Basler Electric BE1-50/51B-121 User Manual
INSTRUCTION MANUAL
FOR
BE1-50/51B
OVERCURRENT RELAY
Part Numbers
9252000121
9252000123
Publication: 9252000893
Revision: C 12/11
9252000893
First Printing: May 2004
Printed in USA
Copyright © 2004-2011 Basler Electric, Highland Illinois USA
December 2011
INTRODUTION
This manual, publication 9252000893, covers BE1-50/51B-121 (P/N 9252000121) and BE1-50/51B-123
(P/N 9252000123) relays and is a special version of the standard manual for the BE1-50/51B-214 and
BE1-50/51B-225 relays. The BE1-50/51B-121 and BE1-50/51B-123 relays are modified versions of the
BE1-50/51B-214, have five ampere current sensing, and provide an extended instantaneous element
time delay.
BE1-50/51B-121 and BE1-50/51B-123 relays have the following features.
• The BE1-50/51B-121 relay plugs directly into a GE IAC case with no modification of case wiring
required.
• The BE1-50/51B-123 relay is provided with a case and wiring is required.
• BE1-50/51B-121 and BE1-50/51B-123 relays provide up to 300 milliseconds of instantaneous
element time delay.
• BE1-50/51B-121 and BE1-50/51B-123 relays replicate ABB CO and IEC time characteristic
curves.
OPERATING DIFFERENCES
Operating differences between the BE1-50/51B-121 and BE1-50/51B-123 relays and the standard BE150/51B-214 relay center around the function of configuration switch SW3 and the time characteristic
curves available in the relays.
SW3 Settings
Operation of switch SW3 (illustrated in Figure 2-2) in the BE1-50/51B-121 and BE1-50/51B-123 differs
from that in the BE1-50/51B-214 relay. SW3 operation is summarized in the following paragraphs.
SW3-1 Selects the system operating frequency.
Off selects 60 hertz operation.
On selects 50 hertz operation.
SW3-2 Selects an additional 100 milliseconds of instantaneous element time delay.
Off disables additional 100 milliseconds of time delay.
On enables additional 100 milliseconds of time delay.
SW3-3 Selects an additional 200 milliseconds of instantaneous element time delay.
Off disables additional 200 milliseconds of time delay.
On enables additional 200 milliseconds of time delay.
SW3-4 Selects either instantaneous or integrating reset characteristic.
Off selects instantaneous reset.
On selects integrating reset.
Placing both SW3-2 and SW3-3 in the On position provides a total instantaneous element
time delay of 300 milliseconds.
The integrating reset function operates only when there is sufficient sensing current to
power the relay.
Time Characteristic Curves
The ABB CO and IEC curves listed in Table 1-3 are available for selection in the BE1-50/51B-121 and
BE1-50/51B-123 relays. GE IAC curves are not available in these relays.
A-1
A-2
INTRODUCTION
This instruction manual provides information about the operation and installation of the BE1-50/51B-214/215/-223/-225 Overcurrent Relays. To accomplish this, the following information is provided:
General Information and Specifications
Controls and Indicators
Functional Description
Installation and Maintenance
Testing
WARNING!
To avoid personal injury or equipment damage, only qualified personnel should
perform the procedures in this manual.
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Introduction i
First Printing: July 1995
Printed in USA
© 1995-2011 Basler Electric, Highland Illinois 62249 USA
All Rights Reserved
December 2011
CONFIDENTIAL INFORMATION
of Basler Electric, Highland Illinois, USA. It is loaned for confidential use,
subject to return on request, and with the mutual understanding that it will not
be used in any manner detrimental to the interest of Basler Electric.
It is not the intention of this manual to cover all details and variations in equipment, nor does this manual
provide data for every possible contingency regarding installation or operation. The availability and design
of all features and options are subject to modification without notice. Should further information be
required, contact Basler Electric.
