accuracy, the information contained herein does
not cover all details or variations in hardware and
software, nor does it provide for every possible
contingency in connection with installation, operation,
and maintenance. Features may be described herein that
are not present in all hardware and software systems. GE
Industrial Solutions assumes no obligation of notice to
holders of this document with respect to changes
subsequently made. GE Industrial Solutions makes no
representation or warranty, expressed, implied, or
statutory, with respect to, and assumes no responsibility
for the accuracy, completeness, sufficiency, or usefulness
of the information contained herein. No warrantees of
merchantability or fitness for purpose shall apply.
Contact your local sales office if further information is
required concerning any aspect of EntelliGuard G, AKR,
Power Break, Power Break II and WavePro circuit breaker
operation or maintenance.
Indicates important information that must be
remembered and aids in job performance.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
SECTION 1. General Information ................................................................................................................................................................ 1
Front Panel Display ............................................................................................................................................................................................................................ 1
Menu Access .......................................................................................................................................................................................................................................... 2
GTU Order Code ................................................................................................................................................................................................................................... 4
Installing the Setup Software .................................................................................................................................................................................................. 4
System Requirements ............................................................................................................................................................................................................ 4
Long Time Protection ........................................................................................................................................................................................................................ 7
Long Time Pickup ........................................................................................................................................................................................................................... 7
Long Time Delay ............................................................................................................................................................................................................................. 7
Thermal Long Time Overcurrent ............................................................................................................................................................................................ 7
Fuse Shaped Steep Long Time Overcurrent .................................................................................................................................................................... 8
Short Time Protection ....................................................................................................................................................................................................................... 9
Short Time Pickup .......................................................................................................................................................................................................................... 9
Short Time Delay ......................................................................................................................................................................................................................... 10
Short Time Slope .......................................................................................................................................................................................................................... 10
WaveForm Recognition vs. Peak Sensing ...................................................................................................................................................................... 11
Reduced Energy Let Through (RELT) ................................................................................................................................................................................. 11
Current Alarm................................................................................................................................................................................................................................ 13
Zone Selective Interlocking ......................................................................................................................................................................................................... 14
Making Current Release (MCR) ............................................................................................................................................................................................. 16
High Set Instantaneous Protection (HSIOC) .................................................................................................................................................................. 16
Voltage Unbalance ..................................................................................................................................................................................................................... 17
Current Unbalance ..................................................................................................................................................................................................................... 17
Zero Voltage Trip ......................................................................................................................................................................................................................... 17
Power Reversal Relay................................................................................................................................................................................................................ 18
Power Direction Setup......................................................................................................................................................................................................... 18
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
SECTION 3. Setting up the Trip Unit ....................................................................................................................................................... 22
Fan/Command Close Control ................................................................................................................................................................................................ 19
Bell Alarm Accessory ....................................................................................................................................................................................................................... 20
Bell Alarm with Lock-out Accessory Configuration Setup (applies to Power Break II and WavePro Trip Units only) ............. 20
Bell Alarm Operation – EntelliGuard G breakers ......................................................................................................................................................... 20
Digital Input Relays .......................................................................................................................................................................................................................... 21
Long Time Pickup .............................................................................................................................................................................................................................. 22
Long Time Delay ................................................................................................................................................................................................................................ 22
Short Time Pickup ............................................................................................................................................................................................................................. 22
Short Time Delay ............................................................................................................................................................................................................................... 22
Short Time Slope ............................................................................................................................................................................................................................... 23
Zone Selective Interlocking Setup ............................................................................................................................................................................................ 26
Zone Selective Interlock Short Time (ST) Setup ................................................................................................................................................................. 27
Zone Selective Interlock Ground Fault Setup ..................................................................................................................................................................... 27
Voltage Unbalance Relay ............................................................................................................................................................................................................. 27
Zero Voltage Tripping ..................................................................................................................................................................................................................... 28
Current Unbalance Relay.............................................................................................................................................................................................................. 28
Power Reversal................................................................................................................................................................................................................................... 29
Output Relay – Group 1 ................................................................................................................................................................................................................. 29
Output Relay – Group 2 ................................................................................................................................................................................................................. 29
Output Relay – Group 3 ................................................................................................................................................................................................................. 29
Output Relay – Group 4 and 5 .................................................................................................................................................................................................... 30
Output Relay – Group 6 ................................................................................................................................................................................................................. 30
Output Relay – Group 7 ................................................................................................................................................................................................................. 30
Output Relay – Groups 9, 10 and 11 ....................................................................................................................................................................................... 31
Digital Input Configuration .......................................................................................................................................................................................................... 31
Current Alarms ................................................................................................................................................................................................................................... 31
Neutral Pole (EntelliGuard G only) ............................................................................................................................................................................................ 32
Bell Alarm Lockout (PBII and WavePro only) ....................................................................................................................................................................... 32
Bell Alarm .............................................................................................................................................................................................................................................. 32
Power Demand Interval ................................................................................................................................................................................................................. 33
PT Voltage ............................................................................................................................................................................................................................................. 33
Power Direction ................................................................................................................................................................................................................................. 33
Frequency ............................................................................................................................................................................................................................................. 34
SECTION 7. Trip Unit Integration ............................................................................................................................................................. 45
SECTION 8. Serial Communication ......................................................................................................................................................... 48
Date and Time .................................................................................................................................................................................................................................... 34
Language ............................................................................................................................................................................................................................................. 34
Current Metering Display ............................................................................................................................................................................................................. 36
External CT Current Metering Display (EntelliGuard G only) ...................................................................................................................................... 36
Voltage Metering Display ............................................................................................................................................................................................................. 36
Power Metering Display: PH –PH .............................................................................................................................................................................................. 37
Power Metering Display—PH—N .............................................................................................................................................................................................. 37
Energy Metering Display ............................................................................................................................................................................................................... 37
Frequency Metering Display ....................................................................................................................................................................................................... 37
Power Factor Metering Display ................................................................................................................................................................................................. 37
Settings Status Screen................................................................................................................................................................................................................... 38
Pickup Status Messages ............................................................................................................................................................................................................... 38
Breaker Status Indications .......................................................................................................................................................................................................... 39
RELT Status Indications ................................................................................................................................................................................................................. 40
Communication Settings .............................................................................................................................................................................................................. 41
Long Time Trip Event Messages ............................................................................................................................................................................................... 42
Short Time Trip Event Messages .............................................................................................................................................................................................. 42
Modbus Baud Rate and Port Configuration .................................................................................................................................................................. 48
Modbus Function Codes .......................................................................................................................................................................................................... 49
Modbus RTU Message Format ............................................................................................................................................................................................. 50
EntelliGuard Trip Unit Function Code ..................................................................................................................................................................................... 50
Function Code 03H ..................................................................................................................................................................................................................... 51
Function Code 04H ..................................................................................................................................................................................................................... 51
Function Code 05H ..................................................................................................................................................................................................................... 51
Function Code 06H ..................................................................................................................................................................................................................... 52
Function Code 10H ..................................................................................................................................................................................................................... 52
Function Code 20H ..................................................................................................................................................................................................................... 53
Step 1: Set up the Serial Port on the Master Device .................................................................................................................................................. 53
Step 2: Configure the Communication Settings on the Trip Unit: Baud Rate, Parity, Stop Bits, Modbus Slave Address/ID 54
Step 3: Supply 24VDC to the Trip Unit, and Connect the Trip Unit to the Computer ............................................................................... 54
Step 4: Configure the Master’s Communication Parameters ............................................................................................................................... 54
Step 5: Attempt to Communicate with the Device .................................................................................................................................................... 54
Profibus System Concept.............................................................................................................................................................................................................. 55
Communication Setup and Station Addresses ................................................................................................................................................................. 55
Profibus GTU DP Cyclic Data ....................................................................................................................................................................................................... 56
Battery Function ................................................................................................................................................................................................................................ 58
Rating Plug Removal and Replacement ............................................................................................................................................................................... 59
Other General Troubleshooting Issues ............................................................................................................................................................................. 61
Trip Unit Removal and Replacement ...................................................................................................................................................................................... 63
Power Break I and Power Break II Insulated Case Circuit Breakers ................................................................................................................. 63
Trip Unit Removal ................................................................................................................................................................................................................... 63
Trip Unit Reinstallation ......................................................................................................................................................................................................... 64
AKR (225 A to 5000 A Frames) Circuit Breakers ........................................................................................................................................................... 64
EntelliGuard G Circuit Breaker Installation ..................................................................................................................................................................... 65
Trip Unit Removal (Figure 13-4 through Figure 13-7).......................................................................................................................................... 65
Trip Unit Reinstallation ......................................................................................................................................................................................................... 65
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
TABLE OF FIGURES
Figure 1-1: EntelliGuard G Trip Units .............................................................................................................................................................................................. 1
Figure 1-2: Power Break II and WavePro Trip Units ............................................................................................................................................................... 2
Figure 1-3: Power Break I, AK, AKR, Conversion Kit Trip Units .......................................................................................................................................... 2
Figure 1-4: EntelliGuard G Trip Units .............................................................................................................................................................................................. 2
Figure 1-5: Trip Unit Keypad and Functions ............................................................................................................................................................................... 2
Figure 2-1: Long Time Pickup Settings .......................................................................................................................................................................................... 7
Figure 2-2: Long Time Delay Settings ............................................................................................................................................................................................ 7
Figure 2-3: Short Time Pickup Time Current Curve................................................................................................................................................................. 9
Figure 2-4: Short Time Delay ........................................................................................................................................................................................................... 10
Figure 2-6: Voltage Conditioner Plate Wiring — Wye ......................................................................................................................................................... 18
Figure 2-7: Voltage Conditioner Plate Wiring — Delta ....................................................................................................................................................... 19
Figure 3-1: Short Time Slope ........................................................................................................................................................................................................... 23
Figure 3-3: Ground Fault Sum Slope, Option 3 ...................................................................................................................................................................... 25
Figure 7-1: RELT Connection when Using Positive Feedback from EntelliGuard TU Trip Unit ...................................................................... 45
Figure 7-2: RELT Connection Without Positive Feedback from EntelliGuard TU Trip Unit .............................................................................. 45
Figure 7-4: Incorrect and Correct TIM1 Wiring ...................................................................................................................................................................... 46
Figure 7-5: Six Trip Units Connected in Parallel to a Single Downstream TIM1 Input Pair ............................................................................. 47
Figure 7-6: TIM1 Zone Wiring Diagram ...................................................................................................................................................................................... 47
Figure 8-1: RS-232 and RS-485 Connections ......................................................................................................................................................................... 49
Figure 8-2: Wiring for Shield Grounding .................................................................................................................................................................................... 50
Figure 9-1: Profibus Communication Network ...................................................................................................................................................................... 55
Figure 11-1: Trip Unit with Rating Plug Removed................................................................................................................................................................. 59
Figure 13-1: Removing the Old Trip Unit ................................................................................................................................................................................... 64
Figure 13-2: Circuit Breaker without Trip Unit ........................................................................................................................................................................ 64
Figure 13-3: Installing the New Trip Unit ................................................................................................................................................................................... 65
Figure 13-4: Trip Unit Removal Sequence, Step A ................................................................................................................................................................ 65
Figure 13-5: Trip Unit Removal Sequence, Step B ................................................................................................................................................................ 65
Figure 13-6: Trip Unit Removal Sequence, Step C ................................................................................................................................................................ 65
Figure 13-7: Trip Unit Removal Sequence, Step D ............................................................................................................................................................... 65
Table 2-1: Nominal Time Delays for Thermal Shaped Long Time Bands ....................................................................................................................8
Table 2-2: Nominal Clearing Times for Fuse Shaped Long Time Bands ......................................................................................................................9
Table 2-3: Short Time Commit Times ........................................................................................................................................................................................... 10
Table 2-4: Short Time Settings by Breaker Type and Frame ........................................................................................................................................... 10
Table 2-5: Short Time Delay Settings ........................................................................................................................................................................................... 10
Table 2-6: Maximum Instantaneous for Power Break I, Power Break II, WavePro and AKR Trip Units .................................................... 11
Table 2-7: Instantaneous Thresholds for Power Break I, Power Break II, WavePro and AKR Trip Units .................................................. 12
Table 2-10: Voltage Unbalance Settings ................................................................................................................................................................................... 17
Table 2-11: Current Unbalance Settings.................................................................................................................................................................................... 17
Table 2-12: Under Voltage Settings .............................................................................................................................................................................................. 17
Table 2-13: Over Voltage Settings ................................................................................................................................................................................................. 18
Table 2-14: Power Reversal Settings ........................................................................................................................................................................................... 18
Table 8-1: Function Code 03H Example ..................................................................................................................................................................................... 51
Table 8-2: Modbus Packet Format for Function Code 03H .............................................................................................................................................. 51
Table 8-3: Modbus Packet Format for Function Code 04H .............................................................................................................................................. 51
Table 8-4: Modbus Packet Format for Function Code 05H .............................................................................................................................................. 52
Table 8-5: Modbus Packet Format for Function Code 06H .............................................................................................................................................. 52
Table 8-6: Modbus Packet Format for Function Code 10H .............................................................................................................................................. 52
Table 8-7: Modbus Packet Format for Function Code 20 ................................................................................................................................................. 53
Table 8-8: Slave Responses to Errors .......................................................................................................................................................................................... 53
Table A-8: Frame Rating (amperes) Digit 3 for TYPE A Conversion Kits ..................................................................................................................... 67
Table A-20: PowerBreak I & II Digits 6 & 7 ................................................................................................................................................................................ 70
Table A-21: EntelliGuard G ANSI and UL Low-cost ACB Digits 6 & 7 .......................................................................................................................... 70
Table A-22: CVCB MTU IEC Medium Voltage OC Protection Digits 6 & 7 .................................................................................................................. 70
Table A-23: Zone Selective Interlocking Digit 8 ..................................................................................................................................................................... 70
Table A-24: Advanced Features and Communications Col. 9 ....................................................................................................................................... 71
Table A-26: Original or Replacement Trip Unit Col. 11 ....................................................................................................................................................... 71
Table B-1: EntelliGuard G ACB Rating Plug Nomenclature .............................................................................................................................................. 72
Table C-4: Discrete Inputs from GTU ........................................................................................................................................................................................... 89
Table D-1: ST Band Comparisons.................................................................................................................................................................................................. 90
Table E-1: GTU-C Power Break I and AKR Trip Units ........................................................................................................................................................... 91
Table E-2: GTU-D PowerBreak II and WavePro ...................................................................................................................................................................... 91
Table E-4: Pin Out for Legacy Breakers ..................................................................................................................................................................................... 93
Table E-5: Pin Out for GTUTK20 Test Kit..................................................................................................................................................................................... 94
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
General Information
SECTION 1. GENERAL INFORMATION
WARNING
(EntelliGuard G only)
Pin Connector on back of all trip
The EntelliGuard TU Trip Unit is an electronic device that
interfaces with a circuit breaker. It monitors current and/or
voltage and trips the breaker in the event of an overcurrent or voltage related condition. It also provides
protective relay functions, advanced metering, diagnostic
features, and communications. The Trip Unit can be
removed or replaced in the field by de-energizing and
removing the cover of the circuit breaker.
The Trip Unit drives the circuit breaker flux shifter to
provide the electromechanical tripping function. A user
interface is provided on the front panel to allow adjustment
of the Trip Unit’s parameters.
EntelliGuard TU Trip Unit has been designed to be plug and
play compatible with previous generation trip units,
MicroVersa Trip, MVT RMS-9, EPIC, MVT Plus, MVT PM,
Power+, and ProTrip. In addition to trip unit upgrades,
Figure 1-1: EntelliGuard G Trip Units
40 Pin Connector on top
conversion kits are offered to upgrade ANSI type legacy
breakers.
FRONT PANEL DISPLAY
The Trip Unit includes a graphical Liquid Crystal Display
(LCD). The front panel is similar to those shown in
Figure 1-1 through Figure 1-5.
When the trip unit is energized the LCD normally displays a
menu of navigation options. If the trip unit is powered from
an external DC supply, a backlight is provided and remains
on. If the trip unit is powered from the circuit breaker’s
Current Transformers alone there is no backlight, but the
navigation menu is available as long as current flow is at
least 20% of the breaker’s sensor rating. If the display is
blank, pressing any key will turn on the menu using battery
power.
Catalog Number
LCD Screen
Navigation Panel
unit types, see images below for
specifics by breaker.
BOX SIZE AND CONNECTOR CONFIGURATION COMMONALITY DOES NOT SUGGEST INTERCHANGEABILITY BETWEEN
POWERBREAK II AND WAVEPRO OR POWERBREAK 1 AND AKR. THE OPTIONS ON THESE TRIP UNITS ARE DIFFERENT AND
WILL CAUSE THEM TO BEHAVE AND OPERATE
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
General Information
WARNING
IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE
Failure to comply with these instructions could result
in death or serious injury.
Primary Current flow:
+24 VDC control power
Internal battery power
NOTICE
If 24 VDC supply drops below 22V, expect the
backlight of the trip unit to dim or shut off. In order to
ensure this does not happen, have a reliable,
consistent source of 24VDC.
BIM
RELT
ZSI
WFR
ELECTRICAL REQUIREMENTS
Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.
EQUIPMENT INTERFACES
PowerBreak I, PowerBreak II, WavePro, AK, AKR, Conversion
Kits (for GE and other manufacturer breakers) and
EntelliGuard G Circuit Breakers.
Trip units do not require direct connections to the
equipment. All trip unit connections external to the breaker
are made through the circuit breaker secondary
disconnect.
PowerBreak I, PowerBreak II, WavePro, AKR and
EntelliGuard G Trip Units are powered from three different
sources:
•
sufficient power to energize the LCD when at least 20%
of the sensor's ampere rating is flowing.
•
the circuit breaker’s secondary disconnect, or from the
GTUTK20 test kit, or from the portable battery pack,
(TVPBP and TVPBPACC). Each GTU draws 90mA
maximum.
