5-
2
LPS-D Line Protection System
GE Power Management
5.2 MEASURING UNIT TESTS
5 FUNCTIONAL TESTS (FACTORY SETTINGS)
5
5.2 MEASURING UNIT TESTS
5.2.1 T1 – FAULT DETECTOR TEST
The Fault Detector responds to sudden changes in current levels. Slow changes are not picked up.
1.
Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–14.
2.
Set the relay into test mode 38 (the fault detector). The relay displays
FAULT DETECTOR ON
3.
Settings:
Z1DISTANCE
(101)
Z1PHASE = NO
(104)
Z1GROUND = NO
Z2DISTANCE
(201)
Z2PHASE = NO
(204)
Z2GROUND = NO
Z3DISTANCE
(301)
Z3PHASE = NO
(304)
Z3GROUND = NO
Z4DISTANCE
(401)
Z4PHASE = NO
(405)
Z4GRND = NO
OVERCURRENT
(605)
50G = NO
(610)
51G = NO
4.
Set the voltages as follows:
VA = 67 V rms
∠
0°
VB = 67 V rms
∠
–120°
VC = 67 V rms
∠
+120°
5.
Slowly increase
I
op
to 1.2 (0.4) A rms, at approximately 0.1 (0.01) A per second. Slowly decrease the cur-
rent to 0 A. The A1 contact should not close.
6.
Immediately increase
I
op
to 1.5 (0.3) A rms. The A1 contact should close momentarily.
7.
Immediately increase
I
op
to 2.5 (0.5) A rms. The A1 contact should close until current is removed.
8.
Reduce
I
op
to 0.
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 ...