Page 1
INSTRUCTION MANUAL
FOR
BE1-50/51B
OVERCURRENT RELAY
Part Numbers
9252000121
9252000123
Publication: 9252000893
Revision: C 12/11
Page 2
Page 3
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
Page 4
A-2
Page 5
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
Page 6
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
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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
Page 8
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
Page 9
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
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vi BE1-50/51B-214/-215/-223/-225 Introduction 9252000994 Rev P
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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
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ii BE1-50/51B-214/-215/-223/-225 General Information 9252000994 Rev P
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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
Page 14
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
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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
Page 16
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
Page 17
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
Page 18
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
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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
Page 20
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
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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
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SECTION 2 • CONTROLS AND INDICATORS
TABLE OF CONTENTS
SECTION 2 • CONTROLS AND INDICATORS ........................................................................................ 2-1
Introduction ............................................................................................................................................ 2-1
Figures
Figure 2-1. Front Panel Controls and Indicators ....................................................................................... 2-1
Figure 2-2. Location of SW3
Tables
Table 2-1. BE1-50/51B-214/-215/-223/-225 Controls and Indicators (Refer to Figures 2-1 and 2-2) ....... 2-3
...................................................................................................................... 2-2
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Controls and Indicators i
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ii BE1-50/51B-214/-215/-223/-225 Controls and Indicators 9252000994 Rev P
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SECTION 2 • CONTROLS AND INDICATORS
Introduction
Figure 2-1 illustrates the front panel controls and indicators of the BE1-50/51B-214/-215/-223/-225. Figure
2-2 illustrates the location of switch SW3. Both illustrations have lettered call-outs that correspond to the
control and indicator descriptions provided in Table 2-1.
Figure 2-1. Front Panel Controls and Indicators
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Controls and Indicators 2-1
Page 26
Figure 2-2. Location of SW3
P0053-50
SW3
2-2 BE1-50/51B-214/-215/-223/-225 Controls and Indicators 9252000994 Rev P
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Table 2-1. BE1-50/51B-214/-215/-223/-225 Controls and Indicators (Refer to Figures 2-1 and 2-2)
Locator Control or Indicator Function
A INST MANUAL TRIP
Test Points
B INST PICKUP
Selectors
C Targets
D TIME PICKUP
Selectors
E CURVE Selector
F TIME DIAL Selectors
G TIME MANUAL TRIP
Test Points
When shorted, the test points (jacks) provide a secure means to
manually trip the controlled breaker. Jacks accept a standard 0.08
inch diameter phone tip plug.
Two switches (TENS and UNITS) to select pickup current in
amperes. Changing switch selectors while the relay is in service
may cause tripping.
Red target indicators latch when the trip circuit current is greater
than 0.2 amperes. One target each for TIME and INST.
Two switches (UNITS and TENTHS) to select pickup current in
amperes. Changing switch selectors while the relay is in service
may cause tripping.
Ten position selector switch to select one of nine inverse functions
or one fixed time function.
Two selector switches (UNITS and TENTHS) to select the desired
characteristic curve. A setting of 0.0 results in instantaneous
operation without any intentional delay. A setting of 9.9
corresponds to the typical time provided by an electromechanical
relay at its maximum dial setting.
When shorted, the test points provide a secure means to manually
trip the controlled breaker. Jacks accept a standard 0.08 inch
diameter phone tip plug.
H ACTIVE/PICKUP LED
I Target RESET Button
SW3 * SW3-1
SW3-2
SW3-3
This bicolor LED indicates the level of current sensed by the relay.
A green LED indicates that the relay is active but not picked up.
The LED changes to red when the sensed current exceeds the
time overcurrent pickup setting. The LED changes from red to
green when the sensed current decreases below 95% of the time
overcurrent pickup setting.
Note: A minimum of 0.5 A (5A units) or 0.1 A (1A units) is required
to light the LED. The LED may not turn green (active) before
turning red (picked up) at the 0.5 A pickup setting on 5A units or
0.1 A pickup setting on 1A units.
Linkage extends through back of front cover to reset both gravity
latched target indicators.
SW3-1 selects the system operating frequency. SW3-1 open
(OFF) selects 60 Hz operation. SW3-1 closed (ON) selects 50 Hz
operation.
SW3-2 provides additional time delay for the instantaneous
element. Closing switch SW3-2 (ON) provides an additional
instantaneous delay of 0.1 second.