•
when any keypad key is pressed. Battery power
automatically turns off 20 sec after the last keypad
press. The battery power supply is disabled when any
current over 20% of the sensor rating is sensed through
the current sensors. Breaker status (open/closed) is not
reported under battery power.
Functions that require external 24 VDC:
• Communication (Modbus and Profibus)
• Zone Selective Interlocking—(Instantaneous only)
• WaveForm Capture
• Event log with time stamp
• Backlight
• Advanced Metering
• Relaying
• Input/output Contacts
• RELT – Reduced Energy Let Through
Breaker current sensors provide
. This is supplied externally, via
: Powers the unit temporarily
The following trip unit interfaces are available at the
secondary disconnect:
• Serial Communications (RS-485)
• Zone Selective Interlocking digital input and output
• Digital Inputs (2)
• Relay Outputs (2)
• Fan control digital output (5000A WavePro and AKR)
• Remote Close digital output (EntelliGuard G with
Command Close Coils)
• Potential Transformer analog voltage Input
• Zero Sequence Current Transformer analog input
• 4th Pole Iron Core/Rogowski (neutral sensor) analog
input
The front panel test kit port provides an interface to the
GTUTK20 digital test kit. See DEH-4568A for additional
detail.
In addition, the MVT portable battery pack (TVPBP) can also
be used on the GTU using the TVPBPACC adaptor cable.
DEFINITIONS
: Breaker Interface Module (only on EntelliGuard G). This
is a non-volatile memory device on the circuit breaker that
defines the breaker’s configuration to the trip unit. The BIM
stores configuration information on the breaker sensor
rating, it’s interrupting capacity, and the agency
requirements (UL, IEC, ANSI) the breaker meets.
: Reduced Energy Let Through. A second
instantaneous trip function that can be temporarily
engaged during maintenance procedures to ensure the
breaker trips as quickly as possible to limit arc flash
damage.
: Zone Selective Interlocking: A wired signaling scheme
between cascaded breakers that enhances coordination
and can improve protection without impacting selectivity.
Available on Short Time, Ground Fault and Instantaneous.
: Wave Form Recognition is the algorithm used in the
EntelliGuard G adjustable selective instantaneous trip
element to discern between unfettered fault current and
3
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
General Information
WFC
Close and Latch Rating
HSIOC
In: Trip Plug Rating in amperes. This is the current rating of
Icw: Short Time Withstand Rating of a particular circuit
I
RMS
Making Current Release (MCR)
X
xlCT: Multiples of current sensor rating (non-dimensional)
GTU
Order Code
Representation
Digit 9
Advanced Features &
the high peak, low energy let-through current allowed by a
Table 1-1: GTU Nomenclature
current limiting fuse or circuit breaker while in the process
of melting or tripping. This algorithm allows the adjustable
selective instantaneous to be set low and yet be selective
in high prospective fault current systems. WFR allows
circuit breakers to trip instantaneously for faults within
their zone of protection while maintaining instantaneous
clearing times in the 3-3.5 cycle range, depending on
circuit breaker type, facilitating maximum arc flash
mitigation possible with no sacrifice in selectivity.
: Waveform Capture – an optional feature that
captures an oscillographic record of system current and
voltage at the moment the breaker trip unit is triggered.
Digit 1 and 2 EntelliGuard Trip Unit Form
Digit 3 Frame Rating (Amperes) Short
Circuit/Withstand
Digit 4 and 5 Sensor Rating (Amperes)
Digit 6 and 7 Overcurrent and Ground Fault
Protection Packages
Digit 8 Zone Selective Interlocking
Communications
Digit 10 Manual/Auto Trip Reset
circuit breaker can close into and successfully latch.
: High Set Instantaneous Overcurrent, also known as
an instantaneous Override. A fixed instantaneous
function that operates if the breaker experiences a fault
: the maximum fault current a
Digit 11 Original or Replacement Trip Unit
Digits 12, 13,
RESERVED (Future)
14, and 15
SETUP SOFTWARE
exceeding its Short Time Rating (Icw).
The EntelliGuard Setup Software provides a graphical user
the rating plug installed in the trip unit. This is the
maximum Long Time pick up a trip unit can have with a
specific plug installed. A sensor can be applied with plugs
between 37.5% or 40% to 100% of the sensor rating. Plugs
interface (GUI) to configure and monitor the operation of
EntelliGuard Trip Unit functions. The software allows you to
save setting files offline to be loaded or compared with
current settings. It provides a means of creating
documentation regarding all the trip unit settings.
are labeled in amperes.
The software also provides a tool to extract and view
breaker in amperes. The withstand rating is defined
differently within different standards, but it is always the
value of current that a circuit breaker can withstand for the
captured waveforms from EntelliGuard trip units equipped
with optional the Waveform Capture feature. This feature
also provides a means of determining harmonic content of
the power system.
maximum Short Time Delay before interrupting.
The EntelliGuard Setup software is available at no charge
: True RMS current measurement through a phase
: This is an instantaneous
override that will trip the circuit breaker if it is closed into a
fault exceeding the breaker’s close and latch rating.
: X is a multiplier that may be applied in front of any rating
value to denote a fraction of that rating. Ex: The Long Time
Pickup is may be set at 0.5X of In.
: Shorthand/abbreviation for EntelliGuard TU Trip Unit
GTU ORDER CODE
from either the GE EntelliGuard CD or the GE Industrial
Solutions web-site.
In on-line mode the tool is connected over communication
networks - Serial or Ethernet, you can communicate with
an EntelliGuard device in real-time.
In off-line (Disconnected) mode, a settings file can be
created for eventual downloading to the device.
Installing the Setup Software
The following minimum requirements must be met for the
EntelliGuard Setup software to operate on your computer.
Below is the breakdown of what each column of the GTU
order code represents. For specific possibilities see
Appendix A: GTU Nomenclature. Also, find the Rating Plug
order code in Appendix B: Rating Plug Nomenclature.
• Microsoft Windows™ 2000/XP/Vista/7 is installed and
running properly.
• Minimum of 20 mb of hard disk space.
• Minimum 256 mb of RAM (512 mb recommended)
• RS-232 and/or Ethernet communication port.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
General Information
Installation Procedure
WAVEFORM CAPTURE
Follow the procedure below to install the EntelliGuard
Setup software in to your system.
• Click on the Setup Icon
• The First Screen will be the welcome screen as shown
below. Opt [Next] to proceed further
•The Next will be the "License Agreement" screen. Opt
[Next] to proceed further.
•The Next screen will show the system path where the
setup is getting installed by default. One can change
the desired system path for the setup program by
clicking on [Browse].
•The system will perform installation in the specified
location after checking for appropriate requirements.
This may take 10 to 15 seconds. Once Installation is
completed user will be prompted with a screen that
has a [Finish] option.
Upon successful installation of the EntelliGuard you can
view the application in either of two places
• As an Application short cut Icon on the desktop
• In Start > Programs > EntelliGuard TU >
EntelliGuard Setup
One can use either of the above to start up the application
on which, the Main Screen of the EntelliGuard Setup will be
launched.
For further, detailed instructions on how to add a site and
add a device via serial communication or Ethernet
communication, check the help section on the software.
RATING PLUGS & THE UNIVERSAL RATING PLUG
The EntelliGuard TU trip system is composed of trip units
and trip unit rating plugs along with the sensors and wiring
provided in the circuit breaker to support the trip. Rating
plugs are used to lower the Long Time adjustment range of
the sensor provided in the circuit breaker.
The EntelliGuard TU trip rating plugs are unique in that they
can be used with multiple trip units and circuit breakers
within a specific sensor range, rather than only with a
single specific sensor. The trip rating plug catalog number
identifies the rating as well as the minimum and maximum
sensor rating the plug may be used with. Appendix B lists
trip-rating plugs available for each sensor and their part
numbers and the two-digit codes used within the trip rating
plug catalog numbers to identify sensor current ratings.
ANSI and UL circuit breaker types use a fixed rating plug
with a marked ampere rating. Trip units use the current
sensors installed in the breaker.
A total of eight cycles are captured:
• Four pre-trigger.
• Four post-trigger.
24 VDC external power is required for waveform capture.
When waveform capture is executed, the following
channels will be captured simultaneously: Phase A current,
Phase B Current, Phase C Current, Phase N Current, Phase
L1 voltage, Phase L2 voltage, Phase L3 voltage.
WFC captures 48 samples per cycle, per phase, at 50 hz
and 40 samples per cycle at 60 hz – the same data it used
for its protection algorithms. The GE Setup Software
contains full Waveform retrieval and viewer capability. GE
offers the software free via web download. There is a
function in the software that allows you to clear captured
waveforms. The GTU stores only one waveform record at a
time.
There are COMTRADE format viewers available to interpret
the file downloaded from the trip unit, but the GE Setup
Software is able to display the waveform graphically.
Viewing the waveform capture is described in the setup
software. Currently, the software must be in
communication with the trip unit prior to and during the
event in order for the event to be captured. After the
capture the software will show a file is available. The user
then uses the software to request the file, which is
extracted from the trip unit. At that point the file can be
saved off for external use, or it can be opened for viewing
in the program’s waveform viewer.
Harmonic content is calculated from the waveform data by
the Setup Software. There is no harmonic content
calculation performed by the trip unit – the data is
extracted from the data set by the GE Setup software.
1. While a waveform capture data (in COMMTRADE format) is
in memory, a new event will overwrite the capture data
in memory. Whether the waveform capture is disabled
or not, no other event is entertained. Unless and until
the waveform is read and cleared by master by issuing
appropriate commands, any read of waveform capture
data will return the same first waveform, even if other
events have occurred in between.
2. When the Modbus master is reading captured waveform
data and a valid Event (trigger) occurs (for which the
waveform could be captured): This new event is
ignored. Since the trip unit already has an event
captured and hence responding for the same event,
trip unit will ignore the latest event (trigger). The trip
unit will start capturing the new waveform only after
Master has read the complete waveform AND issued a
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
General Information
Event
Waveform Capture Setpoint
Manual trigger over
communications
ON, OFF
Inst)
Protective relays
ON, OFF
Current alarm 1
ON, OFF
Current alarm 2
ON, OFF
NOTICE
SOFTWARE REVISION 08.00.23 AND GREATER:
displayed on the LCD.
command to clear the waveform data in trip unit
memory.
Table 1-2: Trigger WaveForm Capture Events
Over current (GF, ST, LT,
Event Logging
The trip unit keeps a log of the last 10 events:
• Over current trips
• Protective relay trips
• Shunt trip (PBII and Global EntelliGuard G Trip Units Only)
• Under voltage Release trip (PBII and Global EntelliGuard
G Trip Units Only)
• BIM Trip Unit Mismatch - Breaker Interface Module
(EntelliGuard G only)
If a BIM read fails the trip unit will not open the breaker,
instead it will modify its internal configuration to match the
AIC rating of the least capable breaker in the family. The
trip unit will periodically read the BIM after that, and on a
successful match the original settings will be restored.
While the BIM error persists a BIM Err message will be
ON, OFF
The following information is stored with each event:
• RMS currents
• Phase
• Type of trip
• Trip counter
• Time and date stamps (Trips are logged under self
power without time stamp. Events with time stamps are
only logged when +24 VDC control power is available.)
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Protection
SECTION 2. PROTECTION
OVERCURRENT PROTECTION FUNCTIONS
The Trip Unit provides the following over current
protections:
response of a thermal magnetic circuit breaker. And
available i
4
t option adds 22 bands that simulate the
overcurrent response of fuses. The EntelliGuard circuit
breaker is able to use all 44 bands. Power Break I, Power
Break II, WavePro and AKR circuit breakers use the 19
lower thermal CB-type bands and the 22 fuse-type bands.
• Long Time (L)
Figure 2-2: Long Time Delay Settings
• Short Time (S)
• Instantaneous (I, H=high range)
• Reduced Energy Let Through Instantaneous (RELT)
• Ground Fault Internal Summation (G)
• Ground Fault CT External Summation (C, EntelliGuard G
only)
• Instantaneous Override (HSIOC)
• Making Current Release (MCR)
LONG TIME PROTECTION
Long Time Pickup
This setpoint establishes the breaker's nominal ampere
rating, xLT, as a fraction of the rating plug value, xIn:
xLT = LT multiplier x xIn
The adjustment range for long time pickup settings is 0.50
to 1.00 times xIn in steps of 0.05. The pickup value has a
10% tolerance. The band is drawn at 1/(1+10%) and 1/110%). The actual long time pickup is increased by 12% over
the nominal so that 100% nominal current may be carried
indefinitely. So a 1000 A setting is placed at 1120 A with the
minimum pickup drawn (left side of band) is 1088A, and the
maximum pickup (right side of band) is drawn at 1244A.
Figure 2-1 shows the Long Time pickup setting.
Figure 2-1: Long Time Pickup Settings
Thermal Long Time Overcurrent
2
The thermal I
T shape is similar to the typical curve of a
thermal magnetic circuit breaker and matches the shape
of many overcurrent devices used in industry today. The
typical shape and range of settings may be seen in Figure
2-2. The range of time delays is shown in Table 2-1 at
various multiples of nominal (100%) current setting. Drawn
bands also include a mechanical constant time to account
for circuit breaker operating and clearing time, which
causes the slight widening of the band evident at the lower
(right) end of the faster (lower) bands.
Long Time Delay
The trip unit provides up to 44 long time delay bands (only
on trip unit models starting with “J”). Not all circuit breakers
have all bands available. There are 22 bands using a
logarithmic type curve resembling the overcurrent
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Protection
X =
1.5
1.5 6 6
7.2
7.2
10
10
Commit
Clear
Commit
Clear
Commit
Clear
Commit
Clear
Min CB
4.25
8.04
0.20
0.33
0.14
0.24
0.072
0.137
C-2
12.7
24.1
0.60
0.94
0.42
0.66
0.21
0.35
C-3
25.5
48.1
1.21
1.84
0.83
1.28
0.43
0.67
C-4
34.0
64.1
1.61
2.45
1.11
1.70
0.57
0.89
C-5
51.0
96.2
2.41
3.66
1.67
2.53
0.86
1.32
C-6
67.9
128
3.21
4.87
2.22
3.37
1.15
1.75
C-7
84.9
160
4.02
6.08
2.78
4.20
1.43
2.18
C-8
102
192
4.82
7.29
3.33
5.03
1.72
2.61
C-9
119
224
5.62
8.49
3.89
5.87
2.01
3.03
C-10
136
256
6.43
9.70
4.44
6.70
2.29
3.46
C-11
153
289
7.23
10.9
5.00
7.54
2.58
3.89
C-12
170
321
8.04
12.1
5.56
8.37
2.87
4.32
C-13
204
385
9.64
14.5
6.67
10.0
3.44
5.18
C-14
238
449
11.2
17.0
7.78
11.7
4.01
6.04
C-15
272
513
12.9
19.4
8.89
13.4
4.59
6.90
C-16
306
577
14.5
21.8
10.0
15.0
5.16
7.76
C-17
340
641
16.1
24.2
11.1
16.7
5.73
8.61
C-18
374
705
17.7
26.6
12.2
18.4
6.30
9.47
Max CB
408
769
19.3
29.1
13.3
20.0
6.88
10.3
Thermal Memory
The Long Time and Short Time pick up algorithm also includes a cooling cycle that keeps track of current if it oscillates in
and out of pick up range. This Thermal Memory is also active in case the circuit breaker trips on Long Time or Short Time to
account for residual heating in conductors. If a circuit breaker is closed soon after a Long Time trip or Short Time trip, a
subsequent trip may happen faster than indicated by the time current curve due to the residual cable Thermal Memory
effect. In trips without control power, the Thermal Memory is powered from the trip battery. The cooling algorithm requires
up to 14 minutes to fully reset to zero.
Table 2-1 shows the nominal clearing and commit times for X multipliers of nominal pickup.
Table 2-1: Nominal Time Delays for Thermal Shaped Long Time Bands
• Algorithm will not commit below 1.5 cycles, clearing time will not be less than 0.088 seconds.
• Actual Long Time pickup is 112% of nominal pickup.
Fuse Shaped Steep Long Time Overcurrent
The optional steeper fuse characteristic is a straight line K=I
4
t shape for application in systems where fuses and circuit
breakers are used together. Twenty-two different time bands are available in each trip unit. Figure displays minimum and
maximum bands. Table 2-2 displays the nominal time delays for each of the 22 bands at various multiples of nominal
current pickup.
Drawn bands also include a constant time component, which accounts for the slight widening evident in the time current
curve at the lower (right) end of the faster (lower) time bands.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Protection
X =
1.5
1.5 6 6
7.2
7.2
10
10
Commit
Clear
Commit
Clear
Commit
Clear
Commit
Clear
Min F
0.67
1.54
0.025
0.085
0.025
0.085
0.025
0.085
F-2
2.0
4.40
0.025
0.085
0.025
0.085
0.025
0.085
F-3
3.6
7.98
0.025
0.085
0.025
0.085
0.025
0.085
F-4
5.6
12.5
0.025
0.085
0.025
0.085
0.025
0.085
F-5
8.1
18.0
0.032
0.100
0.025
0.085
0.025
0.085
F-6
11.2
25.0
0.044
0.13
0.025
0.085
0.025
0.085
F-7
15.1
33.8
0.059
0.16
0.028
0.094
0.025
0.085
F-8
20.0
44.7
0.078
0.20
0.038
0.114
0.025
0.085
F-9
26.1
58.4
0.102
0.26
0.049
0.14
0.025
0.085
F-10
33.8
75.4
0.13
0.32
0.064
0.17
0.025
0.085
F-11
43.3
96.8
0.17
0.41
0.082
0.21
0.025
0.085
F-12
55.3
123
0.22
0.51
0.104
0.26
0.028
0.092
F-13
70.2
157
0.27
0.64
0.13
0.33
0.036
0.109
F-14
88.9
198
0.35
0.81
0.17
0.40
0.045
0.13
F-15
112
251
0.44
1.01
0.21
0.50
0.057
0.16
F-16
141
316
0.55
1.26
0.27
0.62
0.072
0.19
F-17
178
397
0.69
1.58
0.34
0.78
0.090
0.23
F-18
224
499
0.87
1.98
0.42
0.97
0.113
0.28
Max-F
280
626
1.10
2.48
0.53
1.21
0.142
0.35
Table 2-2: Nominal Clearing Times for Fuse Shaped Long Time Bands
• Algorithm will not commit below 1.5 cycles, clearing time will not be less than 0.088 seconds.
