Basler BE1-50B User manual

RESET
BE1-50/51B-105
OVERCURRENT RELAY
R
Basler Electric
Hi
g
hland, Illinois
PICKUP
PICKUP
PICKUPME DIAL
TENTHSUNITS
++
TENTHS
S CURVE
INST
TIME
TEST TRST TRIP
+
UTENS
INST
TIME
0
0S 0 0
12-08-99
D2750-22.vsd
INSTRUCTION MANUAL
FOR
OVERCURRENT RELAY BE1-50/51B
Publication: 9252000991
Revision: L 12/99

BE1-50/51B - Introduction i
W A R N I N G !
To avoid personal injury or equipment damage, only qualified
personnel should perform the procedures presented in this manual.
INTRODUCTION
This manual provides information concerning the operation and installation of the BE1-50/51B
Overcurrent Relay. To accomplish this, the following is provided.
Specifications
Functional description
Mounting information
Setting procedure/example

ii BE1-50/51B - Introduction
CONFIDENTIAL INFORMATION
OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FOR
CONFIDENTIALUSE,SUBJECTTORETURNONREQUEST,ANDWITHTHEMUTUAL
UNDERSTANDINGTHATITWILLNOTBEUSEDINANYMANNERDETRIMENTALTO
THE INTEREST OF BASLER ELECTRIC COMPANY.
First Printing: April 1992
Printed in USA
© 1997, 1998, 1999, Basler Electric Co., Highland, IL 62249
December 1999
Itisnottheintentionofthismanualtocoveralldetailsandvariationsinequipment, 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 Company, Highland, Illinois.
BASLER ELECTRIC
ROUTE 143, BOX 269
HIGHLAND, IL 62249 USA
http://www.basler.com, [email protected]
PHONE [phone] FAX [phone]

BE1-50/51B - Introduction iii
$$#
SECTION 1 GENERAL INFORMATION ....................... 1-1
Description .......................................................1-1
Application .......................................................1-1
Model Numbers ......................................................1-1
Specifications ........................................................1-3
Characteristic Curves .................................................1-11
SECTION 2 CONTROLS AND INDICATORS ................... 2-1
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
SECTION 4 INSTALLATION ................................ 4-1
General .......................................................4-1
Dielectric Test .......................................................4-1
Mounting .......................................................4-1
Panel Drilling Diagram BE1-50/51B, A1 Case (Semi-Flush Mount) ...............4-2
Outline Dimensions, BE1-50/51B, A1 Case (Semi-Flush Mount) .................4-2
Panel Drilling Diagram, S1 Case, (Projection Mount) .........................4-3
Panel Drilling Diagram, S1 Case, (Semi-Flush Mount) ........................4-3
Outline Dimensions For S1 Case (Semi-Flush Mount) ........................4-4
Panel Drilling Diagram, S1 Case, (Projection Mount) .........................4-4
Outline Dimensions, BE1-50/51B, S1 Case (Projection Mount) ..................4-5
Connections .......................................................4-6
AC Input Connections ..............................................4-6
DC Control Connections And Jumper Configuration Terminations ............4-7
BE1-50/51B Overcurrent Relay, Rear View .................................4-8
SECTION 5 TESTING ...................................... 5-1
General .......................................................5-1
Dielectric Test .......................................................5-1
Operational Test Procedure .............................................5-1
Test Equipment Required ...........................................5-1
Pickup and Timing Test Setup ........................................5-2
Target Operational Test Setup .......................................5-2
Test Procedure, Models BE1-50/51B-X05, -X06, and -X07 ..................5-3
Test Procedure, Models BE1-50/51B-X01, -X02, and -X03 ..................5-6
Setting the Relay .....................................................5-8
Periodic Tests .......................................................5-8
General .........................................................5-8

iv BE1-50/51B - Introduction
Periodic Test .................................................... 5-9

BE1-50/51B - Introduction v
CONTENTS- Continued
SECTION 6 MAINTENANCE ............................ 6-1
General ............................................................6-1
In-House Repair ......................................................6-1
Storage ............................................................6-1
Periodic Tests .......................................................6-1
General .........................................................6-1
Periodic Test .....................................................6-1
SECTION 7 MANUAL CHANGE INFORMATION ............ 7-1
SECTION 8 RELAY DIFFERENCES ...................... 8-1

