Technical Specifications; Applicability; Inputs - GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual

1 PRODUCT OVERVIEW

1.2 TECHNICAL SPECIFICATIONS

Transformers:
Frequency:
CONTROL POWER (POWER SUPPLY)
Options:
LO Range:
HI Range:
Power:
Fuse (not accessible):
PHASE CURRENT INPUT
Source CT:
Relay Input:
Burden:
Conversion Range:
Accuracy:
Overload Withstand:
GROUND CURRENT INPUT
Source CT:
Relay Input:
Burden:
Conversion Range:
Accuracy:
Overload Withstand:
VOLTAGE INPUTS
Source VT:
Source VT Ratio:
Relay Input:
Burden:
Max. Continuous:
Accuracy:
LOGIC INPUTS (16)
Dry Contacts:
Wet Contacts:
GE Power Management
2 Winding or 3 Winding
50 or 60 Hz nominal
(frequency tracking allows operation from 2 to 65 Hz)
LO/HI (specified when ordering)
DC = 20 to 60 V; AC = 20 to 48 V @ 48 to 62 Hz
DC = 90 to 300 V; AC = 70 to 265 V @ 48 to 62 Hz
30 VA nominal, 40 VA maximum
Hi-Volt: Current rating: 3.15 A
Type: 5 × 20 mm Slow-Blow Littelfuse, High Breaking Capacity
Model #: 2153.15
Low-Volt: Current rating: 3.15 A
Type: 5 × 20 mm Slow-Blow Littelfuse, High Breaking Capacity
Model #: 2153.15
1 to 50000 A primary / 1 or 5 A secondary
1 A or 5 A (specified when ordering)
Less than 0.2 VA at rated load per phase
0.02 to 46 × CT
at < 4 x CT: ± 0.25% of 4 × CT (± 0.01 × CT)
at ≥ 4 x CT: ± 0.5% of 46 × CT (± 0.2 × CT)
1 second at 80 times rated current
2 seconds at 40 times rated current
continuous at 3 times rated current
1 to 50000 A primary / 1 or 5 A secondary
1 A or 5 A (specified when ordering)
Less than 0.2 VA at rated load
0.02 to 46 × CT
at < 4 × CT: ± 0.25% of 4 x CT (± 0.01 × CT)
at ≥ 4 × CT: ± 0.5% of 46 x CT (± 0.2 × CT)
1 second at 80 times rated current
2 seconds at 40 times rated current
continuous at 3 times rated current
2 to 600 kV / 60 to 120 V
1 to 5000 in steps of 1
60 V to 120 V phase-neutral
Less than 0.025 VA at 120 V
273 V
± 1% of 2 × VT (± 0.02 × VT)
1000 Ω maximum ON resistance (32 V DC at 2 mA provided by 745)
Inputs 1 to 16: 30 to 300 V DC at 1.5 mA
745 Transformer Management Relay
1.2 TECHNICAL SPECIFICATIONS

1.2.1 APPLICABILITY

1.2.2 INPUTS

1
1-5