4-
12
LPS-D Line Protection System
GE Power Management
4.2 GENERAL RELAY TESTS
4 ACCEPTANCE/PERIODIC TESTS
4
2.
Apply rated DC across CC1 (D2-D18). Using the keypad and the INFORMATION: “CC status” command,
verify that CC1 is ON. Remove the DC from CC1.
3.
Apply rated DC across CC2 (D3-D19). Using the keypad and the INFORMATION: “CC status” command,
verify that CC2 is ON. Remove the DC from CC2.
4.
Apply rated DC across CC3 (D4-D20). Using the keypad and the INFORMATION: “CC status” command,
verify that CC3 is ON. Remove the DC from CC3.
5.
Apply rated DC across CC4 (D5-D21). Using the keypad and the INFORMATION: “CC status” command,
verify that CC4 is ON. Remove the DC from CC4.
6.
Apply rated DC across CC5 (D6-D22). Using the keypad and the INFORMATION: “CC status” command,
verify that CC5 is ON. Remove the DC from CC5.
7.
Apply rated DC across CC6 (D7-D23). Using the keypad and the INFORMATION: “CC status” command,
verify that CC6 is ON. Remove the DC from CC6.
8.
Apply rated DC across CC7 (D8-D24). Using the keypad and the INFORMATION: “CC status” command,
verify that CC7 is ON. Remove the DC from CC7.
9.
Apply rated DC across CC8 (D9-D25). Using the keypad and the INFORMATION: “CC status” command,
verify that CC8 is ON. Remove the DC from CC8.
10. Apply rated DC across CC9 (D10-D26). Using the keypad and the INFORMATION: “CC status” command,
verify that CC9 is ON. Remove the DC from CC10.
11. Apply rated DC across CC10 (D11-D27). Using the keypad and the INFORMATION: “CC status” com-
mand, verify that CC10 is ON. Remove the DC from CC10.
12. Apply rated DC across CC11 (D12-D28). Using the keypad and the INFORMATION: “CC status” com-
mand, verify that CC11 is ON. Remove the DC from CC11.
13. Apply rated DC across CC12 (D13-D29). Using the keypad and the INFORMATION: “CC status” com-
mand, verify that CC12 is ON. Remove the DC from CC12.
4.2.5 T4 – AC SYSTEM INPUT TEST
This test uses Present Values to determine that voltages and currents are properly connected to the terminal
strip. The VALUES function can be used any time during the test to verify the relay voltages and currents.
1.
Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–14.
2.
Set VA to 67 V rms
∠
0°, VB to 57 V rms
∠
–120°, and VC to 47 V rms
∠
120°.
3.
Press the INF key on the keypad. Scroll, using the arrow keys, to the heading:
1. Present values
and press the ENT key. The present values are now displayed.
4.
Scroll to the values of VA, VB, and VC and verify that the voltages are within ±2 volts of the voltage source
setting. This verifies the connections of the voltage sources.
NOTE
: Alternately, whenever the display is blank, press the CLR key to have the relay automati-
cally scroll through the present values.
5.
Set
I
op
to 1.0 amp rms for phases IA, IB, or IC, as shown by the Y connection point in Figure 4–3: PHASE
TO GROUND TEST CONNECTIONS on page 4–14.
6.
Verify the value of IA, IB, or IC depending on connection Y. Verify that the current reading is between 0.9
and 1.1 amps rms.
7.
Reduce the test current to zero amps.
Summary of Contents for LPS-D
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Page 226: ...7 4 LPS D Line Protection System GE Power Management 7 1 RATINGS 7 SPECIFICATIONS 7 ...
Page 284: ...10 20 LPS D Line Protection System GE Power Management 10 8 HELP MENU 10 ALPS TEST PROGRAM 10 ...
Page 412: ...C 34 LPS D Line Protection System GE Power Management C 3 POINT LISTS APPENDIXC C ...
Page 416: ...D 4 LPS D Line Protection System GE Power Management D 1 KEYPAD MENUS APPENDIXD D ...
Page 422: ...F 2 LPS D Line Protection System GE Power Management F 1 WARRANTY INFORMATION APPENDIXF F ...
Page 436: ...xiv LPS D Line Protection System GE Power Management INDEX INDEX ...