• Actual Long Time pickup is 112% of nominal pickup.
SHORT TIME PROTECTION
Figure 2-3: Short Time Pickup Time Current Curve
Short Time Pickup
The Short Time Pickup function establishes the current at
which short time trip is activated. Short Time Pickup is with
a multiple of the Long Time Pickup and the choices of
pickup settings are from 1.5 to 12.0 times the Long Time
setting, xLT, in steps of 0.5 xLT.
The maximum pickup depends on breaker type and frame
as shown in Table 2-3, below:
The Short Time Pickup value tolerance band is
approximately -9% to +11% of the set point based on a
10% current sensing accuracy with the pickup calculated
with 1/ (1+Tolerance). The time current curve of short time
pickup is shown in Figure 2-3.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Protection
Time Band
60 Hz
ANSI, UL489
50 Hz
ANSI, UL489
1
0.025 sec
0.030 sec
2
0.033 sec
0.040 sec
3
0.042 sec
0.050 sec
4
0.058 sec
0.060 sec
5
0.092 sec
0.090 sec
6
0.117 sec
0.120 sec
7
0.158 sec
0.160 sec
8
0.183 sec
0.180 sec
9
0.217 sec
0.220 sec
10
0.350 sec
0.350 sec
11
0.417 sec
0.420 sec
12
0.517 sec
0.520 sec
13
0.617 sec
0.620 sec
14
0.717 sec
0.720 sec
15
0.817 sec
0.820 sec
16
0.917 sec
0.920 sec
17
0.933 sec
0.940 sec
Breaker
Available Settings
conversion kits
AKR and WavePro 5000A
frame
OFF, 1.5 to 7, steps of 0.5
and 2
EntelliGuard G Frame 3
OFF, 1.5 to 10, steps of 0.5
Band
Time Delay
Commit Time
EntelliGuard G
50 Hz
60 Hz
Clear
60 Hz
Clear
50 Hz
1
Min.
0.030
0.025
0.080
0.085
2
2nd
0.040
0.033
0.088
0.093 3 3rd
0.050
0.042
0.097
0.102 4 4th
0.060
0.058
0.113
0.118
5
5th
0.110
0.092
0.147
0.152
6
6th
0.130
0.117
0.172
0.177 7 7th
0.180
0.158
0.213
0.218 8 8th
0.210
0.183
0.238
0.243
9
9th
0.240
0.217
0.272
0.277
10
10th
0.280
0.350
0.405
0.410
11
Max.
0.340
0.417
0.472
0.477
Slope OFF
Slope = 3
Slope = 1
Table 2-3: Short Time Commit Times
Figure 2-4: Short Time Delay
Short Time Slope
Table 2-4: Short Time Settings by Breaker Type and
Frame
The slope setting modifies the initial portion of the ST delay
band in the familiar “hockey stick” configuration. A setting
Power Break I, Power
Break II, WavePro, AKR
OFF, 1.5 to 9, steps of 0.5
of OFF puts the constant time band in effect, with no slope.
Slope settings of 1, 2, or 3 put progressively higher slope
values in effect. If the fault exceeds the sloped section of
the curve, the constant time band setting takes effect.
EntelliGuard G Frame 1
OFF, 1.5 to 12, steps of 0.5
Short Time Delay
The Short Time Delay setting consists of both a slope
setting and a fixed delay band setting. The slope and delay
are independently selectable. The slope setting consists of
2
T slopes (minimum (1), intermediate (2) and
three I
maximum (3)) and fixed delay. The fixed delay bands
consist of 11 constant time bands. The width of the bands
varies by circuit breaker and with frequency. See Table 2-4.
On all ANSI and IEC breakers, the Short Time can be
disabled by setting the Short Time Delay to “OFF”. Note that
if Instantaneous is set to “OFF” Short Time cannot be
turned off.
Table 2-5: Short Time Delay Settings
Band Setting
Time
• Short Time slope is forced to OFF when optional LT Fuse (i4t) curves are
in use.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Protection
Frame
(A)
ANSI (X In)
UL (X In)
With ST
W/O ST
With ST
W/O ST
800
15
10
15
10
1,600
15
10
15
10
2,000
15
10
15
10
2,500
13
10
3,000
13
10
3,200
13
10
4000 9 9 9 9
5000 7 7
INSTANTANEOUS PROTECTION
Adjustable Selective Instantaneous over current protection
causes an undelayed breaker trip when the chosen current
level and proper waveform is reached.
The pickup value may be set in steps of 0.5 xIn from 2.0 xIn
to 15 xIn and steps of 1 xIn from 15 xIn to a maximum of
30 xIn. Greater than 15xIn is available only in trips provided
with the “Extended Range Instantaneous” option on ANSI
EntelliGuard G circuit breakers.
The maximum possible setting depends on the trip unit
instantaneous option provided, the circuit breaker’s
withstand capability and whether or not ST has been
enabled.
When Instantaneous pickup is set above 15X without ST on,
ST pickup is automatically switched on Default delay is
automatically switched on at a minimum delay setting,
unless otherwise set by the user. This is only applicable to
EntelliGuard G.
Table 2-6: Maximum Instantaneous for Power Break I,
Power Break II, WavePro and AKR Trip Units
or current limiting circuit breaker while interrupting in a
current limiting manner. This allows the trip setting to be
set much lower than optimally peak sensing trips and
hence sensitive to lower arcing fault currents that could be
causing an arc flash event.
Reduced Energy Let Through (RELT)
The EntelliGuard TU trip unit’s RELT capability provides the
ultimate in user flexibility for wiring and controlling an
alternate Instantaneous setting for temporary use to
reduce personnel hazard.
All versions of the EntelliGuard TU trip units are available
with Reduced Energy Let-Through (RELT) Instantaneous
protection. This optional feature allows the trip unit’s
Instantaneous Protection pickup threshold to be
temporarily set lower when personnel are in close
proximity to the circuit breaker. In the event of a fault, the
trip unit will respond sooner, minimizing damaging arc
flash energy. Once personnel are safely clear of the area,
RELT is disengaged, returning the system to its normal
Instantaneous settings. The RELT setting is independent of
the normal adjustable selective Instantaneous. Even if the
normal instantaneous is not enabled, by turning on RELT
the instantaneous will then be enabled.
The Instantaneous pickup accuracy is +10%. On certain
ANSI trip units with the user-selectable switchable
instantaneous over current an additional value of OFF
appears at the end of the listing of numerical values. Note
that if Short Time Delay is set to off, you will not be able to
also turn off Instantaneous.
When Instantaneous pickup is set above the maximum
allowed for the CB without ST on, ST pickup is automatically
switched on at a default delay is automatically switched on
at a minimum delay setting.
WaveForm Recognition vs. Peak Sensing
WFR is the standard algorithm used in the normal
instantaneous trip function for all CB versions except
Power Break I. The WFR algorithm is specially designed to
optimize selectivity while achieving fast instantaneous
tripping of the circuit breaker. The algorithm’s
measurements act as a proxy for measuring energy and
hence are able to discern a fault current from a peak-letthrough current allowed to flow by a current limiting fuse
The pickup value may be set in steps of 0.5 xIn from 1.5 xIn
to 15 xIn or the maximum allowed instantaneous pickup
for the particular circuit breaker type, rating and size. The
RELT Instantaneous pick up clears fault current in 50
milliseconds or less. The maximum setting depends on the
trip unit catalog number, breaker type and frame, and
whether or not ST is enabled. See Table 8.
Clearing times for the various instantaneous functions vary
by circuit breaker. The RELT function clearing time is 0.042
seconds for EntelliGuard G at 60Hz and 0.05 seconds at
50Hz. The adjustable selective instantaneous is 0.05 and
0.06 seconds at 60 and 50 Hertz respectively. For Power
Break II, AKR, and WavePro circuit breakers the clearing
times are 0.05 and 0.058 seconds for RELT and selective
instantaneous respectively at 60 Hz. Power Break does not
offer the selective Adjustable Instantaneous or RELT
function. Instantaneous clears in 0.05 seconds for Power
Break versions of the EntelliGuard TU trip unit.
When the RELT option is configured in an EntelliGuard TU
Trip Unit Digital Input 1 and Digital Output 1 are
automatically and permanently configured to function with
RELT. RELT is a factory installed option—it cannot be
“turned on” if it is not purchased as an option. The Digital
Output will be energized whenever RELT protection is
engaged. The Digital Input can be wired to one or more
external contacts, such as a light curtain, to engage RELT
when someone is within range of the equipment.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Protection
NOTICE
for reliable communication regarding RELT status.
Breaker
Frame Size
(A)
Instantaneous
Threshold with
Short Time (× IN)
Instantaneous
Threshold without
Short Time (× IN)
800
Off, 2 to 15
Off, 2 to 10
1600
Off, 2 to 15
Off, 2 to 10
2000
Off, 2 to 15
Off, 2 to 10
3200
Off, 2 to 13
Off, 2 to 10
4000
Off, 2 to 9
Off, 2 to 9
5000
Off, 2 to 7
Off, 2 to 7
NOTICE
RELT can also be controlled remotely over Modbus
Communications. RELT Status is also provided via Modbus
register. Separate Modbus commands are required to
engage and disengage RELT.
Whenever RELT is engaged the trip unit’s LCD display will
flash an obvious “RELT ON” warning.
Once engaged, all trigger sources (remote via Modbus and
externally wired digital input) must be cleared before RELT
will disengage. RELT will stay engaged for 15 seconds after
the last trigger is cleared to give personnel time to clear the
area.
Due to Lock-Out-Tag-Out (LOTO), RELT cannot be turned on
Fault CT are desired, order both from the factory because
after delivery these options cannot be changed.
Ground Fault Summation
This protection element operates continuously on the four
current sensor inputs to the trip unit. On four pole breakers,
the fourth pole is built into the circuit breaker. On 3 pole
th
breakers the 4
pole is connected to a neutral sensor
typically mounted in the cable section via the secondary
disconnect. In applications that do not require a neutral
th
sensor, this 4
pole connection must be shorted at the
secondary disconnect to avoid nuisance tripping due to
extraneous noise pickup.
or off from the trip unit LCD.
RELT capability may be provided on a trip unit with or
without 24VDC control power.
When 24 VDC/AC is provided to the RELT input (input 1), the
trip unit will use the set RELT Instantaneous trip setting.
Without control power connected to the trip unit
permanently, indication that the trip unit is in the RELT
mode may not appear on the main screen. The trip unit
must be permanently connected to 24VDC control power
A RELT Switch Kit (catalog #GTURSK) can also be purchased
to add a RELT switch to existing breakers. The kit includes
the selector switch, LED bulb, NO/NC contacts, 8 feet of
wire with spade connectors. The LED Bulb burden is 0.84
watts and the color of the switch is blue.
Table 2-7: Instantaneous Thresholds for Power Break I,
Power Break II, WavePro and AKR Trip Units
POWERBREAK, AK, AKR, WAVEPRO AND CONVERSION
KITS:
Ground Fault Sum is used for single source and multiple
source Ground Fault schemes.
ENTELLIGUARD G
GF Sum is used for single source ground fault only. For
multiple source ground fault see “Ground Fault CT,”
below.
Ground Fault CT
This protection element is available only on the
EntelliGuard G. It is typically utilized for multi-source
Ground Fault (MSGF) applications in ANSI/UL applications
where sensor data must be shared among multiple trip
units on systems with multiple sources connected in
parallel. Contact your local sales office or the Burlington
factory for details on GE’s recommended MSGF
implementation. When GF CT is specified in a breaker, a
special “interposing CT” is installed in the breaker that is
wired between the breaker’s secondary disconnect and the
trip unit’s CT inputs. The full scale output of this CT is
1.54mA at 100% of external sensor.
• RELT instantaneous allows the minimum threshold to go to 1.5X.
GROUND FAULT PROTECTION
The Trip Unit provides two types of ground fault protection:
Ground Fault Summation and Ground Fault CT. These
protections are independent. A related GF alarm function is
available for both types of GF protection, and share the
same pickup level, band choices and tolerances as the GF
trip functions. If both Ground Fault Summation and Ground
The GF pickup value tolerance band is 15% of the set point.
The ground fault pickup settings are listed in Table 2-8 as
multiples of xCT the current sensor rating, in steps of 0.01
xCT. The maximum GF pickup value is limited to 1200 A per
UL standard.
Multiple Ground fault curves are also available: Definite
2
t slope, l4t and a double break special selective
time, l
ground fault with dual l
2
t slopes. The pickup in all is drawn
with a 10% tolerance and the bands are drawn with a 15%
current tolerance. In the case of the double break selective
ground fault the first slope is 10% tolerance, the second is
15%. See DES-093A for ground fault curve shapes.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Protection
0.20–0.60 (max of 1200
A) (increment of 0.01)
with OFF as a selection
when GF or GF Alarm
0.01) with OFF as a
selection when GF or GF
Alarm Switchable is
GF/ALARM
Pickup
4000 0.20–0.30 (increment of
0.01 with OFF as a
selection when GF or GF
Alarm Switchable is
GF/ALARM
Pickup
5000 0.20–0.24 (increment of
0.01) with OFF as a
selection when GF or GF
Alarm Switchable is
GF/ALARM
Pickup
6000 0.2 (1200 A) with OFF as
a selection when GF or
GF Alarm Switchable is
Ground-Fault Delay
This function sets the delay before the breaker trips when
the ground-fault pickup current has been detected.
The Ground Fault Delay setting consists of a selection
between two I
2
T slopes: an optional steeper fuse slope, and
fixed delay only. One of fourteen fixed time bands is also
selected. The fixed delay bands are listed in Table 2-9.
The Ground Fault Delay settings consist of two user
settings. The Time Delay band and the Ground Fault
protective function curve shape. The time delay bands
consist of up to 14 definite time response bands. Table 2-8
lists the available time delay bands for the various circuit
breakers. There are four ground fault protective functions
shapes that may be selected. Definite time (OFF), l
4
t slope and a double break special selective ground fault
l
with dual l
2
t slopes.
2
t slope,
The Ground Fault Delay band may be set to off based on
trip unit configuration. Note that “switchable Ground Fault”
is not UL listed.
• Power Break I, Power Break II, WavePro and AKR time band width is 60
msec.
• EntelliGuard G 60 Hz time band width is 0.055 sec.
• EntelliGuard G 50 Hz time band width is 0.060 sec.
ALARMS
Ground Fault Alarms
The Ground Fault alarm DOES NOT issue a trip event. If
tripping on ground fault is required order LSI
not LSIGA.
Instead it can turn on a digital output if an output is
configured for it. It will always turn on an indication in the
Modbus register map. The output can be used to turn on a
light or other signal but it WILL NOT GENERATE A TRIP
EVENT.
All GTUs with a Ground Fault trip can also send a signal
after the trip event that a GF occurred.
Current Alarm
The trip unit provides two current alarms. These alarms will
trigger an alert when current consumption exceeds their
setpoints. This is useful for implementing load shedding
processes, and serves as an alert to impending Long Time
pickup. The alert can be signaled either via
communications or via digital output. The Current Alarms’
ON/OFF pickup settings are 0.5 to 1.0 xIn in steps of 0.05.
The trip unit does not allow the current alarm OFF setpoint
to be set above the ON setpoint.
If the highest measured phase current goes above the
Current Alarm ON setpoint and remains above the setpoint
for more than 60 seconds the alarm will be triggered. If the
current falls below the Current Alarm OFF setpoint for more
than 60 seconds while the Current Alarm is active, the
alarm condition will be cleared.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Protection
Unrestrained, normal mode ST setpoints: If
Restrained settings:
The serial register indicating the state of the Current Alarm
will assume a value 1 when the alarm is triggered, and a
value of zero if the alarm is cleared. If a digital output is
mapped to the Current Alarm, it will be open if the alarm is
clear, and closed if the Current Alarm is active. The alarm
indications do not latch; they follow the state of the Current
alarm.
enters pickup, the normal or unrestrained GF pickup
setpoints will be effect.
If the Zone Selective Input goes off while the restrained
settings are in effect, they will remain in effect for 50
milliseconds. After that, the unrestrained settings will go
into effect.
ZONE SELECTIVE INTERLOCKING
Zone -selective interlocking coordinates breakers so that
the downstream breaker is allowed the first opportunity to
clear a fault or overload event.
The optional Zone Selective Interlocking (ZSI) function
operates with a group of series-connected breakers. ZSI is
achieved with the use of the TIM1 module or an equivalent
GE qualified and recommended device.
There are two sets of settings in a breaker used in a Zone
Selective Interlocking system. The normal or “unrestrained”
setpoints are the main over current protection setpoints. A
second set of ZSI or “restrained” setpoints are included for
each interlocked protection element – GF, ST, and
Instantaneous.
If a protection element, such as Ground Fault, goes into
pickup and the Zone Selective Interlock input is active, the
“restrained” or ZSI settings will be in effect. If the Zone
Selective Interlock input is not active when the GF element
the trip unit enters Short Time pickup and the
ZSI input is OFF, these settings are in effect. In
a ZSI configuration these settings are
optimized for protection of the cable/bus
directly below the breaker, and not for
selectivity with downstream breakers.