BASLER ELECTRIC
12570 STATE ROUTE 143
HIGHLAND IL 62249 USA
http://www.basler.com, info@basler.com
PHONE +1 618.654.2341 FAX +1 618.654.2351
ii BE1-50/51B-214/-215/-223/-225 Introduction 9252000994 Rev P
REVISION HISTORY
The following information provides a historical summary of the changes made to this instruction manual
(9252000994). Revisions are listed in reverse chronological order.
Manual
Revision and Date
P, 12/11
N, 04/10
M, 07/09
L, 01/09
K, 03/08
J, 01/07
H, 05/06
G, 03/00
F, 12/00
E, 12/99
D, 05/98
C, 12/95
B, 10/95
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Introduction iii
Made changes to reflect that a new connection plug is included with
the relay.
Updated year of IEEE C37.90 specifications in Section 1.
Improved description of Locator H (Active/Pickup LED) in Table 2-1.
Added BE1-50/51B-223 model.
Added the required information to document part number
9252000215.
Removed notes about hard-wiring relay case to ground since relay
is a direct replacement, i.e. not shipped with a case.
Updated Storage statement in Section 4.
Modified Figure 5-2, Target Operational Test Setup.
In Section 5, modified Target Test so that TIME and INST targets
can be verified independently from each other.
Minor text edits throughout manual.
Updated front panel drawings to show new reset button and targets.
Moved Time Characteristic Curve Figures to Appendix A.
Moved Section 6, Maintenance information into Section 4,
Installation.
In Section 5, Testing, Test Procedure, Models BE1-50/51B-225
(One Ampere Sensing Input) Time Dial Test, corrected the elapsed
time stated in step 2.
Added the relay’s metric weight to Section 1, General Information,
Specifications.
Moved contents of Section 7, Manual Change Information to the
manual introduction and deleted Section 7.
Added the required information to document part number
9252000225.
Updated the drawings in Section 2 to reflect PC board updates.
Updated the remainder of the manual to reflect switch designation
change from SW8 to SW3.
Added new functional description to the Active/Pickup LED
(formerly designated Pickup LED).
Changed all target test current references to 1 Aac.
Deleted step 5 of Section 6, Maintenance, Periodic Tests.
Added the patent number to Section 1, General Information,
Specifications.
Updated format of the manual.
Added material to document the addition of five characteristic
curves and ability to select curve groups GE IAC or ABB.
Changed Section 5, Testing to use the GE IAC curve group.
Changed Figure 5-2 and all references to the target testing current
source from 0.2 to 1.0 amperes.
Corrected various, minor typographical errors in Sections 1 and 2.
Change
Manual
Revision and Date
A, 08/95
—, 07/95
Change
Removed all references to switch SW8-4 being field settable.
Initial release
iv BE1-50/51B-214/-215/-223/-225 Introduction 9252000994 Rev P
CONTENTS
SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1
SECTION 2 • CONTROLS AND INDICATORS ........................................................................................ 2-1
SECTION 3 • FUNCTIONAL DESCRIPTION ........................................................................................... 3-1
SECTION 4 • INSTALLATION .................................................................................................................. 4-1
SECTION 5 • TESTING ............................................................................................................................ 5-1
APPENDIX A • TIME CHARACTERISTIC CURVES ................................................................................ A-1
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Introduction v
vi BE1-50/51B-214/-215/-223/-225 Introduction 9252000994 Rev P
SECTION 1 • GENERAL INFORMATION
TABLE OF CONTENTS
SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1
Introduction ............................................................................................................................................ 1-1
Features ................................................................................................................................................. 1-1
Advantages ........................................................................................................................................ 1-2
Specifications ......................................................................................................................................... 1-2
Current Sensing Input ........................................................................................................................ 1-2
Time Overcurrent (51) Element .......................................................................................................... 1-2
Instantaneous Overcurrent (50) Element ........................................................................................... 1-5
Burden ................................................................................................................................................ 1-6
Frequency Response ......................................................................................................................... 1-7
Transient Response ........................................................................................................................... 1-7
Harmonic Response ........................................................................................................................... 1-7
Target Indicators ................................................................................................................................ 1-8
Output Contacts ................................................................................................................................. 1-8
Type Tests .......................................................................................................................................... 1-8
Environment ....................................................................................................................................... 1-9
GOST-R Certification ......................................................................................................................... 1-9
Physical .............................................................................................................................................. 1-9
Figures
Figure 1-1. Integrating Reset Characteristic Curve ................................................................................... 1-5
Figure 1-2. Instantaneous Characteristic Curves ...................................................................................... 1-6
Figure 1-3. Burden Characteristics ............................................................................................................ 1-7
Figure 1-4. Harmonic Rejection ................................................................................................................. 1-8
Tables
Table 1-1. GE IAC Relays Suitable For Direct Replacement .................................................................... 1-1
Table 1-2. Time Characteristic Curve Constants with SW3-3 Open (Off) ................................................. 1-3
Table
1-3. Time Characteristic Curve Constants with SW3-3 Closed (On) .............................................. 1-4
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 General Information i
ii BE1-50/51B-214/-215/-223/-225 General Information 9252000994 Rev P
SECTION 1 • GENERAL INFORMATION
Introduction
BE1-50/51B-214/-215/-223/-225 protective relays are direct replacements for General Electric, IAC relays.
