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10.4 COLLECTOR-RING MOTOR POWER FACTOR TRIP TEST
10.4 COLLECTOR-RING MOTOR POWER FACTOR TRIP TEST
10
1. Connect as for Collector-Ring Power Factor Test in the previous section.
2. Connect timer to TRIP relay.
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.
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
PF TRIP
–0.60
–0.70
–0.80
1.00
10-
4
Courtesy of store.ips.us
INPUT/EXPECTED
PF DELAY
ANGLE
1
302°
5
309°
3
317°
10
341°
SPM Synchronous Motor Protection and Control
10.4.2 RELAY PROGRAMMING
RESULTS
EXPECTED PF
TRIP TIME
–0.52
–0.63
–0.74
–0.95
10 FUNCTIONAL TESTS
10.4.1 SETUP
10.4.3 TEST
GE Multilin
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