If the trip unit enters
Short Time Pickup and the ZSI input is ON,
these settings are in effect. This setting is
intended to provide selectivity with the
downstream breaker, so it will typically be set
longer, to give the downstream breaker a
chance to clear the fault.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Protection
In Power Break II and Spectra MicroEntelliGuard Circuit
Breakers the "T" option only enables instantaneous ZSI
as an output to interlock with upstream circuit breakers
such as a GE WavePro, AK, AKR, Conversion Kits or new
EntelliGuard G (ANSI or UL489). The T option requires 24
VDC external power. The T option does not modify IOC
timing on PowerBreak I, PowerBreak II and Spectra
MicroEntelliGuard circuit breakers.
Figure 2-5: Restrained ZSI Settings
ZSI Option
Two Zone- Selective-Interlocking options may be
purchased with each trip. Option "Z" or option "T". Option Z
allows the user access to short time or ground fault ZSI.
The user may enable or disable either or both. The "T"
option adds Instantaneous ZSI capability. Instantaneous
ZSI may be enabled or disabled by the user at any time.
Use of the short time or GF ZSI in a CB requires that the
user set two different delay and slope bands for ground
fault or short time depending on which he has enabled.
The upstream breaker uses the ST ZSI and/or GF ZSI delay
bands and slope, and/or transition to a delay
Instantaneous if it receives a downstream ZSI signal.
The desired ZSI (ST and/or GF and/or Instantaneous) must
be selected in order for the downstream breaker to issue a
ZSI signal, and the upstream breaker to act upon this
signal. If the ZSI setting is set to OFF no ZSI output signal is
generated.
The ST ZSI Delay Bands are independent and have the
same bands available. Slope settings may also be
interlocked.
The GF ZSI Delay Bands are independent and have the
same bands available. Slope settings may also be
interlocked.
15
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Protection
EntelliGuard G (ANSI and UL489):
AKR, WavePro and Conversion Kits:
NOTICE
SOFTWARE REVISION 08.00.23 AND GREATER:
displayed on the LCD.
If the GTU’s internally stored BIM ID (Breaker Serial
Number) is ZERO:
Instantaneous ZSI is either enabled or disabled. There are
no settings to modify the action of Inst ZSI.
the traditional mechanical rejection methodology used on
other GE circuit breakers.
INST ZSI timing is as follows::
•
An additional 2.5
cycles (ignore inst for 3 cycles after seeing input and trip
th
on the 7
•
cycles (ignore inst for 4.5 cycles after seeing input and
trip on the 9
half cycle)
th
half cycle.)
An additional 4
INTERRUPTION PROTECTION
Making Current Release (MCR)
Every EntelliGuard G circuit breaker uses a making current
release. The making current release varies per circuit
breaker Envelope and is related to the circuit breaker’s
close and latch rating.
The MCR pickup is activated at the time the circuit breaker
closes and for six cycles thereafter. When the six cycles are
over, the threshold changes to the HSIOC pickup setting.
High Set Instantaneous Protection (HSIOC)
HSIOC is also known as Override Pickup. Some of the trip
units on EntelliGuard G circuit breakers may be provided
with an override instantaneous trip.
Whether such a trip is provided or not depends on the
circuit breaker within which the trip is installed. If the circuit
breaker’s withstand lcw is equal to the short circuit rating
then the trip will not have an override pickup. If the
withstand rating is lower than the short circuit rating then
the trip will enable override protection of the circuit breaker
at the short time withstand rating level.
In UL 489 circuit breakers the HSIOC setting is nominally at
107% of the Icw for the circuit breaker. Taking tolerance
into account, the override’s minimum trip is at 100% of the
circuit breaker’s Icw.
In UL 1066 (ANSI) circuit breakers the HSIOC setting is also
at 107% Icw if the adjustable selective instantaneous is ON.
If the adjustable selective instantaneous is OFF then the
HSIOC nominal pick up is at 98% of the circuit breaker’s Icw
and, considering tolerance, the minimum pickup is at 91%
of the circuit breaker’s Icw.
The BIM contains information that describes the breaker
configuration to the trip unit. The trip unit extracts
information on Sensor Rating, Interruption Rating, and pole
configuration from the BIM. This is a one-time event that
occurs when a new trip unit is first powered up in a
breaker. Every time the trip unit powers up in the breaker
from that point forward, it compares information in the BIM
to the information it initially read and stored. If the
information does not match the trip unit will immediately
trip the breaker and set a BIM Error Flag, and record a BIM
error trip event. In effect, the trip unit “marries” the breaker.
If a BIM read fails the trip unit will not open the breaker,
instead it will modify its internal configuration to match the
AIC rating of the least capable breaker in the family. The
trip unit will periodically read the BIM after that, and on a
successful match the original settings will be restored.
While the BIM error persists a BIM Err message will be
The “Universal Trip Unit” can be used as a replacement for
any trip unit. The Protection and Advanced Features of the
Universal trip unit should match the configuration of the
trip unit being replaced to maintain the same functionality.
The Universal trip unit is programmed with minimum
values for all protection, and it will automatically read the
BIM values from the first breaker it is installed in. This will
force the Universal Trip Unit to assume the configuration of
the trip unit it is replacing. Once this process is complete,
the Universal Trip Unit cannot be moved to another
breaker – it “marries” the breaker.
BIM Transaction Details
On power up the trip unit immediately queries the BIM for
local breaker configuration information.
• Upon power-up the trip unit reads BIM ID
• Since there is no match:
Power Break I, WavePro and AKR circuit breakers do not
employ an override function. Power Break II circuit
breakers use a mechanical override function.
Breaker Interface Module (BIM)
The EntelliGuard G Breaker uses a Breaker Interface
Module which is internally connected to the EntelliGuard G
Trip Unit. This allows the breaker to electronically reject an
incorrect trip unit being inserted into a breaker, instead of
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Protection
If the GTU BIM ID (Breaker Serial Number) is NON-ZERO
BIM Remarry Sequence:
Item
Option
Voltage unbalance
pickup
Adjustable from 10% to 50%
in increments of 1%.
disables this function.
Item
Option
pickup
in increments of 1%.
disables this function.
Item
Option
pickup
increments of 1%.
Under voltage
Adjustable from 1 sec to 15 sec in
Voltage Unbalance
• Upon power-up the trip unit reads BIM ID
• If there is no match:
o Breaker trips Note: Software Revision 08.00.23
and great, If a BIM read fails the trip unit will not
trip the breaker, instead it will modify its internal
configuration to match the AIC rating of the least
capable breaker in the family. The trip unit will
periodically read the BIM after that, and on a
successful match the original settings will be
restored. While the BIM error persists a BIM Err
message will be displayed on the LCD.
o GTU shows BIM ID Mismatch Error
o GTU registers a BIM Trip Event
Under certain circumstances, it is possible to reconfigure a
trip unit so that it can be installed in a different circuit
breaker. This involves “divorcing” the BIM and trip unit so
that the trip unit can be “married” to a different circuit
breaker.
1. Install the trip unit on the target breaker. On power up
the breaker will be tripped due to BIM error.
2. BIM mismatch will be indicated.
3. Press Right + Left + Up simultaneously.
4. “BIM OK” will flash in the upper left corner of the LCD
display if marry succeeded
5. “BIM ERROR” will show if the marry failed.
Upon execution of the procedure, GTU will upload the data
if the breaker is open and the following data in the BIM
matches the GTU data programmed in the factory:
This function compares the highest or lowest phase
voltage with the average of all three phases and initiates a
trip if the difference exceeds the set point.
Table 2-10: Voltage Unbalance Settings
Voltage unbalance
delay setting
Current Unbalance
This function compares the current in the highest or lowest
phase with the average of all three phases and initiates a
trip if the difference exceeds the set point.
Table 2-11: Current Unbalance Settings
Current unbalance
Current unbalance
delay setting
Undervoltage Relay
This function measures the voltage in all phases and
initiates a trip if any phase voltage drops below the set
point. This internal trip unit relay feature operates
independently of any separately installed undervoltage
Relay Accessory on the circuit breaker.
Table 2-12: Under Voltage Settings
Adjustable from 1 sec to
15 sec in increments of 1 sec.
Setting this value to OFF
Adjustable from 10% to 50%
Adjustable from 1 sec to
15 sec in increments of 1 sec.
Setting this value to OFF
• Sensor
• Standard (UL/ANSI/IEC)
• MCR
• HSIOC
• Breaker interruption rating (Frame)
If there is no match, BIM Data mismatch error will show.
Otherwise, continue normal operation.
PROTECTIVE RELAYS
The protection relay can be set to cause either a trip or an
alarm. If the PR Enable on the LCD is set to ON, a trip will be
generated, if set to OFF an alarm will be generated. The
alarms can provide external indication by using the digital
output contacts. See “Output Relays,” below, about output
contact behavior.
“Trip on Zero Volts” is a setpoint that defines the operation
of the UVR relay on a “dead bus”. It determines whether the
protective relay UVR trip unit function trips or not when all
three phase voltages drop to zero.
Overvoltage Relay
This function measures the voltage in all phases and
initiates a trip if any phase voltage exceeds the setpoint.
See Table 2-13.
Adjustable from 50% to 90% in
increments of 1 sec. Setting this value
to OFF disables this function.
17
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Protection
Item
Option
pickup
increments of 1%.
to OFF disables this function.
Item
Option
pickup
increments of 10 kW.
to zero (0) will disable this function.
Table 2-13: Over Voltage Settings
Power Direction Setup
Over voltage
Over voltage
delay
Power Reversal Relay
Adjustable from 110% to 150% in
Adjustable from 1 sec to 15 sec in
increments of 1 sec. Setting this value
This function selects the normal power flow direction for
the breaker. Set this parameter to match the direction of
current flow through the breaker during normal operating
conditions. This direction setup also affects the sign of the
normal power metering displays.
Potential Transformer Voltage
This function measures the direction of power flow through
the breaker and initiates a trip if a sufficient magnitude of
reverse power is detected.
Table 2-14: Power Reversal Settings
Power reversal
Adjustable from 10 kW to 990 kW in
Enter the primary voltage rating of the potential
transformer. The range of values is 120 V to 600 V, with an
increment of 1V. The voltage input coming into the trip unit
must be wired into using voltage conditioners which steps
the voltage down to an acceptable voltage level. See below
for voltage conditioner plate wiring diagrams.
Power reversal
delay
Adjustable from 1 sec to 15 sec in
increments of 1 sec. Setting this value
Figure 2-6: Voltage Conditioner Plate Wiring — Wye
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Protection
NOTICE
voltage and power metering values.
30 VDC/25 VAC max, 1 A.
Figure 2-7: Voltage Conditioner Plate Wiring — Delta
An incorrect PT voltage set point will result in incorrect
Potential Transformer Connection
Select the appropriate potential transformer connection,
either line-to-line (Ph-Ph) or line-to-neutral (Ph-N). See “PT
Connection,” below, for more details.
OUTPUT RELAYS
The number of outputs available varies by breaker. These
are relay contact outputs to the secondary disconnect.
Each output can be configured per Table 2-15.
The contacts are rated for
Power Break I, Power Break II, WavePro, AK, AKR and
Conversion Kit Trip Units have one output relay.
EntelliGuard G Trip Units have two output relays. The relay
output can be assigned to the following functions:
• Group 1 – GF Sum and GF CT alarm only. Does not latch.
The trip units must have the specific option (as an example
protective relay must be enabled in order for protective
function to actuate the relay) enabled in order to actuate
the relay.
Fan/Command Close Control
EntelliGuard trip units include an output dedicated to
controlling either an external breaker cooling fan (5000A
WavePro and AKR breakers only) or a remote close
accessory (EntelliGuard G breakers only). Breaker
documentation provides wiring information.
For WavePro and AKR breakers, the trip unit automatically
calculates cooling requirements and activates the fan
control output to maintain the breaker’s operating
temperature.
For EntelliGuard G breakers, the remote close command is
available via Modbus command. Issuing command 111 will
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Protection
Group #
Function
Summary Description
1
activated.
2
INST, LT, ST)
7
Reduced
(RELT)
Output relay contact closes when
3
relays
relay contact closes.
4
Current
Exceeding current alarm pick-up
5
alarm 2
turns closes the relay contact.
set via communication).
operate the command close coil accessory on the circuit
breaker (remotely closes the breaker).
Table 2-15: Output Configuration
• UVR, Protective Relay
• Over Current, Protective Relay
• Shunt Trip, UVR, Over Current
GF alarm Turns on when GF alarm is
Overcurrent
trip (GF,
Energy LetThrough
Protective
alarm 1
Current
*Health
6
status
BELL ALARM ACCESSORY
Bell Alarm with Lock-out Accessory Configuration Setup
(applies to Power Break II and WavePro Trip Units only)
This defines the types of signals (protection trip, Shunt trip,
Shunt Trip with Lockout, or Under Voltage Release trip) that
activates the Bell Alarm-Alarm Only and Bell Alarm with
Lockout accessories on the Power Break II breaker only.
The customer may enable or disable a different path to
activate these accessories from the different types of trip
signals.
The following settings can be set on the LCD or through
communication for PBII and WavePro breakers:
• Disabled
• Shunt Trip
• UVR Trip
• Over Current Trip
Over-voltage trip turns ON the
relay.
the RELT pickup is enabled.
When protective relay trips the
turns closes the relay contact.
Exceeding current alarm pick-up
Relay contact will be closed or
opened depending on the Health
contact setting. (Either normally
open (NO) or normally closed (NC)
• Shunt, UVR, Protective Relay
• Shunt, Over Current, Protective Relay
• UVR, Over Current, Protective Relay
• Shunt, UVR, Over Current, Protective Relay
Settings Description
The following are descriptions of the effects of each
accessory switch when it is enabled:
• If Bell Alarm or Bell Alarm with Lockout is set to Shunt
Trip, an opening generated by a Shunt Trip will cause
the Bell Alarm contacts to change state.
• If Bell Alarm with Lock-out is set to over current trip, a
fault generated by LT, ST, GF, and/or Instantaneous will
cause the Bell Alarm contacts to change state.
Bell Alarm Operation – EntelliGuard G breakers
The EntelliGuard G breaker has a mechanical lockout built
into the breaker’s trip mechanism. The lockout actuator is
always triggered when the flux shifter actuator “trips” the
circuit breaker. The breaker’s mechanical lockout is not
actuated if the breaker is “opened” using the front panel
pushbuttons, or an optional shunt trip accessory.
There are two modes of operation for the Lockout button in
UL & ANSI applications – MANUAL and AUTOMATIC. The trip
unit’s Lockout button configuration is fixed based on the
catalog number of the trip unit. MANUAL or AUTO operation
is fixed at the factory, and cannot be changed. Do not
attempt to rotate the knob as it will damage the locking
mechanism.
In MANUAL mode the breaker’s lockout actuator is allowed
to travel to its “triggered” position. As the lockout trigger
extends from the breaker mechanism following a flux
shifter operation, it pushes the knob on the front of the trip
unit out. At this point the breaker mechanism is “locked
out” and cannot be closed until the mechanical lockout is
manually reset. Reset is accomplished by pushing in the
button on the trip unit until the breaker lockout is reset.
In AUTOMATIC mode the breaker’s mechanical lockout
actuator is physically restrained from traveling to its
“triggered” position by the fixed knob on the trip unit. In
other words, the mechanical lockout is fired when the flux
shifter operates, but the trip unit’s knob “automatically
resets” the lockout so that the breaker can be reclosed
without manual intervention.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Protection
Input
Input 1
Assignment
Summary Description
OFF
No action taken.
RESET
Resets Latched Output Relays
as input 1 is active.
TRIP
Causes the breaker to trip.
2
OFF
No action taken.
as input 2 is active.
TRIP
Causes a breaker to trip.
NOTICE
bounce being interpreted as multiple input commands.
There is an option bell alarm contact accessory that
provides a signal whenever the breaker’s mechanical
lockout operates. In MANUAL mode this contact will remain
closed as long as the lockout reset button is extended. In
AUTO mode this contact will close briefly when a trip
occurs, but does not latch. The dwell time of the contact in
AUTO mode is on the order of a few milliseconds – typically
not enough to be useful for control purposes.
DIGITAL INPUT RELAYS
Table 2-16: Digital Input Assignments
1
RELT Causes unit to use the RELT
protection setpoints as long
Inputs can be assigned to three main functionalities:
• Reduced Energy Let-Through (RELT)
• Trip the breaker
• Remotely reset latched relays
Table 2-16 shows the possible assignments for the inputs.
Input 1:
• If the trip unit is equipped with the Reduced Energy Let
Through (RELT) protection feature, this input is
automatically and permanently assigned to engage
RELT settings when the input is activated.
• If RELT is not available on the trip unit, Input 1 can be
set to OFF (no action), Trip the Breaker, or Reset latched
output relays.
Input 2: (EntelliGuard G only)
• RELT, RESET, TRIP, and OFF.
RESET Resets Latched Output Relays
RELT Causes unit to use the RELT
protection setpoints as long
High fidelity external contacts are recommended for
use with inputs to reduce the likelihood of contact
In addition to the Digital Inputs indicated above, Power
Break I, Power Break II, WavePro, AKR, and EntelliGuard G
Trip Units also receive inputs from external voltage
conditioners, a +24 VDC control power supply, and
communication connections. (External +24 VDC control
power is required for communication.)
All trip unit types have a connection to an auxiliary switch
within the breaker that senses the breaker’s contact
position (OPEN or CLOSED). This status indication requires
+24 VDC.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Setting up the Trip Unit
SECTION 3. SETTING UP THE TRIP UNIT
NOTICE
Long Time Pickup
What this shows:
Long Time Band
I2t
I4t
What this shows:
Tip:
Short Time Pickup
What this shows:
Short Time Band
See DES-095 for i2t and DES-096 for i4t trip time curve
information for EntelliGuard G. See DES-095 and DES-096
SETUP NAVIGATION
Use the LEFT and RIGHT arrows to
navigate from screen to screen
and to specific items — Pickup,
Band, etc.
for Wavepro, AKR, and Power Break applications.