SW3-3 provides selection of GE IAC type curves or ABB type
curves. Closing switch SW3-3 (ON) selects GE IAC type curves
(refer to Table 1-3). Opening switch SW3-3 (OFF) selects ABB
type curves (refer to Table 1-2).
SW3-4
* NOTE: In Revision J and previous relays, switch SW3 is designated as SW8.
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Controls and Indicators 2-3
SW3-4 provides selection of either instantaneous or integrating
reset characteristics. Closing SW3-4 (ON) selects integrating reset
characteristics. Opening SW3-4 (OFF) selects instantaneous reset
characteristics.
Page 28
2-4 BE1-50/51B-214/-215/-223/-225 Controls and Indicators 9252000994 Rev P
Page 29
SECTION 3 • FUNCTIONAL DESCRIPTION
TABLE OF CONTENTS
SECTION 3 • FUNCTIONAL DESCRIPTION ........................................................................................... 3-1
General .................................................................................................................................................. 3-1
Functional Description ........................................................................................................................... 3-1
Sensing Input ..................................................................................................................................... 3-1
Power Supply ..................................................................................................................................... 3-1
Instantaneous Signal .......................................................................................................................... 3-1
Time Signal ........................................................................................................................................ 3-1
Microprocessor ................................................................................................................................... 3-1
Power-Off Sensing ............................................................................................................................. 3-1
Outputs ............................................................................................................................................... 3-2
Figures
Figure 3-1. Functional Block Diagram, BE1-50/51B-214/-225 .................................................................. 3-2
Figure 3-2. Functional Block Diagram, BE1-50/51B-215
Figure 3-3. Functional Block Diagram, BE1-50/51B-223
.......................................................................... 3-2
.......................................................................... 3-3
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Functional Description i
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ii BE1-50/51B-214/-215/-223/-225 Functional Description 9252000994 Rev P
Page 31
SECTION 3 • FUNCTIONAL DESCRIPTION
General
BE1-50/51B-214/-215/-223/-225 Overcurrent Relays are microprocessor based non-directional relays that
measure ac current to provide secure and reliable instantaneous and time overcurrent protection for
power systems.
Functional Description
Sensing Input
Single phase ac current from system current transformers (CT) is brought into the Overcurrent Relay at
terminals 5 and 6. Refer to Figure 3-1 to follow the functional description for the BE1-214/-225. Refer to
Figure 3-2 to follow the functional description for the BE1-50/51B-215. Refer to Figure 3-3 to follow the
functional description for the BE1-50/51B-223.The input current is applied to internal power and signal
CTs.
Power Supply
Current from the power CT is rectified, filtered, and supplied to all relay internal circuitry for operating
power. A precision +5 Vdc supply also serves as a reference for automatic calibration.
Instantaneous Signal
Current from the signal CT is rectified and applied to the instantaneous scaling resistors controlled by the
INST PICKUP selector switches. The analog voltage of the instantaneous input signal developed across
the scaling resistors is filtered and applied to the multiplexor (MUX).
Time Signal
Current from the signal CT is also rectified and applied to the time scaling resistors controlled by the TIME
PICKUP selector switches. The analog voltage of the time input signal is also filtered and applied to the
multiplexor.
Microprocessor
Operating power from the power supply is applied to the microprocessor supervisor circuit. When the
microprocessor is active and executing code, the ACTIVE/PICKUP LED is green. When the input current
falls below an acceptable level, the supervisor circuit interrupts the microprocessor, halts further
operation, and turns OFF the ACTIVE/PICKUP LED. A microprocessor watchdog feature resets the
microprocessor program when the program flow is interrupted.
Information from the TIME DIAL selector switches, the TIME CURVE selector switch, and the 50/60 Hz,
INST DELAY, and RESET CHAR switches is also applied to the microprocessor. The microprocessor
uses these inputs to set the operating parameters.
When the microprocessor is ready for analog information from the multiplexor, microprocessor control
signals cause the multiplexor to route the desired input through to the output. The output is converted
from an analog value to a digital value and applied to the microprocessor.
The microprocessor performs the program operations based on the inputs and the internal software
program. When the sensed current exceeds the TIME PICKUP setting, the ACTIVE/PICKUP LED turns
from green to red. TIME contacts (51) are closed in accordance with the time characteristic equation. If
the sensed current exceeds the INST PICKUP setting, the INST contacts (50) are closed.
Power-Off Sensing
Power-off sensing circuits measure the voltage across a capacitor at power-down and at power-up. These
circuits determine how long power has been removed based on the difference voltage and the circuit RC
time constant. This provides information for the integrating reset function even when power has been
entirely removed.