BE1-50/51B-General Information 1-1
SECTION 1 • GENERAL INFORMATION
DESCRIPTION
BE1-50/51B Overcurrent Relays are microprocessor based, 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 hertz or 60 hertz power systems. Models are available with fifteen popular time
characteristics and a wide range of pickup settings.
APPLICATION
The 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.
Integrating reset functions are available to simulate the disk reset of electromechanical relays. BE1-50/51B
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.
Magnetic latching targets retain indication without power.
Built-in accuracy eliminates internal adjustments.
Minimum transient overreach.
Field selectable characteristic curve selection.
Field selectable instantaneous or integrating reset.
Field selectable 50 or 60 hertz operation.
Field selectable fixed instantaneous delay (0.0, 0.1, 0.2, or 0.3 second on 100 series relays and 0.0
or 0.1 second on 200 series relays.).
Individual models are available for 1 ampere and 5 amperes sensing input currents and installed in A1 or
S1 cases. BE1-50/51B Overcurrent Relays may be tested without removing the relay from the case.
Shorting contacts are provided for all current inputs when the connection plug or relay chassis is removed
from the relay case. Figure 1-1 shows the front panel of the BE1-50/51B Overcurrent Relay, in an S1 case.
BE1-50/51B Overcurrent Relays have many advantages over other overcurrent relays. The five primary
advantages are:
Time characteristics are defined by equations and graphs.
Field selectable time characteristics.
Very low burden.
Self powered from the sensed current.
Continuous automatic calibration.
MODEL NUMBERS
Model number variations in the BE1-50/51B Overcurrent Relays are specified by a three digit extension to
the model number. Tables 1-1 and 1-2 provide model number, case style, switch SW8-3 selections, and
sensing current input ranges. Internal switches provide for selecting system operating frequencies of 50

1-2 BE1-50/51B-General Information
RESET
BE1-50/51B-105
OVERCURRENT RELAY
R
Basler Electric
Hi
g
hland, Illinois
PICKUP
PICKUP
PICKUPME DIAL
TENTHSUNITS
++
TENTHSS CURVE
INST
TIME
TEST TRST TRIP
+
UTENS
INST
TIME
0
0S 0 0
12-08-99
D2750-22.vsd
Figure 1-1. BE1-50/51B Overcurrent Relay, S1 Case

BE1-50/51B-General Information 1-3
or60hertz,instantaneouselementdelays,curvesets,andinstantaneousorintegratingresetcharacteristics.
ThelocationsanddescriptionoftheseswitchesisprovidedinSection 2. Integrating reset is availablein 100
series relays (i.e. - BE1-50/51B-105) when there is adequate input current to power the relay. Integrating
resetisavailablein200seriesrelays(i.e.-BE1-50/51B-205)evenwhentheinputcurrentfallstozero. Two-
hundred series relays also have additional characteristic curves available through curve set selection.
Table 1-1. BE1-50/51B Overcurrent Relays, One Ampere CT Secondary, 50/60 Hertz
Model Number Case Style SW8-3 Selects
Sensing Input Range (Amps)
TIME INST
BE1-50/51B-101* A1 0.2 Second Delay 0.1 - 3.18 0.2 - 19.8
BE1-50/51B-201* A1 Curve Set 0.1 - 3.18 0.2 - 19.8
BE1-50/51B-102* S1 (Projection Mount) 0.2 Second Delay 0.1 - 3.18 0.2 - 19.8
BE1-50/51B-202* S1 (Projection Mount) Curve Set 0.1 - 3.18 0.2 - 19.8
BE1-50/51B-103* S1 (Semi-Flush Mount) 0.2 Second Delay 0.1 - 3.18 0.2 - 19.8
BE1-50/51B-203* S1 (Semi-Flush Mount) Curve Set 0.1 - 3.18 0.2 - 19.8
Table 1-2. BE1-50/51B Overcurrent Relays, Five Ampere CT Secondary, 50/60 Hertz
Model Number Case Style SW8-3 Selects
Sensing Input Range (Amperes)
TIME INST
BE1-50/51B-105* A1 0.2 Second Delay 0.5 - 15.9 1.0 - 99.0
BE1-50/51B-205* A1 Curve Set 0.5 - 15.9 1.0 - 99.0
BE1-50/51B-106* S1 (Projection Mount) 0.2 Second Delay 0.5 - 15.9 1.0 - 99.0
BE1-50/51B-206* S1 (Projection Mount) Curve Set 0.5 - 15.9 1.0 - 99.0
BE1-50/51B-107* S1 (Semi-Flush Mount) 0.2 Second Delay 0.5 - 15.9 1.0 - 99.0
BE1-50/51B-207* S1 (Semi-Flush Mount) Curve Set 0.5 - 15.9 1.0 - 99.0
NOTE:
* 100 series relays (e.g. - BE1-50/51B-105) have the integrating reset function when there is
adequate input current to power the relay. 200 series relays (e.g. - BE1-50/51B-205) have the
integrating reset function even when the input current falls to zero.
SPECIFICATIONS
BE1-50/51B Overcurrent Relays are available with the following features and capabilities.
Current Sensing Input
(1 Ampere Unit) Continuous current: 2.8 amperes. One second current: 80 amperes.
(5 Ampere Unit) Continuous current: 14 amperes. One second current: 400 amperes.