The BE1-50/51B-214/-215/-223 has a 5 ampere current sensing input. The BE1-50/51B-225 has a 1
ampere current sensing input. Compatible IAC model numbers are listed in Table 1-1.
Table 1-1. GE IAC Relays Suitable For Direct Replacement
IAC Model Number Curve Type
12IAC51A∗∗∗A
12IAC51B∗∗∗A
12IAC53A∗∗∗A
12IAC53B∗∗∗A
12IAC55A∗∗∗A
12IAC55B∗∗∗A
12IAC66A∗∗A
12IAC66B∗∗A
12IAC77A∗∗∗A
12IAC77B∗∗∗A
Inverse
Inverse with Instantaneous
Very Inverse
Very Inverse with Instantaneous
Short Time
Short Time with Instantaneous
Long Time
Long Time with Instantaneous
Extremely Inverse
Extremely Inverse with Instantaneous
∗ Any digit covering all pickup ranges and 50 Hz or 60 Hz models.
To replace an existing IAC relay, perform the following steps.
1. Select the desired relay settings on your new BE1-50/51B-214/-215/-223/-225 relay.
2. Remove the existing IAC relay.
3. Attach the cover adapter to the existing case.
4. Insert the new relay.
5. Install the new Basler Electric connection plug.
6. Install the new Basler Electric cover.
Basler Electric BE1-50/51B-214/-215/-223/-225 protective relays are self-powered, microprocessorbased, non-directional phase or ground relays that monitor the magnitude of a single-phase ac current to
provide accurate instantaneous and time overcurrent protection for 50 Hz or 60 Hz power systems. Each
model covers 10 popular time characteristics and a wide range of pickup settings.
Features
A wide range of pickup settings and front panel selectable time characteristics permit applications
involving coordination with fuses, reclosers, cold load pickup, motor starting, and fixed time requirements.
Also, an integrating reset function is available to simulate the disk reset of electromechanical relays.
BE1-50/51B-214/-215/-223/-225 overcurrent relays have the following standard features.
• Independent time and instantaneous elements
• A secure method to manually trip the breaker at the relay front panel
• Direct reading front panel controls
• Minimum pickup setting for safety during installation
• Time characteristics extend to a pickup multiple of 40
• Rugged draw-out construction with steel case
• Gravity latching targets retain indication without power
• Built-in accuracy eliminates internal adjustments
• Minimum transient overreach
• Field selectable characteristic curve selection similar to either GE IAC or ABB type curves
• Field selectable instantaneous or integrating reset
• Field selectable 50 or 60 Hz operation
• Field selectable 0.0 or 0.1 second, fixed, instantaneous delay
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 General Information 1-1
Internal switches provide for selecting system operating frequencies of 50 or 60 Hz, instantaneous
element delays of 0.0 or 0.1 second, characteristic curve group selection for either GE IAC or ABB type
curves, and instantaneous or integrating reset characteristics. Switch location and description is provided
in Section 2.
