Power Factor - GE 750 Instruction Manual

S6 Monitoring
NEUTRAL
CURRENT

Power Factor

POWER FACTOR 1
GE Multilin
c) Neutral Current Level
PATH: SETPOINTS S6 MONITORING
[ ] NEUTRAL CURRENT
FUNCTION: Disabled
NEUTRAL CURRENT
MESSAGE
RELAYS (3-7): -----
NEUTRAL CURRENT
MESSAGE
PICKUP: 1.00 x CT
NEUTRAL CURRENT
MESSAGE
DELAY:
See Common Setpoints on page 5–5 for additional setting details.
FIGURE 5–37: Neutral Current Level Logic
PATH: SETPOINTS S6 MONITORING
[ ] PWR FACTOR 1
FUNCTION: Disabled
PWR FACTOR 1
MESSAGE
RELAYS (3-7): -----
PWR FACTOR 1
MESSAGE
PICKUP: 0.80
PWR FACTOR 1
MESSAGE
DROPOUT: 1.00
PWR FACTOR 1
MESSAGE
DELAY:
It is generally desirable for a system operator to maintain the power factor as close
to unity as possible to minimize both costs and voltage excursions. Since the power
factor is variable on common non-dedicated circuits, it is advantageous to
compensate for low (lagging) power factor values by connecting a capacitor bank to
the circuit when required. The relay allows two stages of capacitance switching for
power factor compensation.
The relay calculates the average power factor in the three phases as follows:
Average Power Factor
http://www.GEmultilin.com
Feeder Management Relay
CURRENT LEVEL NEUTRAL CURRENT
Range: Disabled,
Alarm, Control
Range: Any combination of 3 to 7
Auxiliary relays
Range: 0.05 to 20.00 x CT in steps of
0.01
Range: 0 to 60000 s in steps of 1
2 s
POWER FACTOR POWER FACTOR 1(2)
Range: Disabled,
Alarm, Control
Range: Any combination of 3 to 7
Auxiliary relays
Range: –0.99 to 1.00 in steps of 0.01
Range: –0.99 to 1.00 in steps of 0.01
Range: 0 to 60000 s in steps of 1
50 s
Total 3 Phase Real Power
= ------------------------------------------------------------------------------------------
Total 3 Phase Apparent Power
750/760
Alarm, Latched
Alarm, Latched
(EQ 5.19)
5–75