GE Industrial Solutions Spectra RMS Molded Case User Manual
GE Energy
Industrial Solutions
GEH-702 Users Manual
®
Spectra
RMS Molded Case
Circuit Breakers
with microEntelliGuard
TM
Trip Units
GEH-702 Users Manual
Standard Protection
Advanced Protection
Advanced Features
Long Time
Neutral Protection
Metering (Basic/Advanced)
Short Time
Zone Selective Interlock (ST/GF/INST)
Communications (Modbus)
Instantaneous
Reduced Energy Let-through
Waveform Capture
Ground Fault (trip or alarm)
Spectra® RMS Circuit Breakers with microEntelliGuard
The microEntelliGuard
TM
Trip Unit is the latest and most advanced trip unit available in the Spectra line of
TM
Trip Unit
molded case circuit breakers. The trip unit design is based on the EntelliGuard trip unit platform. The
microEntelliGuard
TM
Trip Unit incorporates many of the advanced features and protective functions available
on the EntelliGuard Trip Unit and is available in the 600-amp Spectra G and 1200-amp Spectra K frames.
Spectra breakers with microEntelliGuard
TM
Trip Units allow you to select the enhanced system protection,
coordination, and communication options required for the application.
Table 1. Catalog Number Nomenclature
SK PC 36 12 L4 R 6
1. SKT and SKS catalog codes are optimized for selectivity and will carry a
480Vac maximum voltage rating.
Code Description
SK SK1200
HC
LC/TC1
PC/SC1
HH
LL/TT1
PP/SS
3, 4 or
08
10
12
L3
L4
L5
L7
X
K
Z
T
R
L
M
N
V
P
S
W
X
2
6
8
35kA at
480Vac
65kA at
480Vac
100kA at 480
35kA at
480Vac
65kA at
1
6 3 Poles, 480Vac or 600Vac
480Vac 100% Continuous UL Rating
100kA at 480
800
1000
1200
LSI
LSIG
LSIA
LSI-CP
None
Neutral
ZSI
ZSI
RELT
ZSI (ST/G F)
ZSI (ST/G F) + Neutral
ZSI (ST/G F) + RELT + Neutral
RELT + Neutral
ZSI (ST/GF/INST)
ZSI (ST/GF/INST) + Neutral
ZSI (ST/GF/INST) + REL T + Neutral
Meterin g
Meterin g
Meterin g (Adv) + Modbu s + Waveform
Meterin g (Adv) + Modbu s + Waveform
Amps
Amps
Amps
Protection
(ST/GF)
(ST/GF/INST)
+ RELT
(Basic)
(Basic)
Vac
Vac
SK
L =
S =
I = Instantaneous
G =
A =
CP = Control
Protection
Protection
+ RELT
+ Modbus
Standard UL
Frame
Long
Time
Short
Time
Ground
Ground Fault
Protection
Protection
Protection
Rating
Fault
Alarm
Power
Capture
Capture + Protective Relays
Function
Frame
Interruption
Poles, Max UL
Max
Designation
Amps
Standard
Protection
Functions
Advanced
Functions
Protection
Advanced Features
Communication
Rating
Voltage
&
GEH-702 Users Manual
2
Warnings, Cautions, and Notes as Used in this Publication
Warnings - Warning notices are used in this publication to emphasize that hazardous voltages, currents, or
other conditions that could cause personal injury are present in this equipment or may be associated
with its use.
Warning notices are also used for situations in which inattention or lack of equipment knowledge could cause
either personal injury or damage to equipment.
Cautions - Caution notices are used for situations in which equipment might be damaged if care is not taken.
Notes - Notes call attention to information that is especially significant to understanding and operating the
equipment.
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.