1-4 BE1-50/51B-General Information
TIME PICKUP Range SettingtheTIMEPICKUPtotheminimumpickup(0.1onthe1 ampere unit
and 0.5 on the 5 ampere unit), places the relay in the most sensitive state
and may be used as a safety setting.
(1 Ampere Unit) 0.1 to 3.18 amperes in 0.02 ampere steps.
(5 Ampere Unit) 0.5 to 15.9 amperes in 0.1 ampere steps.
TIME Dropout Dropout occurs at 95% of pickup value.
TIME PICKUP
Accuracy
(1 Ampere Unit) ±2% ±5 milliamperes at or above 0.1 ampere settings.
(5 Ampere Unit) ±2% ±25 milliamperes at or above 0.5 ampere settings.
Frequency Response A change of ±5 hertz from the nominal 50/60 hertz current causes less
than 0.5% change in the current required for pickup.
TIME DIAL Range
(1 Ampere Unit) 0.0 to 9.9, in 0.1 steps.
(5 Ampere Unit) 0.0 to 9.9, in 0.1 steps.
INST PICKUP Range Setting the INST PICKUP to the minimum pickup (0.2 onthe 1 ampere unit
and 1.0 on the 5 ampere unit), places the relay in the most sensitive state
and may be used as a safety setting.
(1 Ampere Unit) 0.2 to 19.8 amperes in 0.2 ampere steps.
(5 Ampere Unit) 1 to 99 amperes in 1 ampere steps.
INST Dropout Dropout occurs at 95% of pickup value.
INST PICKUP
Accuracy
(1 Ampere Unit) ±2% ±5 milliamperes at or above 0.2 ampere settings.
(5 Ampere Unit) ±2% ±25 milliamperes at or above 1.0 ampere settings.
Frequency Response A change of ±5 hertz from the nominal 50/60 hertz current causes less
than 0.5% change in the current required for pickup.
INSTTransientResponse Lessthan10%overreach withsystemtimeconstantsupto 40 milliseconds
Burden Burden is non-linear. (Figure 1-2 illustrates the device burden.)
(1 Ampere Unit) At 0.1 amperes, Z = 120 ohms. At 1.0 ampere, Z = 5 ohms.
(5 Ampere Unit) At 0.5 amperes, Z = 4.8 ohms. At 5.0 amperes, Z = 0.2 ohms.

BE1-50/51B-General Information 1-5
Harmonic Response BE1-50/51B harmonic rejection is illustrated in Figure 1-3.
Figure 1-3 shows that a relay set for one ampere pickup would pickup at
0.96 ampere on a current containing 40% seventh harmonic. This
corresponds to a ten-to-one rejection ratio. Other conditions may be
evaluated in the same manner.
Figure 1-2. Device Burden Characteristics

1-6 BE1-50/51B-General Information
Figure 1-3. Harmonic Response
INST Characteristics BE1-50/51B instantaneous characteristic curves are similar to standard
electromechanical instantaneous units. However, the time to trip for
ground applications is slightly longer than that for phase applications to
allow time to power-up the relay. Longer trip time for ground
applications is beneficial because it helps to avoid nuisance trips.
For phase applications, the maximum time to trip is 3.5 cycles at a
pickup multiple of 1.0, and 1.5 cycles at a pickup multiple of 3.0. The
corresponding times for ground applications are 4.5 and 1.75 cycles.
Figure 1-4 shows the instantaneous characteristic curves for maximum
time to trip.
On 100 series relays, additional delays of 0.1, 0.2, or 0.3 seconds may
be added with internal switches SW8-2 and -3. These delays apply to
both phase and ground applications. Closing switch SW8-2 provides an
additional delay of 0.1 second. Closing switch SW8-3 provides an
additional delay of 0.2 second. Closing both switches SW8-2 and -3
provides an additional delay of 0.3 second. Section 2 illustrates the
location of SW8.

