GE 745 TRANSFORMER MANAGEMENT RELAY User Manual

GE Power Management 745 Transformer Management Relay 1-9
1 PRODUCT OVERVIEW 1.2 TECHNICAL SPECIFICATIONS
1
1.2.4 OUTPUTS
Analog Outputs (7)
Output Range: 0-1 mA, 0-5 mA, 0-10 mA, 0-20 mA, or 4-20 mA
Maximum Load: 0-1 mA: 10 kΩ
4-20 mA: 600 Ω
Isolation: Fully isolated
Accuracy: ± 1% of full scale
Solid State Output
Maximum Ratings: Make & Carry 15 A at 250 V DC for 500 ms
Output Relays
Configuration: 2-5 TRIP: Form A (breaker trip rated)
6-8 AUXILIARY: Form C
9 SELF-TEST: Form C
Contact Material: silver alloy
Max Ratings: 300 V AC, 250 V DC, 15 A, 1500 VA
COMMUNICATIONS
All Ports: 300 to 19200 baud, programmable parity, Modbus RTU protocol, DNP
CLOCK
Resolution: 1 ms
Accuracy with IRIG-B: ±1 ms
without IRIG-B: ±1 minute/month
Backup Battery Life: 10 years continuous use
HARMONICS
Individual Range: 0.00 to 99.9%
Accuracy: ±1% of Full Scale @ 0.5 x CT
THD Range: 0.00 to 99.9%
Accuracy: ±1% of Full Scale @ 0.5 x CT
OPERATING ENVIRONMENT
Operating Temperature Range: –40 ° C to +60 ° C
Ambient Storage Temperature: –40
° C to +80 ° C
Humidity: up to 90% non-condensing
Altitude: 2000 m
Pollution degree: II
RELAYS: 2-5 TRIP RELAYS: 6-8 AUXILIARY, 9 SELF-TEST
VOLTAGE MAKE/CARRY
CONTINUOUS
MAKE/
CARRY 0.2s
BREAK MAX
LOAD
VOLTAGE MAKE/CARRY
CONTINUOUS
MAKE/
CARRY 0.2s
BREAK MAX
LOAD
DC
Resistive
30 V DC 20 A 40 A 10 A 300 W DC
Resistive
30 V DC 10 A 30 A 10 A 300 W
125 V DC 20 A 40 A 0.8 A 300 W 125 V DC 10 A 30 A 0.5 A 62.5 W
250 V DC 20 A 40 A 0.4 A 300 W 250 V DC 10 A 30 A 0.3 A 75 W
DC
Inductive
L/R = 40 ms
30 V DC 20 A 40 A 5 A 150 W DC
Inductive
L/R = 40 ms
30 V DC 10 A 30 A 5 A 150 W
125 V DC 20 A 40 A 0.3 A 150 W 125 V DC 10 A 30 A 0.25 A 31.3 W
250 V DC 20 A 40 A 0.2 A 150 W 250 V DC 10 A 30 A 0.15 A 37.5 W
AC
Resistive
120 V AC 20 A 80 A 20 A 5000 VA AC
Resistive
120 V AC 10 A 30 A 10 A 2770 VA
240 V AC 20 A 80 A 20 A 5000 VA 240 V AC 10 A 30 A 10 A 2770 VA
AC Inductive
PF = 0.4
120 V AC 20 A 80 A 8 A 5000 VA AC Inductive
PF = 0.4
120 V AC 10 A 30 A 4 A 480 VA
240 V AC 20 A 80 A 7 A 5000 VA 240 V AC 10 A 30 A 3 A 750 VA

GE 745 TRANSFORMER MANAGEMENT RELAY Specifications

General

Brand	GE
Model	745 TRANSFORMER MANAGEMENT RELAY
Category	Relays
Language	English