GEH-702 Users Manual
3
Table of Contents
Spectra RMS Circuit Breakers with
microEntelliGuard™ Trip Unit ……………………………… 1
Section 1
Read This First ………………………………………………………… 5
Trip Unit Functions…………………………………………………… 5
Standard Protection Functions …………………………………… 5
Advanced Protection Functions …………………………………… 5
Advanced Features And Communications ……………….. 6
Rating Plugs ……………………………………………………………… 6
Equipment Interfaces ……………………………………………… 8
Neutral Current Transformers ……………………………………… 8
Terminal Blocks ………………………………………………………………… 8
Distribution Cable Junction Boxes ……………………………… 9
Power Supplies ………………………………………………………………… 9
Voltage Conditioners …………………………………………………… 10
Voltage Modules …………………………………………………………… 11
Distribution And Extension Cables …………………………… 11
Auxiliary Switches ………………………………………………………… 11
Communications …………………………………………………………… 12
Reduced Energy Let-Through …………………………………… 12
Zone Selective Interlock ……………………………………………… 12
Section 2
microEntelliGuard™ Trip Unit ……………………………… 14
Overview ………………………………………………………………………… 14
HMI …………………………………………………………………………………… 14
Liquid Crystal Display and Power Requirements ….. 14
Led Status Indicator ……………………………………………………… 15
Trip Unit Operating Modes ………………………………………… 15
Setup Mode……………………………………………………………………… 15
Language (Standard) ………………………………………………… 16
Long Time Pickup (Standard)…………………………………… 16
Long Time Delay (Standard) ………………………………….... 16
Short Time Pickup (Standard) ………………………………… 17
Short Time Delay
Instantaneous Pickup (S
Reduced Energy Let-Through (RELT)
Instantaneous Pickup (Optional)………………………… 18
Ground Fault Pickup (Trip Or Alarm) (Optional)…… 18
Ground Fault Delay (Trip Or Alarm) (Optional) ……. 19
Zone Selective Interlock (ZSI) (Optional) ………………. 19
(Standard)
tandard)
……………………………………. 17
…………………………… 18
Neutral Protection Pickup (Optional) …………………… 20
Protective Relays (Optional) …………………………………… 20
Output Relays (Optional) ………………………………………… 21
Waveform Capture (Optional) ………………………………… 21
Frequency (Standard) ……………………………………………… 21
Potential Transformer Primary Voltage
(Optional) ……………………………………………………………….. 21
Potential Transformer Connection (Optional) …… 21
Power Direction (Optional) …………………………………….. 22
Phase Rotation (Standard) ……………………………………...22
Thermal Memory
Auxiliary Switch (S
(Standard)
tandard)
……………………………………… 22
…………………………………… 22
Modbus (Optional) ……………………………………………………. 22
Date And Time (Standard)…………………………………………22
Metering Mode ……………………………………………………………. 23
Operating Mode ………………………………………………………. 23
Current (On All Trip Units) ………………………………………. 23
Voltage (Advanced Metering Only)………………………… 23
Real Power (Advanced Metering Only) ………………… 23
Reactive Power (Advanced Metering Only) ………… 23
Apparent Power (Advanced Metering Only) ……… 23
Peak Power Demand (Advanced Metering Only) . 23
Energy (Advanced Metering Only) ………………………… 24
Frequency (Advanced Metering Only) ………………… 24
Power Factor (Advanced Metering Only)……………… 24
Settings Mode ……………………………………………………………….. 24
Setting Status ……………………………………………………………. 24
Pickup Status ……………………………………………………………. 24
Error Status ………………………………………………………………. 24
Version ………………………………………………………………………. 24
Comm Settings …………………………………………………………. 24
Events Mode …………………………………………………………………. 24
Appendix A. Display Screen Flow ………………………….. 25
Appendix B. Modbus Register Map ……………………….. 28
Appendix C. Breaker Harness Pin-Outs ……………….. 45
Appendix D. Metering …………………………………………….. 47
Appendix E. Troubleshooting. ……………………………….. 48
Appendix F. Replacing MicroVersaTrip with
microEntelliGuard™ ………………………………………………. 49
Appendix G. Additional Information …………………….. 50
GEH-702 Users Manual
4
Table of Figures
Figure 1. Typical Neutral CT Connection ……………………… 9
Table of Tables
Table 1. Catalog Number Nomenclature ……………………… 1
Figure 2. Typical Power Supply Connection
Using a Terminal Block ……………………………………………… 10
Figure 3. Typical RELT Wiring Diagram …………………………. 12
Figure 4. Typical microEntelliGuard System ……………….. 13
Figure 5. LED Location ……………………………………………………… 14
Figure 6.