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Functional Description 3-1
Page 32
Outputs
Instantaneous and Timed
System circuit breakers controlled by the output contacts can be manually tripped by applying a short
across the TIME or INST MANUAL TRIP front panel test points. Current flow in the trip circuit is indicated
by the operation of the target. The targets will not operate without adequate operating power for the relay.
WARNING!
Trip circuit voltage is present at the front panel test points. When shorting the
test points, use insulated jumpers to avoid contact with these voltages.
Figure 3-1. Functional Block Diagram, BE1-50/51B-214/-225
Figure 3-2. Functional Block Diagram, BE1-50/51B-215
3-2 BE1-50/51B-214/-215/-223/-225 Functional Description 9252000994 Rev P
Page 33
Figure 3-3. Functional Block Diagram, BE1-50/51B-223
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Functional Description 3-3
Page 34
3-4 BE1-50/51B-214/-215/-223/-225 Functional Description 9252000994 Rev P
Page 35
SECTION 4 • INSTALLATION
TABLE OF CONTENTS
SECTION 4 • INSTALLATION .................................................................................................................. 4-1
General .................................................................................................................................................. 4-1
Factory Settings ..................................................................................................................................... 4-1
Installation .............................................................................................................................................. 4-1
Application Coordination ........................................................................................................................ 4-1
Connections ........................................................................................................................................... 4-3
Maintenance........................................................................................................................................... 4-6
Storage ................................................................................................................................................... 4-6
Figures
Figure 4-1. Coordination Timing Diagram ................................................................................................. 4-2
Figure 4-2. AC Input Connections
Figure 4-3. DC Control Connections, BE1-50/51B-214/-225
Figure 4-4. DC Control Connections, BE1-50/51B-215
Figure 4-5. DC Control Connections, BE1-50/51B-223
............................................................................................................. 4-3
.................................................................... 4-4
............................................................................. 4-5
............................................................................. 4-6
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Installation i
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ii BE1-50/51B-214/-215/-223/-225 Installation 9252000994 Rev P
Page 37
SECTION 4 • INSTALLATION
KBD
CM
AD
T
N
Trip
++
−
=
( )
0280202758.0
110
276247
09382
.
.
.
+×+
−
×
=
028005516.0
110806124
524815
.
.
.
++
−
=
seconds 0.209=
General
When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons to
prevent damage during transit. Immediately upon receipt of a relay, check the model and part number
against the requisition and packing list to see that they agree. Visually inspect the relay for damage that
may have occurred during shipment. If there is evidence of damage, immediately file a claim with the
carrier and notify the Regional Sales Office, or contact the Sales Representative at Basler Electric,
Highland, Illinois.
Proper operation of the relay may be confirmed by performing the operational test procedure of Section 5.
If the relay won't be installed immediately, store the relay in its original shipping carton in a moisture and
dust-free environment.
Factory Settings
Factory settings for the internal switches of SW3 are as follows:
• SW3-1 — OFF (60 hertz operation).
• SW3-2 — OFF (0.0 additional fixed delay for the instantaneous element).
• SW3-3 — ON (GE IAC type characteristic curves).
• SW3-4 — ON (Integrating reset characteristics).
Installation
Select the desired relay settings before putting the relay into service. Changing pickup current settings
while the relay is in service may cause tripping. Perform the following procedures to install the BE150/51B-214/-215/-223/-225 relay.
• Select the desired relay settings on your new BE1-50/51B-214/-215/-223/-225 relay.
• Remove the existing IAC relay.
• Use the four screws provided and attach the cover adapter to the existing case.
• Insert the new relay and close the cradle latches locking the relay into the case.
• Install the new Basler Electric connection plug.
• To install the cover, position the interlocking bracket at the top of the new Basler Electric cover
into the mating receptacle at the top of the cover adapter plate. Secure the captive fastener at the
bottom of the cover.
Application Coordination
In a typical application coordination scheme, a BE1-50/51B-214/-215/-223/-225 is being used to provide
primary protection for a radial distribution feeder. An electromechanical overcurrent relay with extremely
inverse timing provides protection for the transformer and bus. To improve coordination with the
electromechanical relay, the BE1 relay with integrating reset characteristic has the time characteristic
curve E (extremely inverse) selected (SW3-3 set to OFF) and the TIME DIAL set to 2.0. The feeder
reclosing relay is set for two reclose attempts at 3 and 15 seconds after the initial trip. If a permanent fault
occurs (magnitude ten times pickup), calculate the feeder breaker trip time for each of the three
operations. Refer to Section 1 for characteristic curve constants.
