GE SPM Series, Instruction Manual

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10-
4
SPM Synchronous Motor Protection & Control GE Power Management
10.4 COLLECTOR-RING MOTOR POWER FACTOR TRIP TEST 10 FUNCTIONAL TESTS
10
10.4 COLLECTOR-RING MOTOR POWER FACTOR TRIP TEST 10.4.1 SETUP
1. Connect as for Collector-Ring Power Factor Test in the previous section.
2. Connect timer to TRIP relay.
10.4.2 RELAY PROGRAMMING
a) CONFIGURATIONS
Program as defaults shown in Section 5.4: CONFIGURATIONS MENU on page 5–12 except for following
exceptions
• MOTOR: Collector-Ring
b) SETPOINTS
Program as defaults shown in 5.2: SETPOINTS MENU on page 5–2.
10.4.3 TEST
1. Apply control power to relay and wait for self test diagnostic to complete. Should get SPM READY mes-
sage and TRIP relay should close.
2. Turn on current source and function generator.
3. Open MX switch
4. FAR contact should close followed by FCX contact. FIELD IS APPLIED message should momentarily flash
on screen.
5. PF metered value will now be displayed along with other metered values.
6. Vary voltage angle as in table below and check PF reading.
Table 10–3: COLLECTOR-RING MOTOR PF TRIP TEST RESULTS
SETPOINTS INPUT/EXPECTED RESULTS
PF TRIP PF DELAY ANGLE EXPECTED PF TRIP TIME
–0.60 1 302° –0.52
–0.70 5 309° –0.63
–0.80 3 317° –0.74
1.00 10 341° –0.95