Keypad
Definition ……………………………………………. 14
Figure 7. Typical LCD Screen …………………………………………. 14
Figure 8. Long Time Pickup……………………………………………… 16
Figure 9. Long Time Delay ………………………………………………. 16
Figure 10. Short Time Pickup ………………………………………… 17
Figure 11. Short Time Delay with Slope Off…………………. 17
Figure 12. Short Time Delay Set to Maximum ……………. 17
Figure 13. Instantaneous Pickup …………………………………... 18
Figure 14. Ground Fault Pickup ……………………………………… 18
Figure 15. Ground Fault Delay ………………………………………. 19
Figure 16. System With Voltage Swap Cable ……………. 22
Figure 17. Signal Definitions 20-Pin Harness
(Breaker Pigtail) ……………………………………………………………… 45
Figure 18. Signal Definitions 12-Pin Harness
(Breaker Pigtail) ……………………………………………………………… 46
Figure 19. DB15 Connector …………………………………………… 46
Figure 20. MicroVersaTrip vs. microEntelliGuard
Conversion ……………………………………………………………………… 49
Figure 21. MicroVersaTrip Commnet Wiring ………………. 49
Figure 22. microEntelliGuard
TM
Modbus
Connection …………………………………………………………………… 50
Table 2. Rating Plug Catalog Numbers…………………………… 7
Table 3. Harness Type Definition………………………………………. 8
Table 4. Neutral CT’s …………………………………………………………… 8
Table 5. Terminal Block Descriptions ……………………………… 8
Table 6. Junction Box Descriptions ………………………………… 9
Table 7. Power Supply Plate Catalog Numbers ……………. 9
Table 8. Voltage Conditioner Plate Assemblies ………….. 10
Table 9. Voltage Module Catalog Numbers………………….. 11
Table 10. Distribution Cable Harness Options …………….. 11
Table 11. Extension Cable Harness Options ……………….. 11
Table 12. Voltage Exchange Harness Options …………….. 11
Table 13. Auxiliary Switch Options ………………………………... 11
Table 14. LED Status Flash Sequence ………………………….. 15
Table 15. Nominal Time Delays………………………………………… 16
Table 16. Available Instantaneous Pickup…………………….. 18
Table 17. ZSI Settings ……………………………………………………….. 20
Table 18. Output Relay Group Assignments ………………… 21
Table 19. Waveform Capture Setup……………………………….. 21
Table 20. Setup Mode Programming …………………………….. 25
Table 21. Wye Configuration Metering………………………….. 27
Table 22. Delta Configuration Metering ………………………. 27
Table 23. Status Screen Definitions ………………………………. 28
Table 24. Event Mode Screen Definitions ……………………. 28
Table 25. Discrete Input , Function Code 2 …………………. 29
Table 26. Communication Parameters:
Modbus Function 3 (Read Only)………………………………… 30
Table 27. Communication Parameters:
Modbus Function 3 (Read/Write Parameters) ………. 31
Table 28. Communication Parameters:
Modbus Function 4 ……………………………………………………… 40
Table 29. Communication Parameters:
Modbus Function 5 ……………………………………………………… 44
Table 30. Metering Accuracy …………………………………………. 47
GEH-702 Users Manual
5
Section 1
Read This First
Proper circuit protection depends on setting up and
installing the circuit breaker correctly. Do not attempt
to energize the circuit breaker before thoroughly
understanding all of the trip unit setup parameters
and ensuring that they are set correctly and that
associated equipment and interfaces are also installed
and connected correctly.
Spectra breakers with microEntelliGuard
use rating plugs to set the breaker current rating.
Ensure that an appropriately sized rating plug is
installed into the trip unit prior to programming the
trip unit . Failure to install a rating plug can result in
unwanted trips. Installing a rating plug that is not
intended for the frame rating can result in unwanted
trips, and could result in improper protection.
When setting up the trip unit for the first time, use
external 24Vdc control power (via external control
power, test kit , or portable batter pack) to ensure that
all protection parameters are programmed correctly.
CAUTION - Removal of the rating plug while the
breaker is carrying current reduces the breaker’s
current-carrying capacity to the minimum rating
plug value of the current sensor. This may result in
unwanted tripping.
NOTE - Trip Units as received may have settings that
are undesirable for the specific application. Ensure that
settings are appropriately adjusted before energizing
the breaker.
TM
Trip Units
Trip Unit Functions
This section describes the standard and advanced
protective functions and the advanced features
and communication capabilities offered on the
microEntelliGuard
Standard Protection Functions
Adjustable Long Time (pickup and time
Three different sets of curve shapes are available with
slopes that mimic traditional MicroVersaTrip® long time
curves (I2t), recursive thermal curves (thermal-mag circuit
breaker) and fuse emulation (I4t).
Adjustable Short Time (pickup and time
standard. An option to turn the short time function off
is also included. Multiple slope functions are available
with I2t IN or OUT.
Adjustable Instantaneous (pickup) is standard.
Adjustable Ground Fault (pickup and time
optional. This feature causes the breaker to TRIP when
responding to a ground fault.
Adjustable Ground Fault Alarm (pickup and time delay)
is optional. This feature causes the breaker to ALARM
(programmable output contact closure) when
responding to a ground fault (the breaker will NOT trip).
Advanced Protection Functions
Neutral Protection (pickup and time
This protection function is designed to protect
the neutral from an overload condition (typical in
applications where there are harmonics).
Zone Selective Interlock (ZSI) is optional. Restraint
signals are available on Short Time, Ground Fault and
Instantaneous.
Reduced Energy Let-Through (RELT) is optional. This
feature allows a second instantaneous pickup setting
at a reduced level and is enabled via an external signal
(contact closure or communications).
TM
Trip Unit.
delay)
delay)
delay)
is standard.
is
delay)
is
is optional.
