GE t60 Instruction Manual page 29

2 PRODUCT DESCRIPTION
NEUTRAL DIRECTIONAL OVERCURRENT
Directionality: Co-existing forward and reverse
Polarizing: Voltage, Current, Dual
Polarizing voltage: V_0 or VX
Polarizing current: IG
Operating current: I_0
3 × (|I_0| – K × |I_1|), K = 0.0625; IG
Level sensing:
Independent for forward and reverse
Characteristic angle: –90 to 90° in steps of 1
Limit angle: 40 to 90° in steps of 1, independent for
forward and reverse
Angle accuracy: ±2°
0.00 to 250.00 Ω in steps of 0.01
Offset impedance:
Pickup level: 0.05 to 30.00 pu in steps of 0.01
Dropout level: 97 to 98%
< 16 ms at 3 × Pickup at 60 Hz
Operation time:
PHASE UNDERVOLTAGE
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 102 to 103% of Pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Curve shapes: GE IAV Inverse;
Definite Time (0.1s base curve)
Curve multiplier: Time Dial = 0.00 to 600.00 in steps of
0.01
Operate at < 0.90 × Pickup
Timing accuracy:
±3.5% of operate time or ±4 ms (which-
ever is greater)
AUXILIARY UNDERVOLTAGE
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 102 to 103% of pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Curve shapes: GE IAV Inverse, Definite Time
Curve multiplier: Time Dial = 0 to 600.00 in steps of 0.01
Timing accuracy: ±3% of operate time or ±4 ms
(whichever is greater)
PHASE OVERVOLTAGE
Voltage: Phasor only
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 97 to 98% of Pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Pickup delay: 0.00 to 600.00 in steps of 0.01 s
< 30 ms at 1.10 × Pickup at 60 Hz
Operate time:
Timing accuracy: ±3% or ±4 ms (whichever is greater)
GE Multilin
NEUTRAL OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Timing accuracy:
Operate time:
AUXILIARY OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Timing accuracy:
Operate time:
VOLTS PER HERTZ
Voltage:
Pickup level:
Dropout level:
Level accuracy:
Timing curves:
TD Multiplier:
Reset delay:
Timing accuracy:
UNDERFREQUENCY
Minimum signal:
Pickup level:
Dropout level:
Level accuracy:
Time delay:
Timer accuracy:
OVERFREQUENCY
Pickup level:
Dropout level:
Level accuracy:
Time delay:
Timer accuracy:
T60 Transformer Management Relay
2.2 SPECIFICATIONS
0.000 to 1.250 pu in steps of 0.001
97 to 98% of Pickup
±0.5% of reading from 10 to 208 V
0.00 to 600.00 s in steps of 0.01
0.00 to 600.00 s in steps of 0.01
±3% or ±4 ms (whichever is greater)
< 30 ms at 1.10 × Pickup at 60 Hz
0.000 to 3.000 pu in steps of 0.001
97 to 98% of Pickup
±0.5% of reading from 10 to 208 V
0 to 600.00 s in steps of 0.01
0 to 600.00 s in steps of 0.01
±3% of operate time or ±4 ms
(whichever is greater)
< 30 ms at 1.10 × pickup at 60 Hz
Phasor only
0.80 to 4.00 in steps of 0.01 pu V/Hz
97 to 98% of Pickup
±0.02 pu
Definite Time; Inverse A, B, and C,
FlexCurves™ A, B, C, and D
0.05 to 600.00 s in steps of 0.01
0.0 to 1000.0 s in steps of 0.1
±3% or ± 4 ms (whichever is greater)
0.10 to 1.25 pu in steps of 0.01
20.00 to 65.00 Hz in steps of 0.01
Pickup + 0.03 Hz
±0.01 Hz
0 to 65.535 s in steps of 0.001
±3% or 4 ms, whichever is greater
20.00 to 65.00 Hz in steps of 0.01
Pickup – 0.03 Hz
±0.01 Hz
0 to 65.535 s in steps of 0.001
±3% or 4 ms, whichever is greater
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