Advantages
BE1-50/51B-214/-215/-223/-225 overcurrent relays have many advantages over other overcurrent relays.
The primary advantages are:
• Time characteristics are defined by equations and graphs
• Field selectable time characteristics
• Very low burden extends the linear range of the CTs
• Self powered from the sensed current
• Continuous automatic calibration
BE1-50/51B-214/-215/-223/-225 overcurrent relays may be tested without removing the relay from the
case. Shorting contacts are provided for all current inputs when the connection plugs or relay chassis is
removed from the relay case.
Specifications
BE1-50/51B-214/-215/-223/-225 overcurrent relays have the following features and capabilities.
Current Sensing Input
BE1-50/51B-214/-215/-223
Continuous Current.................... 14 Aac
One Second Rating ................... 400 Aac
BE1-50/51B-225
Continuous Current.................... 2.8 Aac
One Second Rating ................... 80 Aac
Time Overcurrent (51) Element
Setting the TIME PICKUP control at the minimum pickup setting places the relay in the most sensitive
state and may be used as a safety setting.
BE1-50/51B-214/-215/-223 Pickup
Setting Range ............................ 0.5 to 15.9 Aac
Setting Increment ....................... 0.1 Aac
Accuracy .................................... ±2%, ±25 milliamperes at or above 0.5 ampere setting
BE1-50/51B-225 Pickup
Setting Range ............................ 0.1 to 3.18 Aac
Setting Increment ....................... 0.02 Aac
Accuracy .................................... ±2%, ±5 milliamperes at or above 0.1 ampere setting
Dropout
Dropout occurs at 95% of pickup value.
Timing Range
0.0 to 9.9 seconds in 0.1 second steps.
Timing Accuracy
The timing accuracy is the sum of ±1 cycle, ±2%. This accuracy applies to the range of 1.3 to 40 times tap
and is for a given measured multiple of tap. The measurement of the multiple of tap has an accuracy that
is the sum of ±2%, ±25 milliamperes for the BE1-50/51B-214/-215/-223 and ±2%, ±5 milliamperes for the
BE1-50/51B-225.
1-2 BE1-50/51B-214/-215/-223/-225 General Information 9252000994 Rev P
Timing Accuracy Example (BE1-50/51B-214/-215/-223)
KBD
CM
AD
T
N
T
++=
-
PU setting .................................. 5 amperes
Current Applied .......................... 6.5 amperes
+ Multiple Tolerance .................. 6.655 amperes
– Multiple Tolerance .................. 6.345 amperes
Time Curve ................................ E
Time Dial .................................... 5.0
Minimum time dial
using 6.655 amperes ............... 46.5470 seconds
Maximum time dial
using 61.3968 amperes ........... 61.3968 seconds
Curve time using 6.5 amperes ... 53.1800 seconds
Curve Characteristics
Nine inverse time functions and one fixed time function can be selected by the front-panel Curve switch.
Characteristic curves for the inverse and definite time functions are defined by the following equation.
Where: T
= time to trip in seconds
T
D = time dial setting
M = multiple of pickup setting
A, B, C, N, K = constants for the particular curve
Time characteristic curve constants are listed in Tables 1-2 and 1-3. Constants have been selected to
conform to the characteristics of electromechanical relays over a range of pickup multiples from 1.3 to 40.
Values of the constants are provided for use in computer relay setting software. Timing accuracy is ±1
cycle, ±2 percent of time to trip.