GEH-702 Users Manual
6
Advanced Features and Communications
Basic Metering is standard. The metering option
displays
current for all three phases.
Advanced Metering is optional. This feature displays
current , voltage, real power, reactive power, apparent
power, peak power demand, energy, frequency, and
power factor for all three phases. Proper operation
of the advanced metering function requires multiple
system accessories including power supplies, voltage
conditioners, junction boxes, and interconnect cables.
Modbus Communications is optional. The
communications option allows the breaker/trip unit to
communicate all breaker data to an outside network.
Waveform Capture is optional. This option stores eight
cycles worth of data into digital memory that can be
output via the trip unit’s DB-15 connector, or over the
Modbus interface.
Two Programmable Output Contacts (two) are optional.
This feature is included on breakers/trip units that are
optioned with any of the following functions or features
• Ground Fault Alarm
• Zone Selective Interlock
• Reduced Energy Let-Through
• Protective Relays
Breakers/trip units optioned with any of the above
features have a 20-pin harness/connector and require
accessories that accommodate the 20-pin connector
(see section on equipment interfaces).
Rating Plugs
The microEntelliGuard
TM
Trip Unit uses a rating plug to
establish or change the current rating of the breaker.
Each breaker frame/sensor combination has multiple
rating plugs available that are interchangeable
within the trip unit . Rating plugs available for
microEntelliGuard
TM
Trip Units are shown in Table 2.
These rating plugs are compatible with EntelliGuard trip
units. Note that the same rating plug catalog number
can be used across multiple breaker sensor ratings.
For example, GTP0150U0104 is a 150 amp-rating plug
that can be used in the Spectra microEntelliGuard
TM
G
frame with 150 amp or 400 amp sensors.
7
SG (Max
Amps)
SK
(Max Amps)
Rating
Plug
Product Numbers
Trip
Amps
150
400
600
800
1000
1200
GTP0060U01
01
60
X
GTP0080U01
01
80
X
GTP01
OOU01
03
100
X
GTP0125U0103
125
X
GTP0150U01
04
150
X X
GTP0200U0204
200
X
GTP0225U0306
225
X X
GTP0250U0407
250
X X
GTP0300U0408
300
X X X
GTP0350U0408
350
X X X
GTP0400U0410
400
X X X
GTP0450U0612
450
X X X X
GTP0500U0613
500
X X X X
GTP0600U0616
600
X X X X
GTP0700U0816
700
X X X
GTP0750U0820
750
X X X
GTP0800U0820
800
X X X
GTP0900U1020
900
X X
GTP1
OOOU1
025
1000
X X
GTP11
OOU1225
1100
X
GTP1200U1232
1200
X
GEH-702 Users Manual
Table 2.Rating Plug Catalog
Numbers
8
GEH-702 Users Manual
CTB
arness
CTB C
arness
CTB C
arness
POWER (+24Vdc)
X X X
POWER (common)
X X X
Communications +
X X X
Communications -
X X X
Aux Switch (red)
X X
Aux Switch (white)
X X
Voltage – Ph A
X X
Voltage – Ph B
X X
Voltage – Ph C
X X
Neutral CT (black)
X X X
Neutral CT (white)
X X X
ZSI input +
X
ZSI input -
X
ZSI output +
X
ZSI output -
X
RELT input +
X
X
RELT input -
X
X
RELT output +
X
X
RELT/GFA output -
X
X
GFA output +
X
X
St
d.
Pr
otect
F
unction
Adv.
Pr
otect
F
unction
Adv.
Features
& Modbus
Example: SGHC3601….
L3 X
X
No Harness
L3 X
X
20-Pin Harness
L5 Any Any
20-Pin Harness
Any
Z,T,R, L,M,N,
V,P,S,W
Any
20-Pin Harness
Any Any 8
12-Pin Harness
All Other Cases
Breaker
Type
Breaker Current
Sensor Rating (S)
Catalog
Number
SG
150
400
600
TSRG201
TSRG204
TSRG206
SK
800
1200
TSKG408
TSKG412
Equipment Interfaces
Equipment interfaces for Spectra microEntelliGuard™
breakers require special attention be paid to the
wiring harness arrangement on the circuit breaker
which depends on the features and functions that are
selected for the microEntelliGuard™ Trip Unit . The three
wiring harness arrangements are NO harness, 12-Pin
harness, and 20-Pin harness. Table 3 identifies the
harness arrangement based on the last four digits of
the circuit breaker catalog number.
Table 3. Harness Type Definition
Note: Find the last four digits of the breaker catalog number in the table to identify
the harness type.
Neutral Current Transformers
Neutral CT’s are required on breakers optioned for
neutral protection. Neutral CT’s are also required on
breakers optioned for Ground Fault/Ground Fault Alarm
where the system voltage is three-phase/four-wire or
single phase/three-wire. The list of available neutral
CT’s is shown in Table 4.