2
t band is adjustable from C MIN to a maximum that
The I
varies by circuit breaker application.
4
The I
t band (
when installed
) is adjustable from F MIN to F
MAX.
Use the UP and DOWN arrows to
adjust setpoint item values. For
example, pickup ranges from 0.50
to 1.00.
The I4t and I2t selections are both included in the Band
2
setpoint – continue scrolling past the min or max I
values to reach the I
4
t (fuse) band setpoints.
t setting
The C4 i2t delay band is currently selected.
Until you hit the middle ENTER key the
setting will not save.
You can navigate completely through the entire range
of settings using just the UP or DOWN arrow.
SHORT TIME PICKUP
If you try to ENTER and it says LOCKED, you must enter the
password. See “Password Setup“ in SECTION 3 for more
information.
LONG TIME PICKUP
defines the
threshold where the LT element
begins to “timeout” toward tripping as
a percentage of the Rating Plug
current (In). The actual pickup
threshold, in amperes, is indicated at
the bottom of the screen
The LT pickup adjustment range is
between 50% (0.50) and 100% (1.0) of
the rating plug.
The Pickup setpoint is highlighted and set to 50%. This is a
1600A breaker, since the indicated pickup threshold is
800A (50% of 1600A = 800A)
LONG TIME DELAY
selects the “delay
band” for the LT element, or how long
the trip unit will allow an overload to
persist before the breaker is
commanded to open.
The GTU has two LT band options:
•
– the standard set of delay
bands, included in every GTU.
•
– also called “fuse bands” – are
now also standard (on trip unit models
starting with “J”).
defines the
threshold where the ST element
begins to “timeout” toward tripping,
as a multiple of the Long Time Pickup
threshold.
If Long Time Pickup is set to 800A, and
Short Time Pickup is set to 2.5, ST will
go into pickup when the current
exceeds 2000A.
Short Time is an optional element. If
ST is not installed in your trip unit, this
screen will not appear.
The ST pickup adjustment range is between 1.5 and a
maximum that is breaker dependent. Check DES-092 and
DES-097 as well as “Short Time Protection,” above, for
pickup threshold limits.
The Pickup setpoint is highlighted and set to 2.5 x the LT
pickup value.
SHORT TIME DELAY
selects the “delay band” for the ST
element, or how long the trip unit will
allow an overload to persist before the
breaker is commanded to open.
See DES-092 and DES-097 for delay
band information.
The band is adjustable from 1.5 to a
maximum that varies by circuit
breaker application.
If the switchable option is available, ST
can be disabled by selecting OFF as
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Setting up the Trip Unit
NOTICE
the trip unit, these are the settings that are in effect.
What this shows:
Short Time
Short Time Slope
OFF
1 – 3
What this shows:
Instantaneous Pickup
What this shows:
Slope OFF
Slope = 3
Slope = 1
the ST Band setting. OFF is found between the minimum
and maximum delay band setting positions.
If ST is turned off (Disabled) you cannot also disable IOC. If
IOC is disabled, you cannot turn off ST.
When ZSI is ON this becomes the PROTECTIVE,
UNRESTRAINED SETTING, not the selective setting and
the ZSI setting becomes the SELECTIVE, RESTRAINED
SETTING. In other words, when there is no ZSI input to
The ST delay is set to Band 4.
SHORT TIME SLOPE
The
electrical system from higher level
overloads.
of the “delay band” for the ST element.
See DES-092 and DES-097 for trip
time curve information.
The Slope setpoint has three available values:
•
– constant-time delay band
•
– Increasing slope values, with 1 being the lowest,
3 the highest.
The ST Slope is set to OFF (Constant Time).
If an i4t (fuse) LT delay band is in use, the ST slope is fixed to
OFF.
element protects the
modifies the shape
INSTANTANEOUS PICKUP
unit, this screen will not appear.
INST pickup range is from 2.0 to a maximum value that is
breaker dependent. See DES-094 for EntelliGuard G, DES099 for Power Break, and DES-100 for Power Break II.
EntelliGuard G circuit breakers offer an optional “High
Range IOC” that extends the IOC pickup as high as 30 x the
Rating Plug current (frame limited).
Figure 3-1: Short Time Slope
threshold where the INST element
begins to “timeout” toward tripping,
as a multiple of the Rating Plug
current (In).
If a 1600A Rating plug is installed, and
INST Pickup is set to 10.0, INST will go
into pickup when the current exceeds
16000A.
Instantaneous is an optional element.
If INST/IOC is not installed in your trip
Certain trip unit options allow INST to be turned off. This is
accomplished by selecting OFF as the Pickup threshold.
OFF is found between the minimum and maximum pickup
location if it the option is installed.
The INST Pickup setpoint is highlighted and set to 10.0 x the
Rating Plug current.
23
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Setting up the Trip Unit
Reduced Energy Let-Thru (RELT)
RELT Pickup
What this shows:
Ground Fault Sum
Ground Fault Sum Pickup
What this shows:
Ground Fault Sum Band
NOTICE
When ZSI is ON this becomes the PROTECTIVE,
these GF settings are in effect.
Ground Fault Slope
OFF
RELT INSTANTANEOUS PICKUP
The
element is a second Instantaneous
protection element that can be put
into force when the trip unit receives
an external input such as from a light
curtain or switch contact.
where the RELT INST element begins
to “timeout” toward tripping, as a
multiple of the Rating Plug current.
RELT is an optional element. If it is not
installed on your trip unit, this screen will not appear.
RELT is adjustable between 1.5 and a breaker framedependent maximum, similar to the INST element.
RELT cannot be disabled via the Pickup Setpoint.
When RELT is provided in the trip unit, Digital Output 1 is
automatically and permanently assigned to indicate
whether RELT is engaged or not. Digital Input 1 is
automatically and permanently assigned as a means to
engage RELT with an external contact. RELT can also be
put into effect via serial communications command. Please
refer to the section on Digital Input/Output configuration or
Modbus for details on how to setup RELT.
defines the threshold
Use DES-093 for EntelliGuard G GF curve characteristics
and DES-098A for Power Break, AKR, and Wavepro GF
curve characteristics.
The Pickup setpoint is highlighted and set to 0.2x the
breaker’s installed sensor rating.
GROUND FAULT SUM DELAY
“delay band” for the GF element, or
how long the trip unit will allow an
overload to persist before the breaker
is commanded to open.
See DES-093 for trip time curve
information on EntelliGuard G.
See DES-098A for trip time curve
information on Power Break, AKR, and
Wavepro.
Ground Fault Trip protection delay
band can be set between 1 and 14.
Optional configurations will allow for GF to be turned off by
setting the delay band to OFF. This value is found between
the minimum and maximum band selections for the trip
unit.
selects the
The Pickup setpoint is highlighted and set to 1.5 x the
Rating Plug current.
GROUND FAULT SUM PICKUP
The
protects the electrical system against
unintentional connections to earth
ground.
threshold where the GF Sum element
begins to “timeout” toward tripping,
as fraction of the breaker sensor
value.
GF Summation always uses four
current sensor inputs (Phase A, B, C,
and N) to calculate a phasor sum
when determining pickup.
Ground Fault Summation is an optional element. If GF Sum
is not installed in your trip unit, this screen will not appear.
For ANSI and UL breakers the GF Sum pickup adjustment
range is between 0.2 and 0.6. Both the minimum and
maximum are breaker and application dependent.
element
defines the
UNRESTRAINED SETTING, not the selective setting and
the ZSI setting becomes the SELECTIVE, RESTRAINED
SETTING. In other words, when there is no ZSI input,
GROUND FAULT SUM SLOPE
•
– definite-time delay
• 1 – l2t
• 2 – l4t
shape of the “delay band” for the GF
element.
See DES-093 for trip time curve
information on EntelliGuard G (shown
below).
See DES-098A for trip time curve
information on Power Break, AKR, and
Wavepro.
See DES-093 for trip time curve
information on EntelliGuard G.
Ground Fault Trip protection delay
band can be set between 1 and 14.
Optional configurations will allow for
GF to be turned off by setting the
delay band to OFF. This value is found between the
minimum and maximum band selections for the trip unit.
GF CT is available only on EntelliGuard G circuit breakers.
25
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Setting up the Trip Unit
Ground Fault CT Slope
OFF
1 – 3
What this shows:
Ground Fault Sum Alarm Setup Screen.
Ground Fault CT Alarm Setup Screen.
Zone Selective
Interlocking (ZSI)
Zone Selective Interlocking
GROUND FAULT CT SLOPE
GROUND FAULT CT ALARM
shape of the “delay band” for the GF
element.
See DES-093 for trip time curve
information on EntelliGuard G.
The Slope setpoint has three available
values:
•
– constant-time delay band
•
– Increasing slope values,
with 1 being the lowest, 3 the highest.
The GF Slope is set to OFF (Constant Time).
GROUND FAULT SUM ALARM
modifies the
This is the
GF CT Alarm operates identically to GF CT Protection, but
instead of tripping the circuit breaker, Alarm will raise a flag
available over Modbus, or it can be configured to energize
a digital output for external signaling.
See the section on Digital Output configuration for
information on how to set up an external contact closure
on GF CT Alarm activation.
GF CT is available only EntelliGuard G circuit breakers.
This is the
GF Sum Alarm operates identically to GF Sum Protection,
but instead of tripping the circuit breaker, Alarm will raise a
flag available over Modbus, or it can be configured to
energize a digital output for external signaling.
See the section on Digital Output configuration for
information on how to set up an external contact closure
on GF Sum Alarm activation.
See DES-093 for trip time curve information on EntelliGuard
G.
See DES-098a for trip time curve information on legacy
breakers.
See DES-093 for trip time curve information on EntelliGuard
G.
ZONE SELECTIVE INTERLOCKING SETUP
The optional
enhanced coordination of tiered
breaker installations.
The
setting lets you select which
protection elements will participate
in the ZSI scheme – a combination of
GF, ST and/or Instantaneous, or
none. The options available for
selection are dependent on which
factory options were ordered on the
trip unit. If no ZSI option is installed on the trip unit, this
screen will not appear.
When a trip unit equipped with ZSI receives a signal on its
ZSI Input terminals, it will adjust the delay band settings for
the configured protection elements to delay tripping, giving
the downstream breaker time to clear the fault.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Setting up the Trip Unit
OFF
GF only, GF & ST, ST only, INST only, GF & INST, ST & INST
GF-ST-IN
What this shows:
Zone Selective Interlock (ZSI) ST
What this shows:
Zone Selective Interlock (ZSI) GF
What this shows:
Protective Relay
OFF
ON
The available ZSI setting combinations (available selections
vary by options):
• OFF
• GF ONLY
• GF & ST
• ST ONLY
• INST ONLY
• GF-INST
• ST-INST
• GF-INST-ST
ZSI can be configured in the following combinations:
and
This screen shows you which combination of protection
elements participate with ZSI to provide enhanced
coordination.
ZONE SELECTIVE INTERLOCK SHORT TIME (ST) SETUP
.
The
setting is an alternative ST delay band
and slope combination that will
override the GTU ST setpoints
whenever the trip unit receives a valid
ZSI input signal. This equates to the
RESTRAINED, selective setting.
The normal short time setting
becomes the unrestrained, protective
setting.
,
ZONE SELECTIVE INTERLOCK GROUND FAULT SETUP
The
setting sets an alternative GF delay
band and slope setpoint combination
that will override the GTU GF
setpoints whenever the trip unit
receives a valid ZSI input signal.
ZSI is an optional element. If ZSI is not
installed in your trip unit, this screen
will not appear.
If ZSI is installed, but it is not
configured to operate with the GF
element, this screen will not appear.
If the GF element is disabled, the ST GF element is also
,
disabled, regardless of the value displayed here.
The GF Delay band configuration that will be put in force
when the ZSI input signal is active.
PROTECTIVE RELAY ENABLED
The
enables or disables tripping for
protective relays:
•
– protective relays will not
trip the breaker
•
– protective relays will trip the
breaker if the relay is configured to
trip.
Protective Relaying is an optional
feature. If it is not installed on the trip
unit, this screen will not appear.
Each relay can be disabled singly – so you can turn all of
them off with this screen, and allow any that are
configured to trip to do so.
VOLTAGE UNBALANCE RELAY
setting screen
ZSI is an optional element. If ZSI is not
installed in your trip unit, this screen
will not appear.
If ZSI is installed, but it is not
configured to operate with the ST
element, this screen will not appear.
If the ST element is turned OFF
(disabled) the ZSI ST element is also
disabled, regardless of the setting on this screen.
The ST Delay band configuration that will be put in force
when the ZSI input signal is active
feature. If protective relaying is not installed on the trip unit,
this screen will not appear.
•
– settable between 10% and 50% of the
average 3 phase current
•
– delay, from 1 to 15 seconds, between pickup
and trip. Setting the Band to OFF disables the relay
is part of the optional protective relay
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Setting up the Trip Unit
Power Reversal
Pickup
Band
Group 1
Group 2
NOTICE
trigger and latch this relay.
Group 3
POWER REVERSAL
feature. If protective relaying is not installed on the trip unit,
this screen will not appear.
•
steps
•
– delay, from 1 to 15 seconds, between pickup
and trip. Setting the Band to OFF disables the relay
OUTPUT RELAY – GROUP 1
is part of the optional protective relay
– settable between 10kW and 990kW, in 10kW
Output Relay configuration
links the Output Relay to the GF Sum
Alarm and GF CT Alarm (ONLY)
protection functions.
If the GF Sum or GF CT Alarm
elements pick up, the Output Relay
turns on, but does not latch. When
the GF alarm element drops out of
pickup, the Output Relay also drops
out.
1. If an Overcurrent Tripping element operates, the Output
Relay is latched on.
2. The Output Relay will remain latched after the tripping
element drops out until one of the following occurs:
• DC power is removed from the trip unit.
• The RESET RELAYS command is issued from the
STATUS menu on the trip unit LCD. Reset is
accomplished by pressing the ENTER button from
that screen.
• Modbus command 112 OFF is sent to the trip unit.
• An Input has been mapped to the “Reset Relays”
function, and is activated.
Although it is not explicitly mentioned here, RELT will
also latch an output relay mapped to Group 2. The RELT
trip will generate an Instantaneous trip event that will
links the relay to the
output relay.
If a relay assigned to GROUP 1 is ON, it cannot be reset by
command.
Output Relay configuration
Protective Relay trip functions (Voltage Unbalance, Under
Voltage, Over Voltage, Current Unbalance, Power Reversal).
links the relay to the
29
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Setting up the Trip Unit
Group 4
Group 5
Group 6
Group 7
Group 8
1. If a Protective Relay Tripping element operates, the
Output Relay is latched on.
2. If the Protective Relay drops out of pickup, the Output
Relay will remain latched.
3. The Output Relay will remain latched after the
Protective Relay drops out until one of the following
occurs:
• DC power is removed from the trip unit.
• The RESET RELAYS command is issued from the
STATUS menu on the trip unit LCD. Reset is
accomplished by pressing the ENTER button from
that screen.
• Modbus command 112 OFF is sent to the trip unit.
• An Input has been mapped to the “Reset Relays”
function, and is activated.
OUTPUT RELAY – GROUP 4 AND 5
OUTPUT RELAY – GROUP 7
Output Relay configuration
links the relay to the Reduced Energy
Let Through (RELT) function.
Whenever RELT is engaged the output
relay will be closed.
The RELAY cannot be reset from the
LCD or via communications while
RELT is active.
When the RELT command is removed,
RELT remains in force for 10-15
seconds. The Output Relay remains
closed during this time as well.
Relay 1 is automatically and permanently assigned Group 7
on any trip unit with the RELT option installed.
OUTPUT RELAY –GROUP 8
Output Relay configurations
and
Current Alarm 1 and Current Alarm 2
element, respectively.
1. If the associated Current Alarm
goes into pickup, the Output Relay is
turned on.
2. The Output Relay drops out when
the associated Current Alarm drops
out of pickup, or if DC power is
removed.
3. The Output Relay cannot be reset by LCD command as
long as the Current Alarm is in pickup.
4. The Output Relay cannot be reset over Modbus as long
as the Current Alarm is in pickup.
OUTPUT RELAY – GROUP 6
Output Relay Configuration
links the output relay to the Error
status of the trip unit. Any internal
error condition that results in a
display on the Error Status screen will
set this output. The output does not
latch – it remains energized as long
as the error condition persists.
link the relay to the
Output Relay configuration
the relay to the GF Sum Alarm, GF Sum Trip, GF CT Alarm,
and GF CT Trip protection functions.
1. If the GF Sum or GF CT Tripping elements operate, the
Output Relay is latched on.
2. The Output Relay will not drop out if the tripping
element falls out of pickup.
3. The Output Relay will remain latched after the tripping
element drops out of pickup until one of the following
occurs:
• DC power is removed from the trip unit.
• The RESET RELAYS command is issued from the
STATUS menu on the trip unit LCD. Reset is
accomplished by pressing the ENTER button from
that screen.
• Modbus command 112 OFF is sent to the trip unit.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Setting up the Trip Unit
Groups 9, 10, and 11
Digital Inputs
RELT
OFF
TRIP
RESET
Current Alarms
4. If the GF Sum or GF CT Alarm elements pick up, the
Output Relay turns on, but does not latch. When the GF
alarm element drops out of pickup, the relay also drops
out.
5. If both GF Trip and Alarm elements trigger the relay, it
will latch, requiring reset.
OUTPUT RELAY – GROUPS 9, 10 AND 11
Output Relay configuration
devices only) link the relay to the REF Trip, SEF Trip, and UEF
Earth Fault Trip protection functions, respectively.
1. If the associated Earth Fault Tripping element operates,
the Output Relay is latched on.
2. The Output Relay will not drop out if the tripping
element falls out of pickup.
