GE Multilin 565 Instruction Manual page 88

SETPOINTS MODE - DEMAND METERING
Location Message Line
S 10.1
SETPOINTS
DEMAND METERING
S 10.2
AMPS DEMAND
Messages S 10.3 to S 10.6 will only appear if ENABLED is selected in message S 10.2.
S 10.3
AMPS DEMAND TIME
PERIOD
S 10.4
AMPS DEMAND
L
ALARM DISABLED
A
Messages S 10.5 and S 10.6 will only appear if ENABLED is selected in message S 10.4.
S 10.5
AMP DEMAND ALARM
L
LEVEL
A
S 10.6
AMP DEMAND ALARM
L
RELAY
A
The following messages will only be displayed if the Metering Transducer Module (MTM) has been enabled in page 4 of
setpoints. Note that these features only function when an Option Card is installed.
S 10.7
KW DEMAND
Messages S 10.8 to S 10.11 will only appear if ENABLED is selected in message S 10.7.
S 10.8
KW DEMAND TIME
PERIOD
S 10.9
KW DEMAND ALARM
DISABLED
5-44
Description
Setpoints page 10 header. In this page are the setpoints which set up the
demand metering functions.
This message allows the user to enable or disable the Amps Demand
feature. If this feature is disabled, the Peak Amps Demand value will be the
ENABLED
last peak value before the function was disabled. The peak amps demand
of each phase is obtained by a "sliding window" averaging scheme by
which the current (averaged RMS values) is monitored at 1 minute
intervals over the chosen demand time window and stored in memory. The
demand time window is user selectable over the range 5–120 min. in 1 min.
steps. The peak demand amps is updated only when the demand window
current average exceeds the previous stored peak value.
The 565/575 also allows the user to select and store an alarm level for
peak demand which can be assigned to an output relay.
This message allows the user to specify Amps Demand time period. The
range of values is 5 to 120 in steps of 1 minute. This value is essentially the
5 MIN
number of RMS current values used to determine the current demand.
NOTE: If this setpoint or the Phase CT Primary Rating are changed, the
Amps Demand function will be reset and the Peak Demand values shown
in the Meter Data will be cleared.
This message allows users to enable or disable the alarm function.
The Amps Demand alarm level is specified here. The range of values
allowed is 10 to 5000 in steps of 5 amps.
100 A
This message allows users to assign Aux.1 and/or Aux.2 relays to the
alarm. When an alarm occurs, the selected relay will be activated.
AUX1
This message allows the user to enable or disable the kW demand feature.
If this feature is disabled the peak kW demand value will be the last peak
ENABLED
value before the feature was disabled.
This message allows the user to specify the time period over which the kW
demand is calculated. The range of values is 5 to 120 minutes in steps of
5 MIN
1 minute. NOTE: If this setpoint or the Phase CT Primary rating are
changed the kW demand function will be reset and the peak kW demand
value shown in the Metering Data will be cleared.
This message allows the user to enable or disable the alarm function.