Table 4. Neutral CT’s
CAUTION: Neutral-current sensors are required for
three-phase/four-wire and single-phase/three-wire
systems. When the trip unit is connected to a three
phase/three-wire system, the neutral-current sensor
terminals are left open. Do not short any neutralcurrent sensor terminals in a three-phase/three-
wire system, as this could result in damage to or
malfunction of the electrical system.
Terminal Blocks
Three different terminal block options are available for
Spectra microEntelliGuard
12-Pin harness have one option for a terminal block
where breakers with a 20-Pin harness have two
terminal block options. The table below shows the
terminal descriptions for each terminal block catalog
number.
Table 5. Terminal Block Descriptions
Termi al
escrip
TM
breakers. Breakers with a
-Pi
-Pi
-Pi
Connection to the neutral CT is made via a distribution
cable terminal block (three options) or a distribution
cable junction box (two options). Note: Terminal block
and junction box selection depends on the breaker
wiring harness, either a 12-Pin harness or 20-Pin
harness. Refer to Figure 1 for an example neutral CT
wiring connection diagram using a terminal block.
Terminal blocks are used for input and output
connections for multiple trip unit functions, metering,
and communications.
9
GEH-702 Users Manual
Description
SDCJBB
SDCJBBC
Breaker Harness (qty. 1)
12-Pin
20-Pin
Output Harness (qty. 2)
12-Pin
12-Pin
Aux Switch (red/white)
X
X
Neutral CT (black/white)
X
X
Communications
X
X
ZSI input +/-
X
ZSI output +/-
X
RELT input X
Prog Contact output +/-
X
Prog Contact output +/-
X
Cat. No.
AC Source Rating
SPSAl20
120 Vac, one-phase input & one neutral input
1
SPSA208
208 Vac, two-phase inputs
SPSA240
240 Vac, two-phase inputs
SPSA480
480 Vac, two-phase inputs
2
SPSA600
600 Vac, two-phase inputs
2
Figure 1. Typical Neutral CT Connection Using a Terminal Block
Distribution Cable Junction Boxes
Two different distribution cable junction boxes are
available for Spectra microEntelliGuard
TM
breakers.
Breakers with a 12-Pin harness use catalog number
SDCJBB. Breakers with a 20-Pin harness use catalog
number SDCJBBC. The junction box serves as the
interconnection point between various shared input
and output signals, and also acts as the interface
between multiple breakers within a system.
Table 6. Junction Box Descriptions
The programmable contact output connections on
the SDCJBBC are dedicated if ground fault alarm and/
or reduced energy let-through features are optioned
in the trip unit . Otherwise, the output contacts can
be programmed to signal on various overcurrent trip
conditions and protective relays.
Power Supplies
An outside source of 24Vdc control power is required
for communications and waveform capture. Control
power is also required for programming the trip unit
under no-load or low-load conditions (less than 20%
of sensor rating). Control power connections to the
breaker can be made through the terminal block or the
distribution cable junction box. Five different power
supply plate assemblies are available. The power
supplies are rated 24 watts (+24 Vdc at 1.0 amps)
and have the capacity to power 20 Spectra breakers/
trip units over a length of 40 feet (total distance from
power supply to last breaker). The power supply plate
assemblies include the power supply, fuse protection
and a control power transformer for ac source voltages
over 240 VAC. All of these components are mounted on
a base plate. Table 7 lists the available power supply
plate assemblies. Figure 2 shows a typical power
supply connection using a terminal block.
Table 7. Power Supply Plate Catalog Numbers
1. Fuse protection on one leg only.
2. Contain a control power transformer to step the voltage down.
The power supply used in the power supply plate
assemblies is available as a stand-alone component
(catalog number SPSAA) and requires an 85-240 Vac,
60 Hz input.
10
GEH-702 Users Manual
Catalog
Number
Source Voltage Rating
Comments
SVCA120Y
120 Vac conn.
to N potential)
SVCA208Y
208 Vac conn.
to potential)
SVCA240D
240 Vac Delta conn.
to potential)
SVCA277Y
277 Vac conn.
to N potential)
SVCA480Y
480 Vac conn.
to potential)
SVCA480D
480 Vac Delta conn.
to potential)
SVCA600D
600 Vac Delta conn.
to potential)
Figure 2. Typical Power Supply Connection Using a Terminal Block
Voltage Conditioners
System voltage inputs are required in order for some
advanced metering and protective relay functions to
operate correctly (any calculation involving voltage
such as power or undervoltage). Seven different
voltage conditioner plate assemblies are available.