3. The Output Relay will remain latched after the element
drops out until one of the following occurs:
• DC power is removed from the trip unit.
• The RESET RELAYS command is issued from the
STATUS menu on the trip unit LCD. Reset is
accomplished by pressing the ENTER button from
that screen.
• Modbus command 112 OFF is sent to the trip unit.
(IEC
DIGITAL INPUT CONFIGURATION
breakers.
The number of available inputs varies by circuit breaker.
Power Break, AKR, and WavePro breakers provide one
digital input.
EntelliGuard G provides two digital inputs. The number of
inputs available matches the number of screens visible on
the trip unit
Inputs can be assigned functions as follows:
•
automatically and permanently assigned to RELT
activation.
•
response.
•
of a valid input signal.
•
receipt of a valid input signal.
CURRENT ALARMS
are available as options on many different
– if the RELT option is installed, INPUT 1 is
– activating the input does not produce any
– the breaker will be commanded to trip on receipt
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Setting up the Trip Unit
Neutral Pole
OFF
Bell Alarm
OFF
Current alarms can be configured to actuate relay outputs
when they go into pickup. They also have status flags that
can be monitored over Modbus.
The ON setting determines the level, as a percent of rating
plug current, where the current alarm will pickup.
If the highest measured phase current exceeds the pickup
threshold for more than 60 seconds, the alarm will activate.
Setting range is 50% to 100%.
Once in pickup, if the highest measured phase falls below
the OFF threshold for more than 60 seconds, the alarm will
drop out.
BELL ALARM LOCKOUT (PBII AND WAVEPRO ONLY)
WavePro, AKR and PB1 has a factory
installed Bell Alarm with Lockout
option that is triggered by the
mechanism, not the trip unit. So no
special configuration is needed on
AKR or PB1.
PBII fire the lockout on command
from the trip unit.
This screen will appear on Power
Break II trip units only.
The Output Relay assigned to the Current Alarm does not
latch. It tracks the state of the current alarm.
The OFF Setting cannot be set higher than the ON setting.
ALARM 1 and ALARM 2 operate identically, and
independently.
NEUTRAL POLE (ENTELLIGUARD G ONLY)
overcurrent protection setting for the
neutral pole of a 4 pole breaker.
This screen may be displayed on a 3
pole breaker, in which case it is
recommended that it be set to off.
There is no way for a 3 pole breaker
to open the neutral pole, so there is
no added protection provided by
enabling this feature.
The available settings are OFF, 50%,
63%, and 100%. This determines the
percentage of the Long Time pickup setting that will apply
to the neutral pole.
For example, if the Long Time Pickup is set to 1.0 and the
Neutral Pole is set to 50%, the Long Time Pickup setpoint
for the Neutral is 50%.
The neutral pole screen is not available on PB1, PBII,
WavePro, AK, AKR or Conversion Kit trip units.
setting determines the
The setting defines what functions
will trigger the Bell Alarm with Lockout (the factory default
is 15):
•
• 1 - Shunt Trip
• 2 - UVR Trip
• 3 - Over Current Trip
• 4 - Protective Relay Trip
• 5 - Shunt, UVR
• 6 - Shunt, Over Current
• 7 - Shunt, Protective
• 8 - UVR, Over Current
• 9 - UVR, Protective Relay
BELL ALARM
– Disabled/OFF
Relay
• 10 - Over Current,
Protective Relay
• 11 - Shunt Trip, UVR, Over
Current
• 12 - Shunt, UVR,
Protective Relay
• 13 - Shunt, Over Current,
Protective Relay
• 14 - UVR, Over Current,
Protective Relay
• 15 - Shunt, UVR, Over
Current, Protective Relay
This screen will appear on Power
Break II and WavePro trip units only.
The setting defines what functions will
trigger the
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Setting up the Trip Unit
Waveform Capture
DISABLE
MANUAL
OVERCURRENT
PROT REL
CUR AL 1, CUR AL 2
ALL
PT connection
PT Voltage
Power Direction
• 9 - UVR, Protective Relay
PT CONNECTION
• 10 - Over Current, Protective Relay
• 11 - Shunt Trip, UVR, Over Current
• 12 - Shunt Trip, UVR, Protective Relay
• 13 - Shunt Trip, Over Current, Protective Relay
• 14 - UVR, Over Current, Protective Relay
• 15 - Shunt Trip, UVR, Over Current, Protective Relay
POWER DEMAND INTERVAL
This setting determines the time
interval for power demand
averaging.
Setting range is 5 to 60 minutes.
WAVEFORM CAPTURE – LOAD OPTIONS
feature. If the feature is not installed,
this screen will not be available.
This screen determines the trigger
source for the trip unit’s waveform
capture utility.
Available settings:
•
not be triggered
•
•
trigger a capture
•
capture
•
capture
•
waveform capture, see “
Options,” above, on how to view a captures waveform
and clear the waveform
– the waveform is commanded over Modbus
– GF, LT, ST, INST overcurrent trips will
– Any protective relay trip will trigger a
– Current Alarm 1 or 2 can trigger a
– any of the above sources will generate a
– waveform capture will
Waveform Capture – Load
is an optional
voltage input configuration to be set
to match the wiring of incoming
Potential Transformer (PT).
On a 4 wire wye system, phase to
neutral voltage (PH-N) would be
selected.
On a 3 wire delta system, phase to
phase voltage (PH-PH) would be
selected.
With PH-N selected, power metering
values are shown per-phase as well as totals.
With PH-PH selected, power metering values are shown as
3 phase totals only.
This setpoint must match the wiring of the potential
transformer serving the trip unit.
PT VOLTAGE
that a full scale reading at the
potential transformer input is
correctly scaled.
The transformer ratios and voltage
conditioning circuits used with the
GTU will deliver 1.767VAC at rated
system voltage. This setpoint
determines what voltage is displayed
at full scale, and is normally set to
match the system voltage.
The range of setpoints is 120V to
600V. It can be set in increments of 1V or 10V by scrolling.
POWER DIRECTION
unit how power is flowing through
the breaker, and thus determines the
polarity.
This setting is used to determine the
correct sign for power factor and
other power readings.
It is also critical for the proper
operation of the power reversal
protective relay.
This setting should reflect the
direction of current flow during normal breaker operating
conditions to ensure proper polarity.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Setting up the Trip Unit
DATE and TIME
language
FREQUENCY
Frequency sets the trip unit’s internal
frequency to match the system
frequency.
Available settings are 50 and 60 hz.
Date and time values are pre-loaded for some point in the
future in registers 287 – 293. At the date and time entered
in those registers, command 103 is sent to the device,
which updates the device’s current date/time settings with
the new settings in the master clock.
The Date and Time need to be updated for Daylight savings
time, as it doesn’t have location based circuitry in the trip
unit. For the Event Log to record the Date and Time
Stamp, 24VDC is required on the trip unit.
Date:
• Y: Year, 3 Digits (2XXX), where XXX is the current year.
Example: 2010 would be Y: 010
MODBUS
Sets the communication parameters for the trip unit.
See SECTION 8: “Serial Communication” for details on how
to set up the Modbus communication.
• H: Hours, 2 Digit Field, 0-24 Hours where ZERO (0) is
Midnight
• M: Minutes, 2 Digit Field, 0-60 Minutes
• S: Seconds, 2 Digit Field, 0-60 Seconds
LANGUAGE
Sets the display
Available languages:
• English
• Spanish
• French
• German
• Chinese
SCREEN TIMEOUT
Enables and disables the “return to
home screen” feature.
Available settings are “Yes” and “No.”
Should be set to YES if Modbus
Sets the
The EntelliGuard Trip Unit has a Date and Time setting used
for Event Logs. The Date and Time can be set via the front
keypad, set-up software, or via Modbus communications.
The Modbus communication enables the Date and Time to
be set via a Clock Synchronization computer/server
(requires computer/server to communicate the Date and
Time in Modbus format).
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Metering Screens
SECTION 4. METERING SCREENS
% of Sensor (A)
Accuracy - % of Reading
±
50% – 85%
±
± 2.0%
What this shows:
Tip:
What this shows:
What this shows:
Metering values are dependent on the accuracy of the
current sensors in the breaker, see table below. Current
sensors in breakers are designed to be more accurate at
85% of current and greater than 100%, seeing their
purpose is protection. If you see negative or nondirectionally correct values check your power direction or
your voltage configuration. The frequency is determined
from the current. Current sensors are designed to be more
accurate/linear at full load current and above (where the
protection needs to be). The table below shows the
accuracy of the reading based on the percentage of the
sensor. This is consistent across all breaker types.
Table 4-1: GTU Nomenclature
When using Modbus serial communications, do not
leave this window displayed. Modbus response time will
increase due to the higher computing overhead to
continually update metering values.
EXTERNAL CT CURRENT METERING DISPLAY
(ENTELLIGUARD G ONLY)
The level of current flowing in the
external CT channel.
This display is only enabled when the
trip unit has Earth Fault or CT Ground
Fault protection options installed, and
the Monitoring advanced feature
enabled.
20% - 50%
85% - 100%
CURRENT METERING DISPLAY
The level of current flowing in each breaker phase.
Phase current metering is a standard feature of every GTU.
Neutral current display is optional and depends on the
configuration of the circuit breaker.
With 24V external power, metering data will be displayed
down to 8% of the installed sensor rating.
Without 24V external Power, the primary current flow
needs to cross the self-power operating threshold which
occurs between 10% and 15% of sensor before any
metering activity occurs. If metering is required below this
level, an external means of powering the trip unit will need
to be provided, because the breaker CTs are not capable of
generating enough energy to operate the trip unit below
this threshold.
10.0%
5.0%
VOLTAGE METERING DISPLAY
The system voltage.
This display is accessible only if the optional Monitoring
Function is installed.
When the PT Connection setpoint is PH-N, the voltage
display is configured for Phase to Neutral voltage.
When the PT connection setpoint is PH-PH, the phase to
phase voltage is displayed.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Status Screens
SECTION 5. STATUS SCREENS
What this shows:
What this shows:
SETTINGS STATUS SCREEN
A summary of all active overcurrent
protection elements. If an element is
available in the trip unit, but disabled
by setting it to OFF, it will not appear
on this list.
OUTPUT RELAY RESET
Pressing ENTER will unlatch any
latched output relays unless their
fault condition is still present.
PICKUP STATUS MESSAGES
Whenever one or more protection elements are “picked up”
and timing out toward tripping, a PICKUP indication will be
visible on the Home screen, and on the Pickup Status
screen.
When the trip unit is not in pickup, the word “Pickup” is not
displayed.
• When the trip unit is approaching LT pickup (above 95%
of setpoint) the word “Pickup” will be flashing.
• When the trip unit is solidly in pickup, the word “Pickup”
is constantly displayed.
• The green STATUS indicator on the trip unit also
indicates pickup status.
• When not picked up, the LED blinks twice, turns off for a
brief period, repeating.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Status Screens
What this shows:
NOTICE
BREAKER TRIP SOFTWARE REVISION 08.00.23 AND
message will be displayed on the LCD.
What this shows:
Breaker Status
What this shows:
When this error is displayed the trip unit uses its lowest
protection settings.
The rating plug error is generated under the following
conditions:
1. The rating plug is not installed.
2. The rating plug is not fully inserted into the trip unit.
3. The rating plug value is outside the range allowed for
the breaker’s sensor. For example, plugging a 4000A
rating plug in a 400A sensor circuit breaker will
generate this error or a 400A plug installed in a 4000A
Sensor Circuit Breaker
4. For IEC or Euro configurations, where the trip unit rating
is set programmatically, use of a rating plug other than
the UNIVERSAL type (The catalog number for a universal
rating plug is GTPUNIVU0000) will generate this error.
A Rating Plug error of some sort exists. The error can be
cleared by installing the correct rating plug.
BIM ERROR MESSAGES
The Breaker Information Module (BIM) is an electronic
rejection feature on EntelliGuard G Breakers only. When a
GTU powers up the first time in contact with a BIM, it
“absorbs” the BIM data and configures itself to match.
From that point forward every time the trip unit is powered
it will compare the data in the BIM against its own stored
values. Any mismatch will cause a BIM error and trip the
breaker.
GREATER.
If a BIM read fails the trip unit will not open the breaker,
instead it will modify its internal configuration to match
the AIC rating of the least capable breaker in the family.
The trip unit will periodically read the BIM after that, and
on a successful match the original settings will be
restored. While the BIM error persists a BIM Err
There is a mismatch between the Trip Unit’s stored breaker
configuration and the breaker configuration read back
from the breaker’s information module (BIM). This can be
caused by swapping trip units between breakers, or by a
bad connection between the BIM and the trip unit.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Event Messages
SECTION 6. EVENT MESSAGES
What this shows:
The Event window provides additional detail:
to clear the event log
The EntelliGuard Trip Unit maintains up to 10 event records.
These records can be accessed from the front panel by
selecting the EVENT menu item and scrolling through the
available event records. The EntelliGuard Setup Software
will also allow event retrieval and viewing via serial
communications.
Once the event log contains 10 events, new events will
overwrite the oldest stored event.
The trip unit will record event information for any of the
following:
• Long Time Trip
• Power Reversal Trip
LONG TIME TRIP EVENT MESSAGES
• Short Time Trip
• Instantaneous Trip
• Ground Fault
Summation Trip
• Ground Fault CT Trip
• Unrestricted Earth Fault
Trip
• Restricted Earth Fault
Trip
• Standby Earth Fault Trip
* EntelliGuard G only: Accessory Trip Events require optional Accessory
signaling contacts.
• Voltage Unbalance Trip
• Undervoltage Trip
• Current Unbalance Trip
• UVR Accessory Trip*
• Shunt Accessory Trip*
• Remote Close *
• Overtemperature
• RELT Trip
Press and hold the UP & DOWN buttons
simultaneously while viewing an event
The main window shows that the cause of the latest trip
was due to LT, and the fault current level was 485A.
Tripping phase, the total number of LT trips recorded by the
trip unit, the fault current, and the date & time of the fault.
Viewing the event log clears the event display on the main
window.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Trip Unit Integration
SECTION 7. TRIP UNIT INTEGRATION
REDUCED ENERGY LET-THROUGH (RELT) SWITCH WIRING
The RELT switch may be connected to a manually operated
two-position switch, a remote sensor, or both
simultaneously. The EntelliGuard TU trip unit provides a
feedback capability directly from the trip so you know the
signal got to the trip unit and the settings have changed.
Optionally, an indicating light may also be connected to the
source of control power so the user knows if control power
is available to change the setting. The trip unit does not
require its own control power to accept a RELT input and
change the Instantaneous trip pick according to the user
settings. However, if control power is available to the trip
unit, the feedback signal will function immediately, rather
than when the trip unit becomes self-powered through its
load current.
Figure 7-1: RELT Connection when Using Positive
Feedback from EntelliGuard TU Trip Unit
Figure 7-2: RELT Connection Without Positive Feedback
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Serial Communication
SECTION 8. SERIAL COMMUNICATION
Pin 2
Pin 3
Pin 6
Pin 8
•
•
The EntelliGuard Trip Unit offers Modbus RTU or Profibus DP
over RS-485 optionally, via terminals on the circuit
breaker’s secondary disconnect. Modbus RTU over RS-232
is always available via the front panel 15 pin Test Kit Dconnector. To use the RS232 Port in the front, the GTUTK20
Trip Unit Test Kit is recommended. The Test Kit supplies
convenient connections to computer serial ports and the
24VDC required for communication.
If a GTUTK20 test kit is not available you can create your
own test kit communications cable, using the following pin
assignments:
•
: Modbus RX
•
: Modbus TX
•
: +24VDC
•
: 24V Return
It is also possible to provide power to the trip unit through
the secondary disconnect on breakers so equipped,
eliminating the need to supply 24V through the test kit port.
Connection to computers lacking a 9 pin serial port may be
done reliably through a USB-to-serial converter readily
available at most office supply stores.
MODBUS RTU
Modbus is a master-slave protocol where a single host or
master device initiates and controls all communication
with the other devices (or slaves) on the network. The
hardware interface is implemented as duplex two-wire RS485, where data are transmitted and received in separate
time slices. Per the EIA-485 standard the number of
devices that can be connected on a single communication
port is limited to 32 (including the master).
Please refer to the EIA-485 standard for complete details of
the physical interface including cabling, termination, and
shielding.
Modbus Address Setting
In a Modbus RTU Network, each
EntelliGuard Trip Unit module must
have a unique address that can be
set from 1 to 247. Addresses do
not have to be sequential, but no
two units can have the same
address.
Generally, each unit added to the
link uses the next higher address,
starting at 1. The Modbus slave
address can be set using the keypad.
The Modbus slave address configuration can be set using
the LCD keypad, or over Modbus communications.
For LCD configuration, navigate to the Modbus Settings
window under the SETUP main menu item. Use the up and
down arrows to set the address to the desired value.
Modbus Baud Rate and Port Configuration
The EntelliGuard G Trip Unit
supports the configured baud rate
settings listed below, which can
be set using the keypad. The
Modbus Communications
parameter setting screen is
shown In Illustration to the left.
The EntelliGuard Trip Unit
supports the configured baud rate
settings listed below, which can
be set via keypad. The first
number is the baud rate (300–
19,200), the first digit after the
dash is the number of data bits
(fixed at 8), the letter represents the parity setting (N =
none, E = even, O = odd), and the last digit is the stop bit.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Serial Communication
Modbus Function Codes
The EntelliGuard Trip Unit supports the following function
codes:
• 03: Read Holding Registers
• 04: Read Input Registers
• 05: Force Single Coil
• 06: Preset Single Register
• 16: Preset Multiple Registers
Figure 8-1: RS-232 and RS-485 Connections
• 20: Read General Reference
Modbus Network Configuration
Figure 8-1 illustrates the standard two-wire Modbus
topology. To minimize the effects of reflections from the
ends of the RS-485 cable caused by impedance
discontinuities in the system, a line-terminating RC network
must be placed at each end of the bus, as illustrated in
Figure 8-1. The simplest solution is to connect the
terminator at the communication terminals of the devices
at each end of the bus.
