Basler BE1-50/51B-217 User manual

0
0S 0 00
0
RESET
PICKUP
OVERCURRENT RELAY
BE1-50/51B-217
Highland, Illinois
Basler Electric
R
PICKUP
PICKUP
(0.5 MIN. SET)TIME DIAL
TENTHSUNITS ++ TENTHSUNITS CURVE
INST
TIME
MANUAL TRIPMANUAL TRIP
+UNITSTENS
INST
TIME
SOLID STATE PROTECTIVE RELAY
D2718-16.vsd
12-14-99
INSTRUCTION MANUAL
FOR
OVERCURRENT RELAY BE1-50/51B-217
Publication: 9252000980
Revision: A 12/99

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
installationoftheBE1-50/51B-217OvercurrentRelay. Toaccomplish
this, the following is provided.
Specifications
Functional description
Mounting information
Setting procedure/example.

ii
CONFIDENTIAL INFORMATION
OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. 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 COMPANY.
First Printing: April 1996
Printed in USA
© 1995, 1999, Basler Electric Co., Highland, IL 62249
December 1999
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 Company, Highland, Illinois.
BASLER ELECTRIC, BOX 269 HIGHLAND, IL 62249 USA
PHONE [phone] FAX [phone]

iii
CONTENTS
SECTION 1 GENERAL INFORMATION 1-1
Description ..............................................1-1
Application ..............................................1-1
General .............................................1-1
Load Demand Curve ...................................1-2
Specifications ............................................1-3
Characteristic Curves ......................................1-9
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 .....................................3-2
Outputs .............................................3-2
SECTION 4 INSTALLATION 4-1
General .................................................4-1
Dielectric Test ............................................4-1
Mounting ................................................4-1
Panel Drilling Diagram, S1 Case, (Semi-Flush Mount) .............4-2
Outline Dimensions For S1 Case (Semi-Flush Mount) .............4-3
Panel Drilling Diagram, S1 Case, (Projection Mount) ..............4-3
Outline Dimensions, BE1-50/51B, S1 Case (Projection Mount) ......4-4
Connections .............................................4-5
AC Input Connections ..................................4-5
DC Control Connections And Jumper Configuration Terminations 4-6
BE1-50/51B Overcurrent Relay, Rear View .....................4-7
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 .......................................5-3
Setting the Relay .........................................5-6
Periodic Tests ............................................5-6
General .............................................5-6
Periodic Test .........................................5-6

iv
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 ......................................... 6-2
SECTION 7 MANUAL CHANGE INFORMATION 7-1

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. BE1-50/51B-217 Overcurrent Relay is a
special, modified relay with software for a
Load Demand Characteristic Curve in place of the short
inverse standard curve. To select the
Load Demand Characteristic Curve , position the CURVE select
switch to position S.
APPLICATION
General
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 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).
Individual models are available for 1 ampere and 5 amperes sensing input currents and installed in A1 or
S1 cases. BE1-50/51B-217 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-217 Overcurrent
Relay.
BE1-50/51B-217 Overcurrent Relays have many advantages over other overcurrent relays. The four
primary advantages are:
&Field selectable time characteristics.
&Very low burden.
&Self powered from the sensed current.
&Continuous automatic calibration.

BE1-50/51B-217 General Information
1-2
RESET
BE1-50/51B-217
OVERCURRENT RELAY
R
Basler Electric
Highland, Illinois
PICKUP
PICKUP
PICKUPME DIAL
TENTHSUNITS
++
TENTHS
S CURVE
INST
TIME
TEST TRST TRIP
+
UTENS
INST
TIME
0
0S 0
0
12-14-99
D2718-17.vsd
Figure 1-1. BE1-50/51B Overcurrent Relay, S1 Case