Table 1-2. Time Characteristic Curve Constants with SW3-3 Open (Off)
Curve Type *
BE1 Similar To A B C N K R
Figure
Number †
Constants
S ABB CO-2 A-1 0.2663 0.03393 1.000 1.2969 0.028 0.500
L ABB CO-5 A-2 5.6143 2.18592 1.000 1.000 0.028 15.750
D ABB CO-6 A-3 0.4797 0.21359 1.000 1.5625 0.028 0.875
M ABB CO-7 A-4 0.3022 0.12840 1.000 0.5000 0.028 1.750
I ABB CO-8 A-5 8.9341 0.17966 1.000 2.0938 0.028 9.000
V ABB CO-9 A-6 5.4678 0.10814 1.000 2.0469 0.028 5.500
E ABB CO-11 A-7 7.7624 0.02758 1.000 2.0938 0.028 7.750
B BS142-B ‡ A-8 1.4638 0.00000 1.000 1.0469 0.028 3.250
C BS142-C ‡ A-9 8.2506 0.00000 1.000 2.0469 0.028 8.000
F None § N/A 0.0000 1.00000 0.000 0.0000 0.000 1.000
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 General Information 1-3
Table 1-3. Time Characteristic Curve Constants with SW3-3 Closed (On)
1M
RD
T
2
R
−
=
M = Current in multiples of PICKUP setting during reset
Curve Type *
BE1 Similar To A B C N K R
Figure
Number †
Constants
S GE IAC 55 A-10 0.0286 0.0208 1.000 0.9844 0.028 0.0940
L GE IAC 66 A-11 2.3955 0.00002 1.000 0.3125 0.028 7.8001
D ABB CO-6 A-3 0.4797 0.21359 1.000 1.5625 0.028 0.8750
M ABB CO-7 A-4 0.3022 0.12840 1.000 0.5000 0.028 1.7500
I GE IAC 51 A-12 0.2747 0.1042 1.000 0.4375 0.028 0.8868
V GE IAC 53 A-13 4.4309 0.0991 1.000 1.9531 0.028 5.8231
E GE IAC 77 A-14 4.9883 0.0129 1.000 2.0469 0.028 4.7742
B BS142-B ‡ A-8 1.4636 0.00000 1.000 1.0469 0.028 3.2500
C BS142-C ‡ A-9 8.2506 0.00000 1.000 2.0469 0.028 8.0000
F None § N/A 0.0000 1.00000 0.000 0.0000 0.000 1.0000
Notes for Table
s 1-2 and 1-3
* BE1 Curve Types: S: Short InverseV: Very Inverse
L: Long InverseE: Extremely Inverse
D: Definite TimeB: BS142 Very Inverse
M: Moderately Inverse C: BS142 Extremely Inverse
I: Inverse F: Fixed Time Delay
† Figure numbers refer to the characteristic curves located in Appendix A, Time Characteristic Curves.
‡ Curves B and C are defined in British Standard BS142 and IEC Standard IEC 255-4.
§ Fixed time delay, adjustable from 0.1 to 9.9 seconds.
Integrating Reset
Reset begins when the current drops below 95% of pickup. Integrating reset simulates the disk reset of
electromechanical relays. BE1-50/51B-214/-215/-223/-225 relays provide the integrating reset function
even when input current falls to zero.
Integrating reset characteristics are defined by the following equation and shown in Figure 1-1. Equation
constants are provided in Tables 1-2 or 1-3.
Integrating Reset Equation:
Where:
= Time to reset in seconds
T
R
R = Constant for the particular curve
D = TIME DIAL setting
1-4 BE1-50/51B-214/-215/-223/-225 General Information 9252000994 Rev P
1.0
10.0
100.0
0.000 0.200 0.400 0.600 0.800 1.000 1.200
Multiple of Pickup
xRD (Seconds)
P0046-11
Vertical axis xRD (Seconds) is applicable for all curves and is derived from
multiplying the constant R for the curve selected times D (the Time Dial setting).
Figure 1-1. Integrating Reset Characteristic Curve
Instantaneous Overcurrent (50) Element
Setting the INST PICKUP control to the minimum pickup setting places the relay in the most sensitive
state and may be used as a safety setting.
BE1-50/51B-214/-215/-223 Pickup
Setting Range ............................ 1 to 99 Aac
Setting Increment....................... 1 Aac
Accuracy .................................... ±2%, ±25 milliamperes at or above 1.0 ampere setting
BE1-50/51B-225 Pickup
Setting Range ............................ 0.2 to 19.8 Aac
Setting Increment....................... 0.2 Aac
Accuracy .................................... ±2%, ±2 milliamperes at or above 0.2 ampere setting
Dropout
Dropout occurs at 95% of pickup value.