From the time characteristic curve equation.
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Installation 4-1
Page 38
From the reset characteristic curve equation.
1M
RD
T
2
Reset
−
=
seconds 15.5
10
27.75
2
−=
−
×
=
( )( )
Rewind Full
Time RewindTrip Full
T
Occurence This
Trip
=
( )( )
15.5
30.209
T
B
=
seconds 0.040TB=
( )( )
15.5
11.960.209
TC=
seconds 0.161TC=
M = 0 if current goes to zero.
Negative result indicates reset time.
Results: Full trip = 0.209 seconds and full reset = 15.5 seconds if current goes to zero.
In Figure 4-1,
T
= 0.209 seconds (relay was at reset).
A
T
= value < TA because rewind has not gone to zero.
B
T
= value < TA because rewind has not gone to zero.
C
Figure 4-1. Coordination Timing Diagram
Equation for time to trip during rewind (before relay is reset).
Second Operation
Third Operation
4-2 BE1-50/51B-214/-215/-223/-225 Installation 9252000994 Rev P
Page 39
Connections
Typical ac input connections for the BE1-50/51B-214/-215/-223/-225 are shown in Figure 4-2. Typical dc
control connections for the BE1-50/51B-214/-225 are shown in Figure 4-3. Typical dc control connections
for the BE1-50/51B-215 are shown in Figure 4-4. Typical dc control connections for the BE1-50/51B-223
are shown in Figure 4-5. Refer to the block diagrams in Section 3 for relay internal connections.
Figure 4-2. AC Input Connections
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Installation 4-3
Page 40
Figure 4-3. DC Control Connections, BE1-50/51B-214/-225
4-4 BE1-50/51B-214/-215/-223/-225 Installation 9252000994 Rev P
Page 41
Figure 4-4. DC Control Connections, BE1-50/51B-215
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Installation 4-5
Page 42
P0061-19
Figure 4-5. DC Control Connections, BE1-50/51B-223
Maintenance
BE1-50/51B-214/-215/-223/-225 overcurrent relays require no preventive maintenance. However, periodic
checks should be performed according to scheduled practices. A recommended periodic test is provided
in Section 5. If the relay fails to function properly, contact the Technical Sales Support Department of
Basler Electric.
Storage
This device contains long-life aluminum electrolytic capacitors. For devices that are not in service (spares
in storage), the life of these capacitors can be maximized by energizing the device for 30 minutes once
per year.
4-6 BE1-50/51B-214/-215/-223/-225 Installation 9252000994 Rev P
Page 43
SECTION 5 • TESTING
TABLE OF CONTENTS
SECTION 5 • TESTING ............................................................................................................................ 5-1
General .................................................................................................................................................. 5-1
Dielectric Test ........................................................................................................................................ 5-1
Operational Test Procedure ................................................................................................................... 5-1
Test Equipment Required................................................................................................................... 5-1
Test Procedure, Models BE1-50/51B-214/-215/-223 (Five Ampere Sensing Input) .......................... 5-4
Test Procedure, Model BE1-50/51B-225 (One Ampere Sensing Input) ............................................ 5-6
Setting the Relay .................................................................................................................................... 5-8
Periodic Tests ........................................................................................................................................ 5-8
General ............................................................................................................................................... 5-8
Periodic Test ...................................................................................................................................... 5-9
Figures
Figure 5-1. Pickup and Timing Test Setup, BE1-50/51B-214/-225 ........................................................... 5-1
Figure 5-2. Target Operational Test Setup, BE1-50/51B-214/-225
Figure 5-3. Pickup and Timing Test Setup, BE1-50/51B-215
Figure 5-4. Target Operational Test Setup, BE1-50/51B-215
Figure 5-3. Pickup and Timing Test Setup, BE1-50/51B-223
Figure 5-4. Target Operational Test Setup, BE1-50/51B-223
........................................................... 5-2
................................................................... 5-2
................................................................... 5-3
................................................................... 5-3
................................................................... 5-4
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Testing i
Page 44
ii BE1-50/51B-214/-215/-223/-225 Testing 9252000994 Rev P
Page 45
SECTION 5 • TESTING
BE1-50/51B-214/-225
6 5 3 1
TIMEINST
2
CURRENT
SOURCE
INPUT
STOP
TIMER
START
AMPS
TEST SET
P0059-08
General
Dielectric testing, operational testing, and periodic testing are described in the following paragraphs.
