GE Feeder Management Relay 750 Instruction Manual page 144

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