GE Multilin 745 User Manual

S2 System Setup
745
Transformer Management Relay
Setpoints
http://www.GEindustrial.com/multilin
5–37
GE Multilin
Select “Block Interval” to calculate a linear average of the current over the
programmed demand
TIME INTERVAL, starting daily at 00:00:00 (that is, 12 am).
The 1440 minutes per day is divided into the number of blocks as set by the
programmed time interval. Each new value of demand becomes available at the
end of each time interval.
Select “Rolling Demand” to calculate a linear average of the current over the
programmed demand
TIME INTERVAL (in the same way as Block Interval above).
The value is updated every minute and indicates the demand over the time
interval just preceding the time of update.
• THERMAL 90% RESPONSE TIME: This message is displayed only when the
CURRENT DEMAND METER TYPE is set for “Thermal”. Enter the time required for a
steady-state current to indicate 90% of actual value.
• TIME INTERVAL: This message is displayed only when the
CURRENT DEMAND
METER TYPE is set for “Block Interval” or “Rolling Demand”. Enter the time period
over which the current demand calculation is performed.
The
TIME INTERVAL is only displayed when “Block Interval” or “Rolling Demand” is
selected for the
CURRENT DEMAND METER TYPE.
Analog Outputs 1 to 7 PATH: SETPOINTS !" S2 SYSTEM SETUP !" ANALOG OUTPUTS ! ANALOG OUTPUT 1(7)
There are seven analog outputs on the 745 relay which are selected to provide a
full-scale output range of one of 0 to 1 mA, 0 to 5 mA, 4 to 20 mA, 0 to 20 mA or
0 to 10 mA. Each channel can be programmed to monitor any measured parameter.
This sub-section is only displayed with the option installed.
• ANALOG OUTPUT 1(7) FUNCTION: This message enables or disables the
Analog Output 1(7) feature. When disabled, 0 mA will appear at the
corresponding terminal.
Time (min)
0
20
40
60
80
100
0 3 6 9 12 15 18 21 24 27 30
Demand (%)
NOTE
! ANALOG OUTPUT 1 [!] ANALOG OUTPUT 1
FUNCTION: Disabled
Range: Enabled, Disabled
MESSAGE
ANALOG OUTPUT 1
VALUE: W1
ΦA Current
Range: see table below
MESSAGE
ANALOG OUTPUT 1
RANGE: 4-20 mA
Range: 0-1 mA, 0-5 mA, 4-20 mA, 0-20
mA, 0-10 mA
MESSAGE
ANALOG OUTPUT 1
MIN: 0 A
Range: matches the range of the
selected measured parameter
MESSAGE
ANALOG OUTPUT 1
MAX: 1000 A
Range: matches the range of the
associated actual value

GE Multilin 745 Specifications

General

Brand	GE
Model	Multilin 745
Category	Relays
Language	English