GE Multilin
745 Transformer Management Relay
1-7
1 PRODUCT OVERVIEW
1.2 SPECIFICATIONS
1
1.2.4 OUTPUTS
ANALOG OUTPUTS
Number of Outputs:
7
Output Range:
0-1 mA, 0-5 mA, 0-10 mA, 0-20 mA, or
4-20 mA
Maximum Load:
10 k
Ω
at 0 to 1 mA
600
Ω
at 4 to 20 mA
Isolation:
Fully isolated
Accuracy:
±1% of full scale
SOLID STATE OUTPUT
Maximum Ratings:
Make & Carry 15 A at 250 V DC for 500
ms
TRIP RELAYS 2 TO 5
Configuration:
Form A (breaker trip rated)
Contact Material:
silver alloy
Max Ratings:
300 V AC, 250 V DC, 15 A, 1500 VA
AUXILIARY 6 TO 8 RELAYS, SELF-TEST RELAY 9
Configuration:
Form C
Contact Material:
silver alloy
Max Ratings:
300 V AC, 250 V DC, 15 A, 1500 VA
1.2.5 MISCELLANEOUS
COMMUNICATIONS
All Ports:
300 to 19200 baud, programmable par-
ity, Modbus RTU protocol, DNP
CLOCK
Resolution:
1 ms
Accuracy
±1 ms with IRIG-B
±1 minute/month without IRIG-B
Backup Battery Life:
10 years continuous use
HARMONICS
Range:
0.00 to 99.9%
Accuracy:
±
1% of Full Scale at 0.5
×
CT
THD
Range:
0.00 to 99.9%
Accuracy:
±1% of Full Scale at 0.5
×
CT
OPERATING ENVIRONMENT
Operating Temperature: –40°C to +60°C
Storage Temperature:
–40°C to +80°C ambient
Humidity:
up to 90% non-condensing
Altitude:
2000 m
Pollution degree:
II
CASE
Drawout:
Fully drawout unit (automatic CT shorts)
Seal:
Seal provision
Door:
Dust tight door
Panel:
Panel or 19" rack mount
Weight (case and relay): 18 lbs., 6 oz.
IP class:
X0
PRODUCTION TESTS
Thermal:
Operational test at ambient then increas-
ing to 60°C
Dielectric Strength:
Per IEC 255-5 and ANSI/IEEE C37.90
On CT inputs, VT inputs, Control Power
inputs, Switch inputs, and Relay outputs
(2 kV for 1 second)
RELAYS: 2-5 TRIP
VOLTAGE
MAKE/CARRY
CONTINUOUS
MAKE/
CARRY 0.2S
BREAK
MAX
LOAD
DC
Resistive
30 V DC
20 A
40 A
10 A
300 W
125 V DC
20 A
40 A
0.8 A
300 W
250 V DC
20 A
40 A
0.4 A
300 W
DC
Inductive
L/R = 40 ms
30 V DC
20 A
40 A
5 A
150 W
125 V DC
20 A
40 A
0.3 A
150 W
250 V DC
20 A
40 A
0.2 A
150 W
AC
Resistive
120 V AC
20 A
80 A
20 A
5000 VA
240 V AC
20 A
80 A
20 A
5000 VA
AC
Inductive
PF = 0.4
120 V AC
20 A
80 A
8 A
5000 VA
240 V AC
20 A
80 A
7 A
5000 VA
RELAYS: 6-8 AUXILIARY, 9 SELF-TEST
VOLTAGE
MAKE/CARRY
CONTINUOUS
MAKE/
CARRY 0.2S
BREAK
MAX
LOAD
DC
Resistive
30 V DC
10 A
30 A
10 A
300 W
125 V DC
10 A
30 A
0.5 A
62.5 W
250 V DC
10 A
30 A
0.3 A
75 W
DC
Inductive
L/R = 40 ms
30 V DC
10 A
30 A
5 A
150 W
125 V DC
10 A
30 A
0.25 A
31.3 W
250 V DC
10 A
30 A
0.15 A
37.5 W
AC
Resistive
120 V AC
10 A
30 A
10 A
2770 VA
240 V AC
10 A
30 A
10 A
2770 VA
AC
Inductive
PF = 0.4
120 V AC
10 A
30 A
4 A
480 VA
240 V AC
10 A
30 A
3 A
750 VA
Содержание TRANSFORMER MANAGEMENT RELAY 745
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