The voltage conditioner used in the assembly has
the capacity to provide voltage-sensing signals to 20
Spectra breaker/trip units over a length of 40 feet (total
distance from voltage conditioner to last breaker). The
voltage conditioner requires +24 Vdc control power (see
section on Power Supplies). The voltage conditioner
plate assemblies include the voltage conditioner, fuse
protection and three 1-VA high-accuracy potential
transformers.
Table 8 lists the available voltage conditioner plate
assemblies. The voltage conditioner used in the
voltage conditioner plate assemblies is available as a
stand-alone component (catalog number SPSAA).
Table 8. Voltage Conditioner Plate Assemblies
GEH-702 Users Manual
Catalog Number
Source Voltage Rating
Comments
ADSVMA120Y
120 Vac Wye conn.
to N potential
ADSVMA208Y
208 Vac Wye conn.
to potential
ADSVMA240D
240 Vac Delta conn.
to potential
ADSVMA277Y
277 Vac Wye conn.
to N potential
ADSVMA480Y
480 Vac Wye conn.
to potential
ADSVMA480D
480 Vac Delta conn.
to potential
ADSVMA600D
600 Vac Delta conn.
to potential
Catalog Number
No. of Switch Elements
Switch Rating
SAUXGAB1
SAUXGAB2
1 form C
2 form C
Gold-Plated
Contacts
0.5 A @ 30 V
Catalog Number
Length (in)
Wire Connectors
SDCHA11
11
12-Pin
SDCHA30
30
12-Pin
SDCHA60
60
12-Pin
Catalog Number
Length (in)
Wire Connectors
SDCAA6
6
12-Pin
SDCAA6C
6
20-Pin
Catalog Number
Length (in)
Wire Connectors
SDCEA30
30
12-Pin
SDCEA30C
30
20-Pin
Voltage Modules
For Spectra Series
TM
Switchboard applications involving
Spectra microEntelliGuard
TM
breakers that require
Table 10. Distribution Cable Harness Options
control power and voltage signals, modules are
available that incorporate both the power supply and
voltage conditioner (see Table 9). The modules are 5
“X” units high (6 7/8 inches) and mount in 45-inch wide
distribution sections. The modules connect to the
vertical bus bars in the switchboard and provide control
power and voltage signals to the system.
Table 9. Voltage Module Catalog Numbers
Extension cables are used to increase the length of
an existing cable. Because the Spectra
microEntelliGuard
TM
breakers come with both 12-Pin
and 20-Pin wiring harnesses, there are two different
extension cables available.
Table 11. Extension Cable Harness Options
Voltage exchange cables are available and are
necessary for breakers with advanced metering when
installed in group-mounted equipment. These cables
connect between the breaker and the distribution cable
junction box and reverse the voltage signals being
Mounting a distribution cable junction box in the front input to the breaker (from V AV BV C to VCVBVA). Refer to the
vertical upright of the switchboard across from the
Spectra microEntelliGuard
TM
breaker/trip unit permits
group mounting of the breaker. Group mounted
Spectra breakers with an auxiliary switch that connects
Phase Rotation description in the Setup Mode section
of this manual.
Table 12. Voltage Exchange Harness Options
to a junction box require a 1 “X” filler plate adjacent
to the breaker’s right-hand side to accommodate the
auxiliary switch wiring.
Distribution and Extension Cables Interconnection
cables are required if equipment interfaces such as the
distribution cable junction box, power supply plate
assembly, voltage conditioner plate assembly are used.
These cables transmit electronic signals and/or control
power between the various interconnected
components. There are two different types of
interconnection cables available for Spectra
microEntelliGuard
TM
breakers – distribution cables and
extension cables.
Auxiliary Switches
An auxiliary switch is used to monitor the state of the
circuit breaker main contacts. Spectra
microEntelliGuard
TM
breakers with communications are
capable of communicating the breaker position when
an auxiliary switch is installed and connected via a
terminal board or junction box. Note: auxiliary switches
with gold plated contacts are required.
Table 13. Auxiliary Switch Options
Distribution cables are used to interconnect the
junction box, power supply plate assembly, and voltage
conditioner plate assembly. These cables have 12-
Pin connectors and are available in three different
lengths. Table 10 shows the different lengths and their
associated catalog numbers.
11
12
GEH-702 Users Manual
All Spectra circuit breakers use the same auxiliary
switches, which are installed in the breaker’s righthand accessory compartment. Group mounted
Spectra breakers with an auxiliary switch that connects
to a junction box require a 1 “X” filler plate adjacent
to the breaker’s right-hand side to accommodate the
auxiliary switch wiring.
Communications
The Spectra microEntelliGuard
with Modbus communications, which allows connection
to an external Modbus network and monitoring
platform. Connection to the network requires the
appropriate terminal board or junction box. Proper
operation of the circuit breaker’s protective functions is
not dependent on the communications network.