BE1-50/51B-General Information 1-7
Time To Trip ( TT )
AD
MN

C

BD

K
INST Characteristics - Continued
On 200 series relays, an additional delay of 0.1 second may be added
with internal switch SW8-2. This delay applies to both phase and
ground applications. Closing switch SW8-2 provides the additional
delay of 0.1 second.
Figure 1-4. Instantaneous Characteristic Curves
Time Characteristics Nine inverse time functions and one fixed time function can be selected
by a front panel switch. Characteristic curves for the inverse and
definite time functions are defined by the following equation.
Where: D = TIME DIAL setting
M = Multiple of PICKUP
A, B, C, N, K = Constants for the particular curve

1-8 BE1-50/51B-General Information
Refer to Tables 1-3 and 1-4 for the time characteristic curve constants.
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 available for use in computer relay
setting programs. Timing accuracy is the sum of ±1 cycle and ±2%.
The fixed time characteristic provides delays of 0.0 to 9.9 seconds
corresponding to the time dial setting. The time set is constant over a
range of pickup multiples from 1.0 to 40. Accuracy is ±2% ±1 cycle for
time dial settings of 0.1 and greater.
Table 1-3. Time Characteristic Curve Constants
( Series 100 Relays or Series 200 Relays With SW8-3 Open (OFF) )
Curve Type Figure Constants
BE1 Similar To Number ABCNKR
S ABB CO-2 1-6 0.2663 0.03393 1.000 1.2969 0.028 0.500
L ABB CO-5 1-7 5.6143 2.18592 1.000 1.000 0.028 15.750
D ABB CO-6 1-8 0.4797 0.21359 1.000 1.5625 0.028 0.875
M ABB CO-7 1-9 0.3022 0.12840 1.000 0.5000 0.028 1.750
I ABB CO-8 1-10 8.9341 0.17966 1.000 2.0938 0.028 9.000
V ABB CO-9 1-11 5.4678 0.10814 1.000 2.0469 0.028 5.500
E ABB CO-11 1-12 7.7624 0.02758 1.000 2.0938 0.028 7.750
B BS142-B* 1-13 1.4636 0.00000 1.000 1.0469 0.028 3.250
C BS142-C* 1-14 8.2506 0.00000 1.000 2.0469 0.028 8.000
F None** None 0.0000 1.00000 0.000 0.0000 0.000 1.000
Table 1-4. Time Characteristic Curve Constants ( 200 Series Relays With SW8-3 Closed (ON)
Curve Type Figure Constants
BE1 Similar To Number A B C N K R
S GE IAC 55 1-15 0.0286 0.0208 1.000 0.9844 0.028 0.0940
L GE IAC 66 1-16 2.3955 0.00000 1.000 0.3125 0.028 7.8001
D ABB CO-6 1-8 0.4797 0.21359 1.000 1.5625 0.028 0.8750
M ABB CO-7 1-9 0.3022 0.12840 1.000 0.5000 0.028 1.7500
I GE IAC 51 1-17 0.2747 0.1042 1.000 0.4375 0.028 0.8868
V GE IAC 53 1-18 4.4309 0.0991 1.000 1.9531 0.028 5.8231
E GE IAC 77 1-19 4.9883 0.0129 1.000 2.0469 0.028 4.7742
B BS142-B* 1-13 1.4636 0.00000 1.000 1.0469 0.028 3.2500
C BS142-C* 1-14 8.2506 0.00000 1.000 2.0469 0.028 8.0000
F None** None 0.0000 1.00000 0.000 0.0000 0.000 1.0000
* Curves B and C are defined in British Standard BS142 and IEC 255-4 (International
Electrotechnical Commission)
** Fixed time from 0.1 to 9.9 seconds.

BE1-50/51B-General Information 1-9
TR ( Time To Reset )
RD
M
21
BE1 Curve Types:
S = Short Inverse V = Very Inverse
L = Long Inverse E = Extremely Inverse
D = Definite Time B = BS142 Very Inverse
M = Moderately Inverse C = BS142 Extremely Inverse
I = Inverse F = Fixed Time
Time Reset Reset occurs when the current drops below pickup and the relay has not
timed out. Switch SW8-4 provides selection of either an instantaneous or
integrating reset characteristic. Opening SW8-4 forces the instantaneous
reset timer to zero when timed dropout occurs. This fast reset
characteristic prevents the ratcheting effect that may occur with repeating
system faults. Closing SW8-4 selects the integrating reset characteristic.
The integrating reset characteristic simulates the disk reset of
electromechanical relays. When the integrating reset characteristic is
selectedon100seriesrelays,insurethatsufficientinputpowerisavailable
to power-up the relay. This is not required on Series 200 relays. Series
200 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 1-5. Equation constants are provided in Table 1-3.
Where: R = Constant for the particular curve
D = TIME DIAL setting
M = Multiple of PICKUP
Target Indicators Magnetically 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 ohm and operate time is less than one millisecond. See
50/51 Output specifications for maximum current rating.
50/51 Output Output contacts are surge protected and rated as follows:
Resistive:
120/240 Vac Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2
minutes, 3 amperes continuously, and break 5 amperes.
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.
Inductive:
120/240 Vac, Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2
125/250 Vdc minutes, 3 amperes continuously, and break 0.3 ampere. 0.3 amperes.
(L/R = 0.04).

