9137300990 Rev J
BE1-81O/U Testing
5-3
Definite Time Delay – Cycles
1. Connect the relay as shown in Figure 5-1.
2. Adjust Selector Switch S7 for setpoint 1, located on the definite time circuit board controlling setpoint
1, to obtain a time delay in cycles with a x1 multiplier (S7-1 down, S7-2 down, and S7-3 up).
3. Adjust the front panel, setpoint 1 controls to the following settings.
Over/Under Selector Switch: Under (U) position
Frequency Selector Switch: 55.00
Time Delay Selector Switch: 11
4. Apply operating power to the relay.
5. Apply 60 Hz voltage to the relay sensing input. The level of voltage must exceed the setting of the
adjustable, front panel Undervoltage Inhibit control.
6. Ensure that the target indicators are reset.
7. Step the sensing input frequency down from 60 Hz to 53 Hz. The setpoint 1 Pickup indicator lights
and the test set timer begins counting. When the time delay ends, the setpoint 1 output relay and
target trips, and the test set timer stops counting. The timer should indicate 0.208 seconds (11 cycles
x 1/53,
±
1.0 Hz).
8. Restore the sensing input frequency to 60 Hz and reset the targets.
9. Repeat steps 7 and 8 for Time Delay Selector Switch settings of 22, 44, and 88.
10. If desired, the above steps may be performed with Selector Switch S7 configured for a time delay
multiplier of x10 (S7-1 up and S7-2 down) or x100 (S7-1 up and S7-2 up).
Definite Time Delay – Seconds
1. Connect the relay as shown in Figure 5-1.
2. Adjust Selector Switch S7 for setpoint 1, located on the definite time circuit board controlling setpoint
1, to obtain a time delay in seconds with a x1 multiplier (S7-1 down, S7-2 down, and S7-3 down).
3. Adjust the front panel, setpoint 1 controls to the following settings.
Over/Under Selector Switch: Under (U) position
Frequency Selector Switch: 55.00
Time Delay Selector Switch: 25
4. Apply operating power to the relay.
5. Apply 60 Hz voltage to the relay sensing input. The level of voltage must exceed the setting of the
adjustable, front panel Undervoltage Inhibit control.
6. Ensure that the target indicators are reset.
7. Step the sensing input frequency down from 60 Hz to 53 Hz. The setpoint 1 Pickup indicator lights
and the test set timer begins counting. When the time delay ends, the setpoint 1 output relay and
target trips, and the test set timer stops counting. The timer should indicate 2.5 seconds,
±
0.05
seconds.
8. Restore the sensing input frequency to 60 Hz and reset the targets.
9. Repeat steps 7 and 8 for Time Delay Selector Switch settings of 22, 44, and 88.
10. If desired, the above steps may be performed with Selector Switch S7 configured for a time delay
multiplier of x10 (S7-1 up and S7-2 down) or x100 (S7-1 up and S7-2 up).
Undervoltage Inhibit
1. Connect the relay as shown in Figure 5-1.
2. Adjust the front panel, setpoint 1 controls to the following settings.
Over/Under Selector Switch: Under (U) position
Frequency Selector Switch: 60.00
Time Delay Selector Switch: 25
3. Apply operating power to the relay.
4. Apply 60 Hz voltage to the relay sensing input. The level of voltage must exceed the setting of the
adjustable, front panel Undervoltage Inhibit control.
Содержание BE1-81O/U
Страница 1: ...INSTRUCTION MANUAL FOR DIGITAL FREQUENCY RELAY BE1 81O U Publication 9137300990 Revision J 10 07...
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Страница 6: ...iv BE1 81O U Introduction 9137300990 Rev J This page intentionally left blank...
Страница 14: ...1 6 BE1 81O U General Information 9137300990 Rev J Figure 1 2 Inverse Time Overfrequency Characteristic Curves...
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Страница 20: ...2 4 BE1 81O U Controls and Indicators 9137300990 Rev J This page intentionally left blank...
Страница 22: ...3 2 BE1 81O U Functional Description 9137300990 Rev J Figure 3 1 BE1 81O U Functional Block Diagram...
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Страница 28: ...4 2 BE1 81O U Installation 9137300990 Rev J Figure 4 1 S1 Case Panel Cutting Diagram Semi Flush Mounting...
Страница 30: ...4 4 BE1 81O U Installation 9137300990 Rev J D2853 21 06 15 99 Figure 4 3 S1 Case Cover Dimensions Front View...
Страница 31: ...9137300990 Rev J BE1 81O U Installation 4 5 Figure 4 4 S1 Case Dimensions Rear View...
Страница 33: ...9137300990 Rev J BE1 81O U Installation 4 7 Figure 4 6 S1 Case Dimensions Projection Mounting Side View...
Страница 37: ...9137300990 Rev J BE1 81O U Installation 4 11 D2856 02 06 15 99 Figure 4 10 M1 Case Cover Dimensions Front View...
Страница 39: ...9137300990 Rev J BE1 81O U Installation 4 13 Figure 4 12 M1 Case Dimensions Semi Flush Mounting Side View...