GE Multilin 745 User Manual

A2 Metering745
Transformer Management Relay
Actual Values
http://www.GEindustrial.com/multilin
6–12
GE Multilin
Loss of Life PATH: ACTUAL VALUES !" A2 METERING !" LOSS OF LIFE
The HOTTEST-SPOT WINDING TEMPERATURE is calculated from the ambient temperature
and the highest-load winding current. The
INSULATION AGING FACTOR is calculated
from the hottest-spot temperature. The
TOTAL ACCUM LOSS OF LIFE value displays the
total equivalent service hours of the transformer.
Analog Input PATH: ACTUAL VALUES ! A2 METERING !" ANALOG INPUT
The 745 provides the ability to monitor any external quantity via an auxiliary
current input called the Analog Input. The scaled value of the analog input is shown.
In this message, the name programmed in
S2 SYSTEM SETUP !" ANALOG INPUT !
ANALOG INPUT NAME is displayed instead of ANALOG INPUT (the factory default), and
the units programmed in
S2 SYSTEM SETUP !" ANALOG INPUT !" ANALOG INPUT UNITS
are displayed instead of “µA” (which is the factory default).
Power PATH: ACTUAL VALUES !" A2 METERING !" POWER ! W1(3) POWER
The 745 calculates and displays real, reactive, and apparent power as well as the
power factor for all of the available windings providing that the voltage sensing is
enabled. Power flowing into the power transformer is designated as source power
and power flowing out of the transformer is designated as load power.
Energy a) Main Menu
PATH: ACTUAL VALUES !" A2 METERING !" ENERGY
The 745 calculates and displays watthours and varhours for source and load
currents for all available windings, providing that the voltage sensing is enabled.
! LOSS OF LIFE [!] HOTTEST-SPOT WINDING
TEMPERATURE: 1°C
MESSAGE
INSULATION AGING
FACTOR: 0.0
MESSAGE
TOTAL ACCUM LOSS OF
LIFE: 0.00 hours
! ANALOG INPUT [!] ANALOG INPUT:
0 µA
! W1 POWER [!] W1 REAL POWER:
0 MW
MESSAGE
W1 REACTIVE POWER:
0 Mvar
MESSAGE
W1 APPARENT POWER:
0 MVA
MESSAGE
W1 POWER FACTOR:
0.00
! ENERGY [!] ! ENERGY DATA [!]
CLEAR
See page 6–13.
MESSAGE
! W1 ENERGY [!]
See page 6–13.
MESSAGE
! W2 ENERGY [!]
See page 6–13.
MESSAGE
! W3 ENERGY [!]
See page 6–13.

GE Multilin 745 Specifications

General

Brand	GE
Model	Multilin 745
Category	Relays
Language	English