1-10 BE1-50/51B-General Information
1.0
10.0
100.0
0.0 0.2 0.4 0.6 0.8 1.0
Multiple of Pickup
xRD (Seconds)
This chart vertical axis xRD (Seconds) is applicable for all curves and is
derived from multiplying the constant Rfor the curve selected times D(the
TIME DIAL setting).
Figure 1-5. Integrating Reset Characteristic Curve
AUX Output Output contacts can be configured in the field using jumpers to select
closing on either/or timed or instantaneous trip. Output contacts are
surge protected and rated as follows:
Resistive:
120/240 Vac Make 30 amperes for 0.2 seconds, carry 7 amperes continuously, and
break 5 amperes.
125/250 Vdc Make 30 amperes for 0.2 seconds, carry 7 amperes continuously, and
break 0.3 ampere.
Inductive:
120/240 Vac, Make and carry 30 amperes for 0.2 seconds, carry 7 amperes
125/250 Vdc continuously, and break 0.3 ampere. (L/R = 0.04).
Isolation Meets IEC 255-5 and exceeds IEEE C37.90-1989, one-minute dielectric
(high potential) tests as follows:
All circuits to ground: 2828 Vdc
Input to Output Circuits 2000 Vac or 2828 Vdc

BE1-50/51B-General Information 1-11
Surge Withstand Capability
Oscillatory Qualified to IEEE C37.90-1989 Standard Surge Withstand Capability
(SWC) Tests for Protective Relays and Relay Systems.
Fast Transient Qualified to IEEE C37.90-1989 Standard Surge Withstand Capability
(SWC) Tests for Protective Relays and Relay Systems.
Impulse Test Qualified to IEC 255-5.
Radio Frequency Field tested using a five watt, hand held transceiver operating at random
Interference (RFI) frequencies centered around 144 megahertz and 440 megahertz, with the
antenna located six inches from the relay in both horizontal and vertical
planes.
Patent Patented in U.S., 1998, U.S. Patent No. 5751532.
UL Recognized/ UL Recognized per Standard 508, UL File No. E97033. CSA Certified per
CSA Certified Standard CAN/CSA-C22.2 No. 14-M91, CSA File No. LR 23131. Note:
Output contacts are not UL Recognized/CSA Certified for voltages greater
than 250 volts.
Temperature Operating Range
-40C (-40F) to 70C (158F)
Recommended Storage Range
-50C (-58F) to 50C (122F).
Shock 15 g in each of three mutually perpendicular planes.
Vibration 2 g in each of three mutually perpendicular planes swept over the range of
10 to 500 hertz for a total of six sweeps, 15 minutes each sweep.
Weight 8.6 pounds.
CHARACTERISTIC CURVES
Figures 1-6 through 1-14 illustrate the characteristic curves that are programmed into the nonvolatile
memory of series 100 relays. Figures 1-6 through 1-19 illustrate the characteristic curves that are
programmed into the nonvolatile memory of series 200 relays. To order full-size drawings of these
characteristic curves, contact Customer Service Department of the Power Systems Group, Basler Electric,
and request publication number 9 2520 00 999 (Figures 1-6 through 1-19). These publications contain full
size characteristic curves on transparent paper (vellum).

1-12 BE1-50/51B-General Information
MULTIPLES OF PICK-UP
Figure 1-6. Time Characteristic Curve 99-1369, S-Short Inverse (SW8-3 OFF, Similar to ABB CO-2)

BE1-50/51B-General Information 1-13
MULTIPLES OF PICK-UP
Figure 1-7. Time Characteristic Curve, 99-1370, L-Long Inverse (SW8-3 OFF, Similar to ABB CO-5)

1-14 BE1-50/51B-General Information
MULTIPLES OF PICK-UP
Figure 1-8. Time Characteristic Curve, 99-1371, D-Definite Time (Similar to ABB CO-6)