In most cases, pull up and pull down resistors are not
required.
polarization, or if the master device does not provide
proper polarization, then a pair of resistors must be
attached to the RS-485 balanced wire pair, as follows:
• Pull-up resistor to 5 V on the positive line
• Pull-down resistor to common on the negative line
These resistors must be between 450 Ω and 650 Ω, and are
selected based on the maximum current flow permitted by
the connected devices. The latter may allow a higher
number of devices to be connected to the serial bus.
If one or more connected devices require
RS-485 Termination Considerations
Per the EIA485 standard, every RS-485 network must be
terminated at each end. GE recommends the SCI
Terminator Assembly, part number 1810-0106 for these
terminations. This terminator is applied at the first and last
device in a Modbus network chain, wired across the RX and
TX terminals. For trip units, the terminator can be located at
the secondary disconnect of the circuit breaker.
You can fabricate terminators using 120 Ω 5% ¼ watt
resistors in series with 50V 120pf capacitors.
Grounding Shielding Considerations
Figure 2-6 illustrates correct wiring for communications
and shield grounding. Follow this example to create a
secure grounding point for each device on the network.
Any surge will dissipate locally without being carried up or
down the network to other devices, thus minimizing the
chance for damage to devices due to surge or EMI.
RS-232 and RS-485 Connections
On the front panel of the EntelliGuard Trip Unit is a 15-pin
connector for the RS-232 Modbus connection. This
connector mates with a cable supplied with the GTUTK20
Digital Test Kit.
If the trip unit and circuit breaker are equipped with
optional RS-485 Modbus support, then the secondary
disconnect of the circuit breaker will have connections
designated for Communications. Two wires (RX and TX) are
required for Modbus.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Serial Communication
Device address
Function code
Data
CRC
Dead time
Device address
Function code
Data
CRC
Figure 8-2: Wiring for Shield Grounding
query and response message transaction consists of the
following parts:
•
•
•
: N bytes
•
: 2 bytes
•
These parts are as follows:
•
RTU transmission. The device address is a number
limited to the range of 0–247 and is associated with a
single device configured with a matching address. This
device receives and processes the transmission from
the master. Only the addressed slave device responds
to a transmission beginning with this address. A device
address of 0 indicates a broadcast command.
•
transmission and represents the commanded action to
the slave device (for queries from the master) or the
action that was taken by the slave device (for responses
from the slave). Codes between 1 and 127 are defined
as Modbus RTU functions. If a slave device responds
with a function code with the most significant bit (MSB)
equal to 1 (or equivalently a function code greater than
127), then the slave device did not perform the
commanded action and is signaling an error response.
: 1 byte
: 1 byte
: 3.5 bytes transmission time
– This is the first byte of each Modbus
– This is the second byte of each
Modbus RTU Message Format
The Modbus RTU protocol is strictly based upon a
transaction scheme in which a master device generates a
query and a slave device replies with a response. Each
•
– This field contains a variable number of bytes,
depending on the function performed. Data may
contain addresses, actual values, or setpoints.
•
– This is a two-byte error-checking code, known as
a Cyclic Redundancy Check. The Modbus RTU standard
requires each message to have a two-byte CRC
(commonly known as CRC-16 for 16 bits of error
checking) to be appended to every transmission.
If the EntelliGuard Trip Unit detects a CRC error in a
received Modbus message, the EntelliGuard Trip Unit does
not respond to the message. An error in the CRC
calculation indicates that one or more bytes of the
transmission were received incorrectly, so the entire
transmission is ignored, preventing an unintended
operation.
The CRC-16 calculation is an industry standard method
used for error detection.
ENTELLIGUARD TRIP UNIT FUNCTION CODE
The following sections describe the Modbus function code
supported by the EntelliGuard G Trip Unit.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Serial Communication
Address
Data
0002
0001
0003
0000
0004
0012
Master
Transmission
Bytes
Example
Description
message for slave
2
Function Code
1
03
read registers
Address
006B
Setpoints
bytes total
CRC 2 78 87
CRC error code
Slave Response
Bytes
Example
Description
slave 17
Function Code
1
03
read registers
bytes
definition above)
006B
Data 2 (see
definition above)
2
00 00
value in address
006C
definition above)
006D
CRC 2 54 83
CRC error code
Modbus Implementation:
EntelliGuard Trip Unit implementation
Master
Transmission
Bytes
Example
Description
message for slave
17
Function Code
1
04
read registers
Address
0008
Number of Actual
2
00 01
1 register = 2
bytes
CRC 2 B2 98
CRC error code
Slave Response
Bytes
Example
Description
Slave Address
1
11
message from
slave 17
Function Code
1
04
read registers
bytes
Data (see
definition above)
2
00 00
value in address
0008
CRC 2 78 F3
CRC error code
Modbus Implementation
EntelliGuard Trip Unit Implementation
Function Code 03H
For the EntelliGuard Trip Unit implementation of Modbus,
this function code can be used to read any setpoints
(“holding registers”). Holding registers are 16 bit (two byte)
values transmitted high order byte first. Thus all
EntelliGuard Trip Unit setpoints are sent as two bytes. The
maximum number of registers that can be read in one
transmission is 125.
The slave response to this function code is the slave
address, function code, a count of the number of data
bytes to follow, the data itself and the CRC. Each data item
is sent as a two byte number with the high order byte sent
first.
Read Actual Values
For the EntelliGuard Trip Unit implementation of Modbus,
this function code can be used to read any actual values
(“input registers”). Input registers are 16 bit (two byte)
values transmitted high order byte first. Thus all
EntelliGuard Trip Unit Actual Values are sent as two bytes.
The maximum number of registers that can be read in one
transmission is 125.
The slave response to this function code is the slave
address, function code, a count of the data bytes to follow,
the data itself and the CRC. Each data item is sent as a two
byte number with the high order byte sent first.
:
For example, consider a request for slave II to respond with
3 registers starting at address 006B. For this example the
register data in these addresses is listed below:
Table 8-1: Function Code 03H Example
The master/slave packets have the following format:
Table 8-2: Modbus Packet Format for Function Code 03H
Slave Address 1 11
Data Starting
Number of
2 00 6B data starting at
2 00 03 3 registers = 6
Slave Address 1 11 message from
For example, request slave 17 to respond with 1 register
starting at address 0008. For this example the value in this
register (0008) is 0000.
Table 8-3: Modbus Packet Format for Function Code 04H
This function code allows the master to request an
EntelliGuard Trip Unit to perform specific command
operations.
For example, to request slave 17 to execute operation code
108 (Trip Breaker), we have the following master/slave
packet format:
51
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Serial Communication
Master
Transmission
Bytes
Example
Description
message for slave
17
Function Code
1
05
execute operation
108
Code Value
2
FF 00
perform function
CRC 2 4E B7
CRC error code
Slave Response
Bytes
Example
Description
slave 17
Function Code
1
05
execute operation
108
Code Value
2
FF 00
perform function
CRC 2 4E B7
CRC error code
Modbus Implementation
EntelliGuard Trip Unit Implementation
Master
Transmission
Bytes
Example
Description
Slave Address
1
11
message for slave
17
setpoint
Address
00 D7
Data 2 00 02
data for setpoint
address00 D7
CRC 2 BA A3
CRC error code
Slave Response
Bytes
Example
Description
Slave Address
1
11
message from
slave 17
setpoint
Data Starting
2
00 D7
setpoint address
00 D7
CRC 2 BA A3
CRC error code
Modbus Implementation
EntelliGuard Trip Unit Implementation
Master
Transmission
Bytes
Example
Description
Slave Address
1
11
message for slave
17
Function Code
1
10
store setpoints
Data Starting
Address
2
04
5C setpoint
address 04 5C
Setpoints
bytes total
Byte Count
1
04 4
bytes of data
DATA 1 2 00 02
data for setpoint
address 04 5C
address 04 5D
CRC 2 31 11
CRC error code
Table 8-4: Modbus Packet Format for Function Code 05H
Slave Address 1 11
Operation Code 2 00 6C operation code
Slave Address 1 11 message from
Function Code 1 06 store single
Address
Data 2 00 02 data stored in
Function Code 10H
04 5C
setpoint address
Operation Code 2 00 6C operation code
Function Code 06H
Preset Single Register
Store Single Setpoint
This command allows the master to store a single setpoint
into the memory of an EntelliGuard Trip Unit. The slave
response to this function code is to echo the entire master
transmission.
For example, request slave 17 to store the value 2 in
setpoint address 215 (00 D7). After the transmission in this
example is complete, setpoints address 215 will contain the
value 2. The master/slave packet format is shown below:
Table 8-5: Modbus Packet Format for Function Code 06H
:
:
Preset Multiple Registers
Store Multiple Setpoints
This function code allows multiple Setpoints to be stored
into the EntelliGuard Trip Unit memory. Modbus “registers”
are 16-bit (two byte) values transmitted high order byte
first. Thus all EntelliGuard Trip Unit setpoints are sent as
two bytes. The maximum number of Setpoints that can be
stored in one transmission is dependent on the slave
device. Modbus allows up to a maximum of 60 holding
registers to be stored. The EntelliGuard Trip Unit response
to this function code is to echo the slave address, function
code, starting address, the number of Setpoints stored, and
the CRC.
For example, consider a request for slave 17 to store the
value 00 02 to setpoint address 00 D7 and the value 01 F4
to setpoint address 04 5D. After the transmission in this
example is complete, EntelliGuard Trip Unit slave 17 will
have the following setpoints information stored: The
master/slave packets have the following format:
Table 8-6: Modbus Packet Format for Function Code 10H
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Serial Communication
Slave Response
Bytes
Example
Description
slave 17
Function Code
1
10
store setpoints
Address
04 5C
Number of
Setpoints
2
00 02
2 setpoints
CRC 2 82 7A
CRC error code
Modbus Implementation
Master
Transmission
Bytes
Value
Slave Address 1 1 - 245
Function Code 1 0x14
Byte Count 1 0x07 to 0xF5
Reference Type 2 06
File Number
2
0x0001 (Read all 255 Events)
0x0002 (Read Current RMS)
Record Number
2
0x 0000 to 0x03E8
Register Length
2
0x0000 to 0 x 007B
Slave Address:
1 byte
Function Code
1 byte (with MSbit set to 1)
Exception
Code
1 byte
Crc:
2 bytes
02
03
Function Code 02
Function Code 03
Function Code 04
Function Code 05
Function Code 06
Function Code 16
Slave Address 1 11 message from
Data Starting
Function Code 20H
Read File Record
This command allows the master to read a file containing
the full 255 events and analog RMS data. All Request Data
Lengths are provided in terms of number of bytes and all
Record Lengths are provided in terms of registers.
Table 8-7: Modbus Packet Format for Function Code 20
2 04 5C setpoint address
:
The EntelliGuard Trip Unit implements the following
exception response codes:
• 01 - Illegal Function:
The function code transmitted is not one of the
functions supported by the EntelliGuard Trip Unit..
•
- Illegal Data Address:
The address referenced in the data field transmitted by
the master is not an allowable address for the
EntelliGuard Trip Unit.
•
- Illegal Data Value:
The value referenced in the data field transmitted by the
master is not within range for the selected data
address.
MODBUS REGISTER MAP
•
•
•
– Read Input Status
- Read Holding Registers
– Read Input Registers
ERROR RESPONSES
When an EntelliGuard Trip Unit detects an error other than
a CRC error, a response will be sent to the master. The
MSBit of the FUNCTION CODE byte will be set to 1 (i.e. the
function code sent from the slave will be equal to the
function code sent from the master plus 128). The
following byte will be an exception code indicating the type
of error that occurred. Transmissions received from the
master with CRC errors will be ignored by the EntelliGuard
Trip Unit.
The slave response to an error (other than CRC error) will
be:
Table 8-8: Slave Responses to Errors
•
•
•
See appendix C for the full register map.
PRACTICAL MODBUS SETUP
This section is intended to give you a quick and simple
checklist to run through when commissioning an
EntelliGuard Trip Unit on a Modbus Network. The goal is to
give you some concrete steps to get your device up and
running quickly by eliminating some of the guesswork.
Step 1: Set up the Serial Port on the Master Device
a. If your computer does not have a built-in 9 pin serial
port, you will have to attach a USB-to-serial adapter.
These devices are readily available at most office supply
stores or online. For best results, buy a name brand. Be
sure to install the driver software that comes with the
device.
b. Once the serial port hardware is enabled on the
computer, determine which “logical port” (COM1, COM2,
etc.) the computer has assigned to the port you plan to
use. This information is available in the “Device
Manager” function of Windows. Consult the web or your
computer’s help facility for information on how to
access the Device Manager.
The Device Manager will display information similar to
what you see below. The serial ports are listed under the
heading “Ports (COM & LPT).”
53
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Serial Communication
Register Address:
Function Code:
Expected Value:
Register Address:
Function Code
Expected Value
Register Address
Function Code
Expected Value
In this example, a USB-to-serial port has been configured
as COM1, and would be the port you would use to
communicate with the trip unit.
Step 2: Configure the Communication Settings on the
Trip Unit: Baud Rate, Parity, Stop Bits, Modbus Slave
Address/ID
Step 3: Supply 24VDC to the Trip Unit, and Connect the
Trip Unit to the Computer
You can connect a test kit between the computer and the
15 pin front panel port, or you can wire to the RS-485
terminals on the circuit breaker secondary disconnect.
Step 4: Configure the Master’s Communication
Parameters
• Modbus Address matches the trip unit
• Baud Rate matches trip unit
• Parity matches trip unit
• Stop bits equals trip unit
• Modbus requests are made using “Modbus RTU Serial”
Step 5: Attempt to Communicate with the Device
The registers listed below will return easily identified values
that can be confirmed by reading the same setting from
the device via LCD. This gives you instant feedback on
whether the system is properly configured or not.
a. Read Modbus address.
•
add 40001 for an address of 40212.
•
•
the trip unit
b. Trip the breaker.
•
add 1 for an address of 109.
•
•
c. Read voltage on Phase A. To generate voltage data,
engage the “Phase Current” feature on the GTUTK20
digital test kit.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Profibus Communication
SECTION 9. PROFIBUS COMMUNICATION
Profibus DP (Process Field Bus)
Profibus DPV1
A Profibus DP slave
Class 1 master
GSD
DEFINITIONS
on EN 50170 for field bus communication with DP
communication protocol. DP variant (decentralized
periphery) is the high-speed communication. Profibus DP
allows cyclic data transfer only between the automation
device (master) and the peripheral devices in a network.
The cyclic data transfer involves parameters, metering, and
diagnostic, analog, and alarm data. See Table 4-12 for a
complete list of cyclic telegrams.
addition to the cyclic communication, provides acyclic
communication for parameterization, alarm, diagnostic,
analog, RTC control, and control of the slaves.
DP, which processes information and sends its output to
: An extension of the DP protocol, which in
: Any peripheral device, such as GTU
: An open standard based
Figure 9-1: Profibus Communication Network
the Profibus class 1 and/or class 2 master. It must comply
with EN 50 170 standard, Volume 2, Profibus.
data exchange with its Profibus slave devices that is
usually a programmable logic controller (PLC) or a PC
running Profibus base logic.
: A device data (GSD), which is provided by GE on its
website, that has the operational characteristic of the GTU
DP. It provides the system with an easier means to change
communication options, diagnostic, metering among other
parameters.
PROFIBUS SYSTEM CONCEPT
The figure on the right shows the communication network
system overview consisting of: Profibus class 1 master (PLC
or PC), with cyclic data exchange GTU which are Profibus
DP slaves.
: The main controller for the high-speed
PROFIBUS DP-PARAMETERIZATION
The GTUsupports parameterization. The relay keeps its user
parameter data / setpoints in a non-volatile memory and
does not need device related parameterization during
startup of the DP master.
GTU can be parameterized via Profibus Class 1 using
Profibus parameterized service. In this case only default
configurations are allowed.
COMMUNICATION SETUP AND STATION ADDRESSES
The Profibus-DPV1 basic configuration has one DP master
and one DP slave. In a typical bus segment up to 32
stations can be connected (a repeater has to be used if
more than 32 stations operate on a bus). The end nodes on
a Profibus- DP network must be terminated to avoid
reflections on the bus line.
During projecting of the bus structure ensure that the bus
line is segmented dependent upon the length of the branch
lines, the maximum cable length, and the number of bus
stations. The allowable lengths are dependent upon
transmission speeds and are specified in the Profibus
standard DIN 19245-3 and in other publications dealing
with this topic.
55
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Profibus Communication
Cyclic Read
Telegram ID
Parameter
No. of
Bytes
Units
B5020
Temperature Input 1
2
B5021
Temperature Input 2
2
B5022
Temperature Input 3
2
B5023
Temperature Input 4
2
B5024
Voltage Phase A
2
B5025
Voltage Phase B
2
B5026
Voltage Phase C
2
B5027
Current Phase A
4
B5028
Current Phase B
4
B5029
Current Phase C
4
B5030
Current Phase N
4
B5031
Energy Total
8
B5032
Energy Rollover Count
2
B5033
Power Factor Phase A
2
B5034
Power Factor Phase B
2
B5035
Power Factor Phase C
2
B5036
Power Factor Total
2
B5037
Power Real Phase A
2
B5038
Power Real Phase B
2
B5039
Power Real Phase C
2
B5040
Power Real Total
2
B5041
Power Reactive Phase A
2
B5042
Power Reactive Phase B
2
B5043
Power Reactive Phase C
2
B5044
Power Reactive Total
2
B5045
Power Apparent Phase A
2
B5046
Power Apparent Phase B
2
B5047
Power Apparent Phase C
2
B5048
Power Apparent Total
2
B5049
Power Demand Total
2
B5050
Frequency Measured
2
B5051
Longtime Pickup Status
2
B5052
Discrete Flags
6
Status
Bell Alarm/
Actuation
Actuation
Status
Status
Status
Status
Status
15
14
13
12
11
10 9 8
B1_7
B1_6
B1_5
B1_4
B1_3
B1_2
B1_1
B1_0 1 1 1 1 1 1 1 1
255
The Profibus bus address (MAC ID) of the GTU slave, which
has a range from 1 to 125, can be set via the front cover
switches. At power up, the GTU reads its address from the
two rotary switches on its front and initializes the bus
communication. Changes of the station address take effect
with the next reset or power up.