Dielectric Test
In accordance with IEC 255-5 and IEEE C37.90-2005, one-minute dielectric (high potential) tests may be
performed as follows:
• All circuits to ground: 2,828 Vdc or 2,000 Vac
• Input to output circuits: 2,828 Vdc or 2,000 Vac
Output contacts are surge protected.
Operational Test Procedure
The following procedures verify operation of relays BE1-50/51B-214/-215/-223 (5 ampere model) and
BE1-50/51B-225 (1 ampere model). The test setup of Figures 5-1 and 5-2 (BE1-50/51B-214/-225) are
intended primarily as an illustration of the principles involved. The BE1-50/51B-215 is illustrated in Figures
5-3 and 5-4. The BE1-50/51B-223 is illustrated in Figures 5-5 and 5-6. Other test setups known to be
capable of testing with the stated and implied tolerances (including equipment specifically designed for
testing relays) may be used.
Test Equipment Required
• Current source with a range from 0 to 20 Aac (sensing input current)
• AC or DC voltage source (target operation)
• Timer or counter
CAUTION
To ensure proper timing during testing, before each test, remove the current
from the unit for R times D seconds (refer to Section 1, Specifications, Time
Reset for R and D definitions).
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Testing 5-1
Figure 5-1. Pickup and Timing Test Setup, BE1-50/51B-214/-225
Page 46
BE1-50/51B-214/-225
6 5
CURRENT
SOURCE
INPUT
STOP
TIMER
START
AMPS
TEST SET
23
INST
1
TIME
P0059-09
R
AC or DC
Voltage
Source
(V)
1 A Target Current
R = V/1
Rwatts = 1*V
BE1-50/51B-215
6 5 10 1
TIMEINST
2
CURRENT
SOURCE
INPUT
STOP
TIMER
START
AMPS
TEST SET
P0059-05
9
Figure 5-2. Target Operational Test Setup, BE1-50/51B-214/-225
Figure 5-3. Pickup and Timing Test Setup, BE1-50/51B-215
5-2 BE1-50/51B-214/-215/-223/-225 Testing 9252000994 Rev P
Page 47
BE1-50/51B-215
6 5
CURRENT
SOURCE
INPUT
STOP
TIMER
START
AMPS
TEST SET
2
10
INST
1
TIME
P0059-06
R
AC or DC
Voltage
Source
(V)
1 A Target Current
R = V/1
Rwatts = 1*V
9
BE1-50/51B-223
6 5 10 1
TIMEINST
2
CURRENT
SOURCE
INPUT
STOP
TIMER
START
AMPS
TEST SET
P0061-20
9
Figure 5-4. Target Operational Test Setup, BE1-50/51B-215
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Testing 5-3
Figure 5-5. Pickup and Timing Test Setup, BE1-50/51B-223
Page 48
Figure 5-6. Target Operational Test Setup, BE1-50/51B-223
BE1-50/51B-223
6 5 10 1
TIMEINST
2
CURRENT
SOURCE
INPUT
STOP
TIMER
START
AMPS
TEST SET
P0061-21
9
R
AC or DC
Voltage
Source
(V)
1 A Target Current
R = V/1
Rwatts = 1*V
When testing TIME overcurrent functions, INST PICKUP settings of 00 will
affect the calibration of the TIME functions. TIME PICKUP settings of 00 also
affect INST functions.
Test Procedure, Models BE1-50/51B-214/-215/-223 (Five Ampere Sensing Input)
Time Pickup Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-1 (BE1-50/51B-214), Figure 5-3 (BE1-50/51B-215), or
Figure 5-5 (BE1-50/51B-223).
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON and SW3-4 to ON.
• Set TIME DIAL to 0.0.
• Set CURVE to S
• Set TIME PICKUP to 0.5.
• Set INST PICKUP to 90.
Step 1. Slowly increase current to terminals 5 and 6. PICKUP LED should turn RED at a maximum input
current of 0.550 ampere.
Step 2. Decrease input current until PICKUP LED turns GREEN then OFF.
Step 3. Set TIME PICKUP to 2.2.
Step 4. Slowly increase current to terminals 5 and 6. PICKUP LED should change from GREEN to RED
at an input current of 2.131 to 2.269 amperes.
Step 5. Decrease input current until PICKUP LED turns OFF.
