GE Feeder Management Relay 750 User Manual

2-6 750/760 Feeder Management Relay GE Multilin
2.2 SPECIFICATIONS 2 INTRODUCTION
2
2.2SPECIFICATIONS 2.2.1 APPLICABILITY
APPLICABILITY
Systems: 3 or 4 wire, 600 kV maximum
5000 A maximum
Frequency: 25 to 60 Hz nominal (frequency tracking
allows operation from 16 to 65 Hz)
2.2.2 INPUTS
CONTROL POWER
Options: LO/HI (specified when ordering)
LO range: DC = 20 to 60 V
AC = 20 to 48 V at 48 to 62 Hz.
HI range: DC = 88 to 300 V
AC = 70 to 265 V at 48 to 62 Hz.
Power: 25 VA nominal, 35 VA maximum
Voltage loss hold-up time: 30 ms
PHASE CURRENT
Source CT: 1 to 50000 A primary,
1 or 5 A secondary
Relay input: 1 A or 5 A (specified when ordering)
Burden: Less than 0.2 VA at 1 or 5 A
Conversion range: 0.01 to 20 × CT
(fundamental frequency only)
Accuracy: at < 2 × CT: ±0.5% of 2 × CT
at
≥ 2 × CT: ±1% of 20 × CT
Overload withstand: 1 second at 80 × rated current
continuous at 3 × rated current
Calculated neutral current errors: 3 × phase inputs
GROUND CURRENT
Source CT: 1 to 50000 A primary,
1 or 5 A secondary
Relay input: 1 A or 5 A (specified when ordering)
Burden: Less than 0.2 VA at 1 or 5 A
Conversion range: 0.01 to 20 × CT
(fundamental frequency only)
Accuracy: at < 2 × CT: ±0.5% of 2 × CT
at
≥ 2 × CT: ±1% of 20 × CT
Overload withstand: 1 second at 80 × rated current
continuous at 3 × rated current
SENSITIVE GROUND CURRENT
Source CT: 1 to 50000 A primary,
1 or 5 A secondary
Relay input: 1 A or 5 A (specified when ordering)
Burden: Less than 0.2 VA at 1 or 5 A
Conversion range: Low end: 0.005 × CT
Maximum: 500 A primary
(fundamental frequency only)
Accuracy: at < 0.1 × CT: ±0.2% of 1 × CT
at ≥ 0.1 × CT: ±1% of 1 × CT
Overload withstand: 1 second at 80 × rated current
continuous at 3 × rated current
BUS AND LINE VOLTAGE
Source VT: 0.12 to 600 kV / 50 to 240 V
Source VT ratio: 1 to 5000 in steps of 0.1
Relay input: 50 to 240 V phase-neutral
Burden: Less than 0.025 VA at 120 V
or > 576 KW
Maximum continuous: 273 V phase-neutral (full-scale) CT
(fundamental frequency only)
Accuracy (0 to 40°C): ±0.25% of full scale (10 to 130 V);
±0.8% of full scale (130 to 273 V)
(For open delta, the calculated phase
has errors 2 times those shown above)
LOGIC INPUTS
Inputs: 14 contact and / or virtual inputs,
6 virtual only (functions assigned to logic
inputs)
Dry contacts: 1000 Ω maximum ON resistance
(32 V DC at 2 mA provided by relay)
Wet contacts: 30 to 300 V DC at 2.0 mA
(External DC voltage only)
ANALOG INPUTS
Current Input: 0 to 1 mA, 0 to 5 mA, 0 to 10 mA, 0 to 20
mA, or 4 to 20 mA (programmable)
Input Impedance: 375 Ω ± 10%
Conversion Range: 0 to 21 mA
Accuracy: ±1% of full scale
TRIP AND CLOSE COIL MONITORING
Acceptable voltage range: 20 to 250 V DC
Trickle current: 2 to 5 mA
IRIG-B
Amplitude modulated: 2.5 to 6 Vpk-pk at 3:1 signal ratio
DC shift: TTL
Input impedance: 20 kΩ ±10%
Error: ±1.0 ms
Courtesy of NationalSwitchgear.com

GE Feeder Management Relay 750 Specifications

General

Brand	GE
Model	Feeder Management Relay 750
Category	Protection Device
Language	English