Spectra microEntelliGuard
with EnerVista Viewpoint power system software
allowing for remote monitoring and control of the
breaker. Viewpoint Monitoring automatically detects
Spectra microEntelliGuard
custom tailored monitoring screens, monitors power
quantities in real time (current, voltage, VARs, etc.), and
identifies the status of protected assets.
Reduced Energy Let-Through
Reduced energy let-through, or RELT, is an advanced
protective function that allows the trip unit to have
an alternate instantaneous pickup value. This
feature is intended to allow the user to set a lower
instantaneous pickup level and reduce the amount of
breaker let-through energy in the event of a fault . Trip
units optioned with the RELT function require either a
terminal board or junction box in order to wire the RELT
input and output signals. The RELT switch is enabled
via a 24V (AC or DC) signal across the input contacts or
via the Modbus communications network. This signal
can be derived from the power supply plate assembly
or it can be from a separate source. Trip units optioned
with the RELT function have dedicated input and output
contacts. The output contacts change state when the
RELT function is enabled. The output contacts are rated
1 amp, 60 Vac/Vdc. A RELT kit (catalog number GTURSK)
is available that provides an illuminated 3-position
selector switch allowing the user to select between
NORMAL, TEST, and ON positions. A typical wiring
diagram for the RELT connections is shown in Figure 3.
TM
breaker is available
TM
breakers are compatible
TM
breakers, generates
Figure 3. Typical RELT Wiring Diagram
Caution: Setting the RELT instantaneous pickup value
greater than the standard instantaneous pickup
value will result in higher breaker let-through energy
in the event of a fault . The factory default setting for
RELT instantaneous is 1.5 x sensor rating which is the
minimum setting value.
Zone Selective Interlock
Zone Selective Interlocking, or ZSI, is an advanced
protective function that allows one ZSI enabled trip
unit to communicate with another ZSI enabled trip
unit . The microEntelliGuard
TM
trip unit is available
with ZSI signaling on the short time, ground fault,
and instantaneous functions. In the event of an
overcurrent pickup condition, the downstream ZSI trip
unit signals the upstream ZSI trip unit to temporarily
change the affected pickup settings to values that
allow the downstream trip unit/breaker to respond to
the overcurrent condition (and the upstream breaker to
remain closed and continue to service other loads).
Trip units optioned with the ZSI function require either
a terminal board or junction box in order to wire the
ZSI input and output signals and +24Vdc control power.
A ZSI module (catalog number TIM1) is available that
allows multiple ZSI enabled trip units to communicate
with one another for optimal system selectivity.
GEH-702 Users Manual
Figure 4. Typical microEntelliGuard
TM
S
ystem
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14
GEH-702 Users Manual
Up
Scroll up or increment value
↓
Down
Scroll down or decrement value
→
Right
Next function or next page
←
Left
Previous function or previous page
Enter
Save or set into memory
Section 2
microEntelliGuard
TM
Trip Unit
Overview
The microEntelliGuard
most advanced trip unit available in the Spectra line
of molded case circuit breakers. The trip unit design is
based on the EntelliGuard
the EntelliGuard
microEntelliGuard
G & K frame circuit breakers. The next sections of this
instruction review the trip unit’s HMI (Human Machine
Interface), power requirements, operating modes,
and communications. If you are familiar with the
EntelliGuard
TM
Trip Unit , then many of the following
sections will be familiar to you.
Figure 5. LED Location
HMI
The microEntelliGuard
membrane
an LED indicator.
keypad,
TM
Trip Unit is the latest and
TM
TM
Trip Unit (which is removable), the
TM
Trip Unit is integral to the Spectra
LED
a liquid crystal
Trip Unit platform. Unlike
TM
HMI consists of a five-button
display
(LCD), and
The membrane
to navigate between the various operating modes and
set up screens. The pushbuttons are raised, which helps
with programming in low-light conditions. The effects
of each pushbutton are shown in the following figure.
Figure 6. Keypad Definition
keypad
has five pushbuttons that are used
Pushing and holding the UP and DOWN buttons causes
the
displayed
decr
ement. The RIGHT, LEFT, and ENTER buttons
value to continuously increment or
operate with individual keystrokes. Pressing and
holding the LEFT button causes the trip unit to return to
the “home” screen.
Figure 7. Typical LCD Screen
It is important to note that any programmable value
that is changed is NOT saved until the ENTER key
is pushed and that the ENTER key is pushed before
proceeding to the next or previous programming
screen. Advancing to the next screen or returning to a
previous screen without hitting the ENTER key causes
any changes to be lost .
Liquid Crystal Display and Power Requirements
The LCD is the visual interface that
displays
operating modes and setup screens of the trip unit .