5-4 BE1-50/51B-214/-215/-223/-225 Testing 9252000994 Rev P
NOTE
Page 49
INST Pickup Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-1 (BE1-50/51B-214), Figure 5-3 (BE1-50/51B-215), or
Figure 5-5 (BE1-50/51B-223).
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 0.0.
• Set CURVE to S
• Set TIME PICKUP to 15.9.
• Set INST PICKUP to 01.
Step 1. Slowly increase current to terminals 5 and 6. INST contacts should close at an input current of
0.955 to 1.045 amperes.
Step 2. Decrease input current until INST output contacts open.
Step 3. Set INST PICKUP to 08.
Step 4. Slowly increase current to terminals 5 and 6. INST contacts should close at an input current of
7.815 to 8.185 amperes.
Step 5. Decrease input current until INST output contacts open.
Time Dial Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-1 (BE1-50/51B-214), Figure 5-3 (BE1-50/51B-215), or
Figure 5-5 (BE1-50/51B-223).
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 4.5.
• Set CURVE to S
• Set TIME PICKUP to 1.0.
• Set INST PICKUP to 90.
Step 1. Prepare to apply 1.5 amperes input current to terminals 5 and 6 and record the elapsed time from
when current is applied until TIME output contacts close.
Step 2. Apply the current (step from 0 to 1.5 amperes) and record the elapsed time. Elapsed time should
be 0.345 to 0.424 seconds. (This tolerance is greater than ±2% because it is the accumulation of
both pickup and timing tolerances.)
Step 3. Remove input current.
Target Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-2 (BE1-50/51B-214), Figure 5-4 (BE1-50/51B-215), or
Figure 5-6 (BE1-50/51B-223).
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 4.5.
• Set CURVE to S
• Set TIME PICKUP to 1.0.
• Set INST PICKUP to 90.
Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 5 amperes input current to terminals 5 and 6. Check that the TIME target operates.
Step 3. Remove input current and reset target.
Step 4. Set TIME PICKUP to 15.9 and set INST PICKUP to 01.
Step 5. Set voltage source to provide a target current of 1.0 ampere.
Step 6. Apply 5 amperes input current to terminals 5 and 6. Check that the INST target operates.
Step 7. Remove input current and reset targets.
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Testing 5-5
Page 50
Manual Trip Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-2 (BE1-50/51B-214), Figure 5-4 (BE1-50/51B-215), or
Figure 5-6 (BE1-50/51B-223).
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 4.5.
• Set CURVE to S
• Set TIME PICKUP to 1.0.
• Set INST PICKUP to 01.
WARNING!
Trip circuit voltage is present at the front panel test points. When shorting the
test points, use insulated jumpers to avoid contact with these voltages.
Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 0.9 ampere input current to terminals 5 and 6. (0.9 ampere provides input power but stays
below pickup.)
Step 3. Connect a jumper between TIME MANUAL TRIP test points. Check that TIME target operates.
Step 4. Connect a jumper between INST MANUAL TRIP test points. Check that INST target operates.
Step 5. Reset targets.
Integrating Reset Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-1 (BE1-50/51B-214), Figure 5-3 (BE1-50/51B-215), or
Figure 5-5 (BE1-50/51B-223).
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 9.9.
• Set CURVE to V.
• Set TIME PICKUP to 1.0.
• Set INST PICKUP to 90.
Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Read all of Step 3 before beginning Step 3.
Step 3. Apply 4.0 amperes input current to terminals 5 and 6. After the unit trips, remove the input current
for 29 ±0.25 seconds, then reapply the 4.0 amperes input current. Record the elapsed time from
the re-application of input current to the output retrip.
Result: Elapsed time should be 2.08 ±0.4 seconds.
Test Procedure, Model BE1-50/51B-225 (One Ampere Sensing Input)
Time Pickup Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-1.
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON and SW3-4 to ON.
• Set TIME DIAL to 0.0.
• Set CURVE to S
• Set TIME PICKUP to 0.5.
• Set INST PICKUP to 18.0.
Step 1. Slowly increase current to terminals 5 and 6. PICKUP LED should turn RED at a maximum input
current of 0.110 ampere.
5-6 BE1-50/51B-214/-215/-223/-225 Testing 9252000994 Rev P
Page 51
Step 2. Decrease input current until PICKUP LED turns GREEN then OFF.
Step 3. Set TIME PICKUP to 0.44.
Step 4. Slowly increase current to terminals 5 and 6. PICKUP LED should change from GREEN to RED
at an input current of 0.426 to 0.454 amperes.
Step 5. Decrease input current until PICKUP LED turns OFF.