BE1-50/51B-217 General Information
1-3
Load Demand Curve
Scenario
Configure the relay such that when the sensed current is:
1.05 times pickup Time to trip 1.0 hour
1.2 times pickup Time to trip 1.0 hour
1.5 times pickup Time to trip 2.0 minutes
4.0 times pickup Time to trip 0.2 seconds
6.0 times pickup Time to trip 0.2 seconds
Settings
Position the following switches as designated. (Switch locations are shown in Section 2, Controls And
Indicators
.) Figure 1-2 is a graph showing the timing for the application scenario.
SW8-1 Select nominal operating frequency
SW8-2 OFF (open) no instantaneous delay
SW8-3 OFF (open) no instantaneous delay
SW8-4 ON (closed) integrating reset selected
TIME DIAL 4.0
CURVE S
TIME PICKUP Select preferred time pickup level
INST PICKUP Select preferred instantaneous pickup level
SPECIFICATIONS
BE1-50/51B-217 Overcurrent Relay has the following features and capabilities.
Current Sensing Input Continuous current: 14 amperes. One second current: 400 amperes.
TIME PICKUP Range 0.5 to 15.9 amperes in 0.1 ampere steps. Setting the TIME PICKUP to
the minimum pickup (0.5 ampere), places the relay in the most sensitive
state and may be used as a safety setting.
TIME Dropout Dropout occurs at 95% of pickup value.
TIME PICKUP
Accuracy ±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 0.0 to 9.9, in 0.1 steps.
INST PICKUP Range 1 to 99 amperes in 1 ampere steps. Setting the INST PICKUP to the
minimum pickup (1.0), places the relay in the most sensitive state and
may be used as a safety setting.
INST Dropout Dropout occurs at 95% of pickup value.

BE1-50/51B-217 General Information
1-4
0.01
0.1
1
10
100
1000
10000
11040
Instantaneous
Tap = 5 amps.
Time Tap = 1amp.
Curve S
Time Dial 4.0
1
2
3
4
5
MULTIPLE OF PICKUP
TIME IN SECONDS
Figure 1-2. Load Demand Characteristic Curve

BE1-50/51B-217 General Information
1-5
INST PICKUP
Accuracy ±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.
INST Transient Response Less than 10% overreach with system time constants up to 40
milliseconds
Burden Burden is non-linear. At 0.5 amperes, Z = 4.8 ohms. At 5.0 amperes,
Z = 0.2 ohms. (Figure 1-3 illustrates the device burden.)
Figure 1-3. Device Burden Characteristics

BE1-50/51B-217 General Information
1-6
Harmonic Response BE1-50/51B harmonic rejection is illustrated in Figure 1-4.
Figure 1-4 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 1-4. 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 1-5 shows the instantaneous characteristic curves for maximum
time to trip.
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-217 General Information
1-7
Figure 1-5. Instantaneous Characteristic Curves
Time Characteristics Nine inverse time functions and one fixed time function can be selected
by a front panel switch.
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. BE1-50/51B-217 relays provide the
integrating reset function even when input current falls to zero.
Integrating reset characteristics are shown in Figure 1-6.
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.

BE1-50/51B-217 General Information
1-8
0.1
1
10
100
1000
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Multi
p
le of Ta
p
xD (Seconds)
SL
I
C
E
V
B
M
F
D
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).
This chart vertical axis x D (Seconds) is applicable for all curves and is derived from
multiplying the curve selected times D(the TIME DIAL setting).
Figure 1-6. 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.

BE1-50/51B-217 General Information
1-9
AUX Output - Continued
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
Surge Withstand Capability
Oscillatory Qualified to IEEE C37.90.1-1989 5VCPFCTF 5WTIG9KVJUVCPF
%CRCDKNKV[59%6GUVUHQT2TQVGEVKXG4GNC[UCPF4GNC[5[UVGOU
Fast Transient Qualified to IEEE C37.90.1-1989 Standard Surge Withstand
Capability (SWC) Tests for Protective Relays and Relay
Fast Transient Qualified to IEEE C37.90-1989.
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.
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 1-7 through 1-15 illustrate the characteristic curves that are programmed into the nonvolatile
memory of this relay. To order full-size drawings of these characteristic curves, contact the Customer
Service Department of the Power Systems Group, Basler Electric, and request the 99-(4 digit) number
associated with each graph. These graphs are full size characteristic curves on transparent paper (vellum).

BE1-50/51B-217 General Information
1-10
MULTIPLES OF PICK-UP
Figure 1-7. Time Characteristic Curve 99-1610, Load Demand Curve

BE1-50/51B-217 General Information
1-11
MULTIPLES OF PICK-UP
Figure 1-8. Time Characteristic Curve, 99-1370, L-Long Inverse

BE1-50/51B-217 General Information
1-12
MULTIPLES OF PICK-UP
Figure 1-9. Time Characteristic Curve, 99-1371, D-Definite Time

BE1-50/51B-217 General Information
1-13
MULTIPLES OF PICK-UP
Figure 1-10. Time Characteristic Curve, 99-1372, M-Moderately Inverse

BE1-50/51B-217 General Information
1-14
MULTIPLES OF PICK-UP
Figure 1-11. Time Characteristic Curve, I-Inverse

BE1-50/51B-217 General Information
1-15
MULTIPLES OF PICK-UP
Figure 1-12. Time Characteristic Curve, 99-1374, V-Very Inverse