5-80 750/760 Feeder Management Relay GE Multilin
5.7 S6 MONITORING 5 SETPOINTS
5
c) REAL POWER DEMAND
PATH: SETPOINTS ÖØ S6 MONITORING ÖØ DMND ÖØ REAL PWR
The real power demand is monitored by comparing to a pickup value. If the real power demand pickup is ever exceeded,
the relay can be configured to cause an alarm or signal an output relay.
For the THERMAL 90% RESPONSE TIME setpoint, enter the time required for a steady state power to indicate 90% of the
actual value. This setpoint allows the user to approximately match the response of the relay to analog instruments. For the
TIME INTERVAL setpoint, enter the time period over which the real power demand calculation is to be performed. For the
REAL POWER DMND PICKUP setpoint, power quantities auto-range to show units appropriate to the power system size.
Figure 5–42: REAL POWER DEMAND LOGIC
îš„ REAL PWR
îš„ [ENTER] for more
REAL PWR DMND
FUNCTION: Disabled
Range: Disabled, Alarm, Latched Alarm, Control
MEASUREMENT TYPE:
Block Interval
Range: Thermal Exponential, Block Interval, Rolling
Demand. See page 5–78 for details.
THERMAL 90% RESPONSE
TIME: 15 min
Range: 5 min, 10 min, 15 min, 20 min, 30 min, 60 min
Seen only if MEASUREMENT TYPE is "Thermal
Exponential"
TIME INTERVAL:
20 min
Range: 5 min, 10 min, 15 min, 20 min, 30 min, 60 min
Seen only if MEASUREMENT TYPE is "Block
Interval" or "Rolling Demand"
REAL PWR DMND
RELAYS (3-7): -----
Range: Any combination of the 3 to 7 Auxiliary Relays.
See 5.6.1: Overview on page 5–32 for details.
REAL PWR DMND
PICKUP: 10.0 MW
Range: 0.1 to 3000.0 MW in steps of 0.1
See 5.6.1: Overview on page 5–32 for details.
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Courtesy of NationalSwitchgear.com
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