INST Pickup Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-1.
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 0.0.
• Set CURVE to S
• Set TIME PICKUP to 3.18.
• Set INST PICKUP to 0.2
Step 1. Slowly increase current to terminals 5 and 6. INST contacts should close at an input current of
0.191 to 0.209 amperes.
Step 2. Decrease input current until INST output contacts open.
Step 3. Set INST PICKUP to 08.
Step 4. Slowly increase current to terminals 5 and 6. INST contacts should close at an input current of
1.563 to 1.637 amperes.
Step 5. Decrease input current until INST output contacts open.
Time Dial Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-1.
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 4.5.
• Set CURVE to S
• Set TIME PICKUP to 0.2.
• Set INST PICKUP to 18.0.
Step 1. Prepare to apply 0.3 amperes input current to terminals 5 and 6 and record the elapsed time from
when current is applied until TIME output contacts close.
Step 2. Apply the current (step from 0 to 0.3 amperes) and record the elapsed time. Elapsed time should
be 0.345 to 0.424 seconds. (This tolerance is greater than ±2% because it is the accumulation
of both pickup and timing tolerances.)
Step 3. Remove input current.
Target Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-2.
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 4.5.
• Set CURVE to S
• Set TIME PICKUP to 0.2.
• Set INST PICKUP to 19.8.
Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 1 ampere input current to terminals 5 and 6. Check that the TIME target operates.
Step 3. Remove input current and reset target.
Step 4. Set TIME PICKUP to 3.18 and set INST PICKUP to 0.2.
Step 5. Set voltage source to provide a target current of 1.0 ampere.
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Testing 5-7
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Step 6. Apply 1 ampere input current to terminals 5 and 6. Check that the INST target operates.
Step 7. Remove input current and reset target.
Manual Trip Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-2.
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 4.5.
• Set CURVE to S
• Set TIME PICKUP to 0.2.
• Set INST PICKUP to 0.2.
WARNING!
Trip circuit voltage is present at the front panel test points. When shorting the
test points, use insulated jumpers to avoid contact with these voltages.
Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 0.15 ampere input current to terminals 5 and 6. (0.15 ampere provides input power but
stays below pickup.)
Step 3. Connect a jumper between TIME MANUAL TRIP test points. Check that TIME target operates.
Step 4. Connect a jumper between INST MANUAL TRIP test points. Check that INST target operates.
Step 5. Reset targets.
Integrating Reset Test
Perform preliminary setup:
• Connect test setup as shown in Figure 5-1.
• Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
• Set TIME DIAL to 4.5.
• Set CURVE to I.
• Set TIME PICKUP to 0.20.
• Set INST PICKUP to 18.0.
Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Read all of Step 3 before beginning Step 3.
Step 3. Apply 0.8 amperes input current to terminals 5 and 6. After the unit trips, remove the input current
for 20 ±0.25 seconds, then reapply the 0.8 amperes input current. Record the elapsed time from
the re-application of input current to the output retrip.
Result: Elapsed time should be 1.55 ±0.3 seconds.
Setting the Relay
Select the desired relay settings before putting the relay into service. Changing pickup current settings
while the relay is in service may cause tripping.
Periodic Tests
General
All relays should be tested periodically to identify and correct any problems that are found.
Single phase relays such as the BE1-50/51B-214/-215/-223/-225 are normally used in groups of four
(three phase and ground) on the protected circuit. This relay scheme allows each unit to be withdrawn
one at a time for testing purposes without losing protection. Only three are required at any one time to
5-8 BE1-50/51B-214/-215/-223/-225 Testing 9252000994 Rev P
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sense all types of faults on a grounded wye system. Refer to Figures 5-1 through 5-4 for recommended
test setups.
Periodic Test
Periodic testing should consist of the following procedures.
Step 1. Verify that the instantaneous pickup is within ±2% of the value set on the dials. Pickup occurs
when the INST output contacts close.
Step 2. Verify that the time pickup is within ±2% of the value set on the dials. Pickup occurs when the
LED turns GREEN then RED.
Step 3. Verify that the time to trip for the curve and time dial settings at a multiple of six is the same as
the time given on the characteristic curve. Refer to Section 1 for the characteristics curves.
Step 4. Verify that the time to trip for the instantaneous element at a pickup multiple of 2 is not greater
than the
instantaneous characteristic curve.