Curve Characteristics
Instantaneous characteristic curves are similar to standard electromechanical instantaneous units.
However, the time to trip for applications where the initial current through the relay is less than 0.4
ampere (5 ampere relay) or 0.08 ampere (1 ampere relay) may be slightly longer. This may occur on a
very lightly loaded circuit or when the relay is providing ground protection and is connected to measure
neutral current. Figure 1-2 shows the instantaneous characteristic curves for maximum time to trip.
An additional fixed delay of 0.1 second may be added with internal switch SW3-2. This delay applies to
both phase and ground applications. Closing switch SW3-2 provides an additional delay of 0.1 second.
Section 2 illustrates the location of SW3.
The instantaneous element in BE1-50/51B-214/-215/-223/-225 relays may be set lower than the
instantaneous element in IAC relays and still have the same reach. This is because the BE1-50/51B-214/215/-223/-225 instantaneous element effectively eliminates the fault current transient overreach
components. When calculating BE1-50/51B-214/-215/-223/-225 relay instantaneous element settings,
calculate the symmetrical value without any adder for transient overreach.
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 General Information 1-5
Figure 1-2. Instantaneous Characteristic Curves
Burden
Burden is non-linear. Figure 1-3 illustrates the device burden.
BE1-50/51B-214/-215/-223
At 0.5 amperes .......................... 4.8 Ω
At 5.0 amperes .......................... 0.2 Ω
BE1-50/51B-225
At 0.1 ampere ............................ 120 Ω
At 1.0 ampere ............................ 5 Ω
1-6 BE1-50/51B-214/-215/-223/-225 General Information 9252000994 Rev P
Figure 1-3. Burden Characteristics
Frequency Response
A change of ±5 Hz from the nominal 50/60 Hz current causes <0.5% change in the current required for
pickup.
Transient Response
<10% overreach with system time constants up to 40 ms.
Harmonic Response
Figure 1-4 shows that a relay set for 1 ampere pickup would pick up at 0.96 amperes with a current
containing 40% seventh harmonic. This corresponds to a 10:1 rejection ratio. Other conditions may be
evaluated in the same manner.
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 General Information 1-7
Figure 1-4. Harmonic Rejection
Target Indicators
Gravity latched, manually reset targets indicate that current of 0.2 amperes or greater was present in the
trip circuit. Target coil resistance is less than 0.1 ohms and operate time is less than one millisecond. See
Output Contacts for maximum current rating.
Output Contacts
Output contacts are surge protected and rated as follows.
Resistive Ratings
120/240 Vac ............................... Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3
amperes continuously, and break 5 amperes.
125/250 Vdc ............................... Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3
amperes continuously, and break 0.3 ampere.
Inductive Ratings
120/240 Vac, 125/250 Vdc ........ Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2
minutes, 3 amperes continuously, and break 0.3 ampere. (L/R = 0.04).
Type Tests
Isolation ..................................... IEEE C37.90-2005
Transient Surge ......................... IEEE C37.90.1-2004
Radiated Interference ................ IEEE C37.90.2-2004
Electrostatic Discharge .............. IEEE C37.90.3-2006
Vibration ..................................... IEC 255-21-1
Shock and Bump ....................... IEC 255-21-2
1-8 BE1-50/51B-214/-215/-223/-225 General Information 9252000994 Rev P
Environment
Operating Temperature ............. –40 to 70°C (–40 to 158°F)
Storage Temperature ................ –50 to 70°C (–58 to 158°F)
GOST-R Certification
GOST-R certified per the relevant standards of Gosstandart of Russia.
Physical
Weight ........................................ 6.1 lb (2.77 kg)
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 General Information 1-9
1-10 BE1-50/51B-214/-215/-223/-225 General Information 9252000994 Rev P
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