Input power is required in order to illuminate the
microEntelliGuard
display
screens or making changes to setup values.
TM
Trip Unit’s LCD for viewing the
Any of the following power sources can be used.
Load Current – the trip unit will “self power” and
illuminate the LCD when sufficient current passes
through the circuit breaker. Sufficient current is defined
as 20% of the breaker’s sensor rating. A breaker
with 150 amp sensors requires at least 30 amps to
illuminate the LCD.
24 Vdc Control Power – microEntelliGuard
with 12-Pin and 20-Pin wiring harnesses can be
connected to 24 Vdc control power via a terminal board
connection or a junction box to illuminate the LCD.
the
TM
Trip Units
GEH-702 Users Manual
Breaker/Trip Unit Status
LED Sequence
NORMAL
ON-OFF-ON-OFF (wait for 2 sec)
PICKUP
ON-OFF-ON-OFF (continuous)
TRIP
ON-OFF (wait 2 sec)
ERROR
ON-OFF-ON-OFF-ON-OFF (wait 2 sec)
Digital Test Kit – the EntelliGuard test kit (catalog number
GTUTK20) connects to the microEntelliGuard
TM
DB-15
connector and provides 24 Vdc power to illuminate the LCD.
Portable Battery Pack – the Spectra portable battery
pack (catalog number TVPBP) in conjunction with an
adapter cable (TVPBPACC) connects to the
microEntelliGuard
Vdc power to illuminate the LCD.
LED Status Indicator
The microEntelliGuard
indicator, which signals the status of the trip
unit/breaker. There are four different status conditions.
NORMAL status means the breaker and trip unit are
functioning properly and that the trip unit is NOT in a
pickup condition. PICKUP status means that one of the
over-current protective functions or protective relays
has gone into pickup and that a trip is imminent. TRIP
status means that the breaker/trip unit has tripped due
to an over-current protective function, protective relay,
or trip unit error. ERROR status can mean any number
of conditions (for example, the rating plug is missing or
an improper rating plug is installed). In the event that
the LED sequence indicates an ERROR, check the error
code in the trip unit’s status menu. To reset the LED
pattern, once the issue is corrected, hold down the right
arrow key for two seconds.
Table 14. LED Status Flash Sequence
Trip Unit Operating Modes
The microEntelliGuard
operating modes. They are SETUP, METERING, STATUS,
and EVENTS. The SETUP mode is used to make
changes to all of the adjustable parameters optioned
in the trip unit. The METERING mode
current in each phase of the breaker. Trip units that
are optioned with advanced metering can display
voltage, power, and other pertinent parameters
associated with the system voltage. The STATUS mode
displays
settings, if the trip unit is in pickup mode, the position
of the breaker’s main contacts (requires installation of
pertinent information on trip unit protection
TM
DB-15 connector and provides 24
TM
HMI includes a green LED status
TM
trip unit has four different
displays
the
auxiliary switch) and communications settings. The
EVENTS mode displays information regarding overcurrent events.
Setup Mode
The following instructions describe setup procedures
for all of the available trip unit functions. All
microEntelliGuard
TM
Trip Units have adjustable long
time, short time and instantaneous over-current
protection options as well as a selectable ammeter.
All other functions are optional and depend on how
the trip unit is optioned. If a specific trip unit function
has not been optioned, that function will not appear
in the display. Setting for the over current protective
parameters (long time, short time, instantaneous,
and ground fault) establish the shape of the trip unit/
breaker’s time current curve. All optioned trip unit
parameters are factory preset values (reference
appendix A for factory preset values).
Prior to setting up the trip unit, ensure that
• An appropriate rating plug is installed (the trip unit
automatically checks and records the value of the
installed rating plug and will issue an error if the
rating plug is not appropriate or missing).
• A professional engineer has performed a system
coordination study and provided the appropriate
setup values to be programmed into the trip unit
(inappropriate setup values can cause the breaker to
trip
unexpectedly
or not provide the intended circuit
protection).
• The LCD is illuminated via an appropriate power source.
When the LCD is first illuminated, the “home” page
displays
buttons on the
When STATUS is highlighted, push the right button to
get into the SETUP screens. Use the RIGHT and LEFT
buttons to move to the various setup options. Use the
UP and DOWN buttons to change parameter values.
Any value that is changed using the UP or DOWN
buttons will flash to indicate that a change has been
made. Note: values that are changed must be saved
to memory on the screen in which they were changed.
Press and hold the ENTER button to save changes.
Failure to save setting changes before proceeding
to the next screen causes the setting to return to its
previous setting. Always confirm trip unit settings after
making changes by exiting and re-entering the SETUP
mode and rechecking each setting.
SETUP, METERING, STATUS, EVENTS. Use the
keypad
to move up and down the menu.
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