Step 5. Verify that the targets operate with one ac ampere of trip current in the trip circuits and that they
can be reset using the RESET BUTTON.
time given on the instantaneous characteristic curve. Refer to Section 1 for the
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Testing 5-9
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5-10 BE1-50/51B-214/-215/-223/-225 Testing 9252000994 Rev P
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APPENDIX A • TIME CHARACTERISTIC CURVES
TABLE OF CONTENTS
APPENDIX A • TIME CHARACTERISTIC CURVES ................................................................................ A-1
Time Characteristic Curves .................................................................................................................... A-1
Figures
Figure A-1. Time Characteristic Curve, S-Short Inverse (SW3-3 OFF, Similar to ABB CO-2) ................. A-1
Figure A-2. Time Characteristic Curve, L-Long Inverse (SW3-3 OFF, Similar to ABB CO-5)
Figure A-3. Time Characteristic Curve, D-Definite Time (Similar to ABB CO-6)
Figure A-4. Time Characteristic Curve, M-Moderately Inverse (Similar to ABB CO-7)
Figure A-5. Time Characteristic Curve, I-Inverse (SW3-3 OFF, Similar to ABB CO-8)
Figure A-6. Time Characteristic Curve, V-Very Inverse (SW3-3 OFF, Similar to ABB CO-9)
Figure A-7. Time Characteristic Curve, E-Extremely Inverse (SW3-3 OFF, Similar to ABB CO-11)
Figure A-8. Time Characteristic Curve, BS142-B (BS142 Very Inverse)
Figure A-9. Time Characteristic Curve, BS142-C (BS142 Extremely Inverse)
Figure A-10. Time Characteristic Curve, S2-Short Inverse (SW3-3 ON, Similar to GE IAC 55)
Figure A-11. Time Characteristic Curve, L2-Long Inverse (SW3-3 ON, Similar to GE IAC 66)
Figure A-12. Time Characteristic Curve, I2-Inverse (SW3-3 ON, Similar to GE IAC 51)
Figure A-13. Time Characteristic Curve, V2-Very Inverse (SW3-3 ON, Similar to GE IAC 53)
Figure A-14. Time Characteristic Curve, E2-Extremely Inverse (SW3-3 ON, Similar to GE IAC 77)
.................. A-2
...................................... A-3
............................. A-4
........................... A-5
................. A-6
........ A-7
.................................................. A-8
......................................... A-9
............. A-10
.............. A-11
........................ A-12
.............. A-13
..... A-14
9252000994 Rev P BE1-50/51B-214/-215/-223/-225 Time Characteristic Curves i
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ii BE1-50/51B-214/-215/-223/-225 Time Characteristic Curves 9252000994 Rev P
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APPENDIX A • TIME CHARACTERISTIC CURVES
Time Characteristic Curves
Figures A-1 through A-14 illustrate the time characteristic curves that are programmed into the nonvolatile
memory of this relay.
Figure A-1. Time Characteristic Curve, S-Short Inverse
(SW3-3 OFF, Similar to ABB CO-2)
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Figure A-2. Time Characteristic Curve, L-Long Inverse
(SW3-3 OFF, Similar to ABB CO-5)
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Figure A-3. Time Characteristic Curve, D-Definite Time
(Similar to ABB CO-6)
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Figure A-4. Time Characteristic Curve, M-Moderately Inverse
(Similar to ABB CO-7)
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Figure A-5. Time Characteristic Curve, I-Inverse
(SW3-3 OFF, Similar to ABB CO-8)
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Figure A-6. Time Characteristic Curve, V-Very Inverse
(SW3-3 OFF, Similar to ABB CO-9)
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Figure A-7. Time Characteristic Curve, E-Extremely Inverse
(SW3-3 OFF, Similar to ABB CO-11)
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Figure A-8. Time Characteristic Curve, BS142-B
(BS142 Very Inverse)
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Figure A-9. Time Characteristic Curve, BS142-C
(BS142 Extremely Inverse)
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Figure A-10. Time Characteristic Curve, S2-Short Inverse
(SW3-3 ON, Similar to GE IAC 55)
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Figure A-11. Time Characteristic Curve, L2-Long Inverse
(SW3-3 ON, Similar to GE IAC 66)
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Figure A-12. Time Characteristic Curve, I2-Inverse
(SW3-3 ON, Similar to GE IAC 51)
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Figure A-13. Time Characteristic Curve, V2-Very Inverse
(SW3-3 ON, Similar to GE IAC 53)
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Figure A-14. Time Characteristic Curve, E2-Extremely Inverse
(SW3-3 ON, Similar to GE IAC 77)
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