The GTU supports auto-baud rate detection. The available
baud rates and other slave specific information needed for
configuration are in the GTU GSD file, which is used by a
network configuration program.
To communicate with a Class 1 master (PLC) in a system,
the GTU GSD file is required.
PROFIBUS GTU DP CYCLIC DATA
The cyclic data is a fast process data transfer between the
Profibus DP master and the slave, which occurs once in
every DP cycle. GTU is a modular device supporting up to
144 bytes of input data.
Modules define a block size of input and output data to be
read by the master, starting from offset zero. During the
network configuration session, modules with varying sizes
of input data are provided in the GSD file.
GTU CYCLIC READ TELEGRAM DEFINITIONS
Table 9-1: GTU Cyclic Read Telegram Definitions
The following tables describe the 6 bytes of GTU discrete flags cyclic input data provided in the GSD file:
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Battery Information
SECTION 10. BATTERY INFORMATION
The trip unit has a front pane-mounted battery. When the
battery is present, the user scan view data on the LCD and
read or program the trip unit via the keypads. The battery
allows the user to display data, change set points and
provide thermal memory.
During normal operation the trip unit is powered either
from current flow in the circuit breaker’s internal current
transformers or from an external DC supply. When neither
of these sources is available it is still possible to review and
modify settings or view events in the EntelliGuard TU using
power from the internal battery. Pressing any keypad
button will bring up the LCD display allowing full navigation
of the trip unit’s menus. Note that only the LCD function is
powered by the battery – communications, digital I/O and
protection functions are not powered in this mode of
operation.
The trip unit will automatically shut off after 20 sec when
battery powered to maximize battery life.
Duracell CR2 is the replacement battery.
BATTERY FUNCTION
Pressing any key on the face of the trip unit powers the unit
from its internal battery. Battery power is maintained for 20
sec after the last key is pressed.
This self-powered mode allows setting up the trip unit or
viewing trip targets when the breaker is de-energized and
external control power is unavailable.
All normal setup, meter, and status functions can be
performed with battery power.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Maintenance and Troubleshooting
SECTION 11. MAINTENANCE AND
TROUBLESHOOTING
DANGER
ELECTROCUTION
Failure to comply with these instructions could result
in death or serious injury.
WARNING
IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE
Failure to comply with these instructions could result
in death or serious injury.
WARNING
PERSONAL INJURY
Failure to comply with these instructions could result
in death or serious injury.
NOTICE
approximately 40% of the current sensor rating.
WARNING
IMPROPER REPLACEMENT
Failure to comply with these instructions could result
in death or serious injury.
WARNING
IMPROPER DISPOSAL
Failure to comply with these instructions could result
in death or serious injury.
Figure 11-1: Trip Unit with Rating Plug Removed
Ensure the circuit breaker has been tripped, indicating
OFF, and the main springs are fully discharged when
performing circuit breaker maintenance.
Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.
BATTERY REPLACEMENT
• Replace the battery with 3.6 V ½ AA lithium battery
only
• Wear hardhat, gloves, and safety shoes when
replacing the battery
• Avoid risk of injury from moving parts while handling
the circuit breaker
• If advisable, use a cable/busbar lockable grounding
device (optional accessory) to provide additional safety
during system maintenance
RATING PLUG REMOVAL AND REPLACEMENT
Removal of the rating plug while the breaker is carrying
current reduces the breaker's current-carrying capacity to
Interchangeable rating plugs are removed with a Rating
Plug Extractor, Catalog No. TRTOOL. (Suitable equivalents
are commercially available as "integrated circuit [DIP]
extractors.") Grasp the rating plug tabs with the extractor
and pull the plug out as shown in the figure below.
Be sure to grab the tabs and not the front cover of the
rating plug, or the plug may be damaged.
• Ensure battery is properly disposed of according to all
applicable regulations
Replace the battery if it does not power up the trip unit
when any key is pressed.
Lift the battery cover on the front of the trip unit to expose
the 3.6 V ½ AA lithium cell. A suitable replacement is a
Duracell CR2.
The battery was stored too long with
no power applied to the trip unit.
the metering calculations take
precedence over Modbus
communications and can create a
Check the rating plug label.
and set trip unit PT to this value.
Set the trip unit phase to phase PH-PH or phase to
neutral PH-N according to the system.
Power the trip unit with external power or by
energizing the breaker for several days to freshen
the battery.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Maintenance and Troubleshooting
Other General Troubleshooting Issues
•Nuisance tripping
Review Pickup, Band and Slope settings. Coordination
Study is optimal but remember EntelliGuard has Delay
bands and slopes that can be much faster than MVT.
Settings that are lower than application can support
can create nuisance tripping. E.g. Transformer or Motor
Magnetizing inrush can be up to 10 to 15X nominal and
setpoints set to low enough pickup and delay may
nuisance trip on this if not set appropriately.
•Nuisance firing of Bell Alarm on PB2
Review settings of Bell Alarm LO (lockout) and Bell Alarm
(alarm only). Consult settings instruction. Group 3 is for
Overcurrent trip only (most used setting). Many units
have had default setting of Group 15 where any trip
condition such as shunt, UVR or Prot. Relay will fire the
bell alarm. If Bell Alarm still nuisance fire with the
correct setting, contact Post Sales Service (PSS).
• Display will not come up with battery power and or
line current
The internal battery power supply can be used at 10%
or lower current and CT’s will power up the trip unit at
15% or greater. Between 10 and 15% the CT’s or the
internal battery power supply may not power the
display. A test kit or external battery pack tvpbp and
tvpbpacc can be used as well as external 24VDC power.
The backlight requires either 24V, external battery pack,
test kit or nearly full CT power.
• Nuisance trip when pressing keypad and under
communication
Contact Post Sales Service 1-888-GE-RESOLVE, 1-800GE-RESOLVE
•RELT Instantaneous cannot be set
If the trip unit does not have the required 24VDC control
power, it cannot read RELT inputs and will not allow
setting to be changed. You can change settings when
powered with 24VDC, test kit or battery pack.
•Confusion about GF CT vs. GF Sum
GF CT is only for special situations where an external
zero sequence detecting CT is used around all phases
and wired to an EntelliGuard G breaker (not a neutral
CT). Most applications are GF Sum (including use of a
neutral CT and those without).
duty and the contacts are closed only during the GF
Fault condition.
• Breaker contact status reads incorrectly (e.g., on a
PB2 display reads Closed when breaker is Open)
Trip unit can only read correct status when trip unit if
fully powered by either CT current of approximately.
80%, 24VDC, test kit or battery pack.
• Batteries go dead prematurely (e.g., within few
months)
Excessive use of keypad (hours) can cause this.
Otherwise if load current is constantly at 10 to 20% of
CT rating, contact PSS.
•GF nuisance tripping on EntelliGuard G breakers
Verify there is not a GF sensing application issue such
as incorrect neutral sensor polarity, incorrect bonding at
neutral CT or downstream or related issues. Check
current metering when breaker is OPEN, if currents do
not read zero trip unit will need to be replaced-contact
PSS to determine if warranty.
•BIM trip
If trip unit is installed into a breaker other than the one
this was first installed in, this will occur. NEW trip units
should not cause this when first installed into a breaker.
If this occurs with a new trip unit that was not installed
in a breaker, contact PSS as the breaker BIM module
might be corrupt.
Software Revision 8.00.23 and greater: If a BIM read
fails the trip unit will not trip the breaker, instead it will
modify its internal configuration to match the AIC rating
of the least capable breaker in the family. The trip unit
will periodically read the BIM after that, and on a
successful match the original settings will be restored.
While the BIM error persists a BIM Err message will be
displayed on the LCD.
•Nuisance trip with NO EVENT information
Verify there are no accessories and that settings are not
too low in the presence of high inrush conditions at low
CT current causing the trip and then contact PSS.
•Settings cannot be changed to desired level
Check in the SETUP Long time pickup screen that the LT
pickup multiplied by the Rating plug equals the Pickup
Amps displayed (e.g. 0.5 LTPU times a 2000A plug
equals 1000A displayed on the bottom of LTPU screen.
•GF Alarm relay is not staying on
If the output Relay is used for GF Alarm, it is momentary
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Installation
SECTION 13. INSTALLATION
DANGER
ELECTROCUTION
Failure to comply with these instructions could result
in death or serious injury.
WARNING
IMPROPER INSTALLATION, OPERATION, SERVICE, AND
MAINTENANCE
Failure to comply with these instructions could result
in death or serious injury.
WARNING
FALLING OBJECT
Failure to comply with these instructions could result
in death or serious injury.
CAUTION
Product Damage
Failure to comply with these instructions may result in
product damage.
• Ensure the circuit breaker has been tripped, indicating
OFF and that applicable lock-out/tag-out requirements
are met and followed
• Ensure the main springs are fully discharged
• Do not touch the circuit breaker’s isolating contacts
during lifting
• Ensure only qualified personnel install, operate, service
and maintain all electrical equipment
• Do not perform any maintenance, including breaker
charging, closing, tripping, or any other function that
could cause significant movement of circuit breaker
while it is on the draw-out extension rails
• Ensure circuit breaker is always left in the CONNECTED,
TEST or DISCONNECTED position to avoid
mispositioning of the breaker and flashback
• Contact GE for rewiring information before using the
EntelliGuard TU trip unit to replace the Micro-Versa PM
trip unit. This is because connecting the MicroVersa’s
24 V (commnet system) directly to the EntelliGuard
(Modbus system) will damage the EntelliGuard’s RS485
chip
• Ensure circuit breaker and its accessories are always
used within their designated ratings
• Ensure the correct trip unit is paired with the correct
circuit breaker
• Do not use excessive force when installing a trip unit.
• Do not allow circuit breaker to hit a hard surface while
handling.
• Do not drag or slide circuit breaker across a hard or
rough surface.
TRIP UNIT REMOVAL AND REPLACEMENT
Power Break I, Power Break II, WavePro and AKR Trip Units
have rejection pins, installed on the rear of these trip units,
to prevent installation of an incorrect trip unit into a
breaker.
• Ensure lifting equipment has capability for device being
lifted
• Wear hard hat, gloves and safety shoes
Replacement of a trip unit always requires repeating the
setup procedures
Power Break I and Power Break II Insulated Case Circuit
Breakers
The trip unit procedures for Power Break I and Power Break
II circuit breakers are very similar and are outlined below.
The EntelliGuard TU trip unit for a Power Break I is different
than that for a Power Break II (see SECTION 1: “General
Information”). Ensure the correct trip unit is used.
Trip Unit Removal
1. Loosen the four #8-32 screws on the circuit breaker
trim-plate assembly and remove the trim plate.
2. Loosen the four #10-32 screws at the corner of the
breaker cover. Remove the cover from the breaker face.
3. Pull the trip unit locking lever to the right, then hold the
trip unit near the battery cover and lift it straight out of
the circuit breaker.
EntelliGuard TU Trip Units: UL/ANSI Models DEH-4567B
Installation
Type 1
Type 2
Type 3
Trip Unit Reinstallation
1. Pull the trip unit locking lever to the right. While holding
the lever, carefully align the connector on the rear of the
trip unit with the connector in the breaker. Press down
on the trip unit while holding it near the battery cover.
When the trip unit is fully seated, slide the locking lever
back to the left.
2. Reinstall the breaker top cover and tighten the four
#10-32 screws to 32 in-lb.
3. Replace the trim plate and tighten the four #8-32
screws to 20 in-lb.
WavePro Circuit Breakers
4. Insert the racking handle and return the racking
mechanism to the DISC position, as shown by the drawout position indicator.
5. Reinstall the circuit breaker into its cubical or
substructure.
AKR (225 A to 5000 A Frames) Circuit Breakers
1. Open the circuit breaker by pressing the red TRIP button
on the front of the breaker escutcheon.
2. Disconnect any secondary wire harnesses between the
breaker and the switchgear.
3. On draw-out breakers, rack the breaker all the way out
to the DISCONNECT position.
Removal
1. Open the circuit breaker and remove it from the cubicle
or substructure. Place it on a suitable work surface.
2. For 800 A, 1600 A and 2000 A frame circuit breakers,
insert the racking handle (catalog number 568B731G1)
and move the racking mechanism to the TEST position,
as shown on the draw-out position indicator.
3. Depress the OPEN button to close the racking door.
4. Remove the wire forms and remove the trim plate from
the breaker.
5. Remove the six ¼ hex head screws, securing the
escutcheon to the breaker (three at top and three at
bottom). Pull the manual-charging handle out part way,
and then slide off the escutcheon.
6. Pull out the locking side on the right of the trip unit
mounting plate, and then pull the trip unit out carefully
disengaging the pins on the rear connector.
7. Pull out the locking side on the right of the trip unit
mounting plate, and then pull the trip unit out carefully
disengaging the pins on the rear connector.
Reinstallation
4. Follow the instructions on the label attached to the
PROGRAMMER RELEASE LEVER to remove the trip unit.
There are three types of mounting plates:
•
: Push in the lever to release the trip unit
•
: Pull out the lever to release the trip unit as
shown in
•
5. If the breaker is equipped with a MicroVersaTrip® 9 trip
unit, the 36-pin trip unit connector must be removed
and remounted on the adapter bracket provided. Slide
the connector out of the mounting plate and install it on
the adapter bracket, as shown in Figure 13-2.
Figure 13-1
: Push down on the lever
Figure 13-1: Removing the Old Trip Unit
1. Pull out the locking side on the right of the trip unit
mounting plate. Push the trip unit into place, carefully,
engaging the 50 pin connector and lining up the
rejection posts on the rear of the trip unit with the holes
in the mounting plate. Push the locking slide to the left.
2. Ensure the breaker racking mechanism is still in the
TEST position. Pull the manual charging handle out
partway, and then slide the handle through the slot in
the escutcheon and move escutcheon into place. Insert
the six mounting screws and tighten to 14-20 in-lb.
3. Replace the trim plate around the escutcheon by rehooking the wire forms into the sides.
DEH-4567B EntelliGuard TU Trip Units: UL/ANSI Models
Installation
6. Align the connectors and rejection pin and connect the
EntelliGuard TU to the circuit breaker, as shown in
Figure 13-3.
Figure 13-3: Installing the New Trip Unit
EntelliGuard G Circuit Breaker Installation
Figure 13-6: Trip Unit Removal Sequence, Step C
Figure 13-7: Trip Unit Removal Sequence, Step D
Trip Unit Removal (Figure 13-4 through Figure 13-7)
1. Loosen the six screws on the breaker fascia assembly
and remove the fascia.
2. Depress
trip unit, then hold the trip unit near the bottom and lift
it straight out of the mounting base.
the trip unit locking lever on the left side of the
Figure 13-4: Trip Unit Removal Sequence, Step A
Figure 13-5: Trip Unit Removal Sequence, Step B
Trip Unit Reinstallation
1. Depress the trip unit locking lever on the left side of the
trip unit
connector on the rear of the trip unit with the connector
in the mounting base on the breaker. Press down on the
trip unit while holding it near the bottom.
2. When the trip unit is fully seated, stop depressing the
trip-unit-locking lever and allow the lever to come up
and lock the trip unit to the mounting base.
3. Reinstall the breaker fascia and ensure that the Trip unit
is centered in the fascia window before tightening the
fascia fixing screws.
LT Pickup Values may be set
according to old setting
Power+
.95, 1, 1.1
according to old setting
(LSIG)
LT Delay
1
C4, C5
C5
MVT LT 1.pdf
LT Delay
2
C6, C7, C8
C7
MVT LT 2.pdf
See
Publications
LT Delay
3
C10, C11, C12, C13
C12
MVT LT 3.pdf
GES-9865
LT Delay
4
C15, C16, C17, C18
C18
MVT LT 4.pdf
GES-9863
ST Pickup MVT
1.5 - 9.0 in 0.5
increments
ST Pickup Values may be set
according to old setting
Power+
7, 9
according to old setting
DES-002B
ST Delay
1 (Min)
Bands 5, 6, 7
Band 6
MVT ST 1(Min).pdf
ST Delay
2 (Int)
Bands 8, 9
Band 9
MVT ST 2(Int).pdf
ST Delay
3 (Max)
Bands 10, 11
Band 11
MVT ST 3(Max).pdf
ST I2T
Out / Off
ST Slope = 0 (OFF)
ST Slope = 0 (OFF)
see above curves
ST I2T
In / On
ST Slope = 3 (Max)
ST Slope = 3 (Max)
MVT ST I2T.pdf
Inst
Dependent on
Instantaneous Pickup Values
setting
trip unit rating
according to old setting
GF Delay
1 (Min)
Bands 3, 4
Band 4
MVT GF 1(Min).pdf
GF Delay
2 (Int)
Band 7
Band 7
MVT GF 2(Int).pdf
GF Delay
3 (Max)
Bands 8, 9
Band 9
MVT GF 3(Max).pdf
GF I2T
Out / Off
GF Slope = 0 (OFF)
ST Slope = 0 (OFF)
see above curves
GF I2T
In / On
GF Slope = I2T
GF Slope = I2T
MVT GF I2T.pdf
These settings approximate settings on previous generation trip units. It is recommended to evaluate each breaker on a
case by case basis to determine if alternate settings provide improved coordination and protection versus the
ST Band Comparisons have been developed not to exceed max clearing time of other trip units to maintain or lower arc
flash hazard values.