Table of Contents
Advertisement
2.2 SPECIFICATIONS
NEUTRAL DIRECTIONAL OVERCURRENT
Directionality:
Polarizing:
Polarizing voltage:
Polarizing current:
Operating current:
Level sensing:
2
Restraint, K:
Characteristic angle:
Limit angle:
Angle accuracy:
Offset impedance:
Pickup level:
Dropout level:
Operation time:
PHASE UNDERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Curve shapes:
Curve multiplier:
Timing accuracy:
AUXILIARY UNDERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Curve shapes:
Curve multiplier:
Timing accuracy:
PHASE OVERVOLTAGE
Voltage:
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Operate time:
Timing accuracy:
NEUTRAL OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Timing accuracy:
Operate time:
2-12
Co-existing forward and reverse
Voltage, Current, Dual
V_0 or VX
IG
I_0
3 × (|I_0| – K × |I_1|), IG
Independent for forward and reverse
0.000 to 0.500 in steps of 0.001
–90 to 90° in steps of 1
40 to 90° in steps of 1, independent for
forward and reverse
±2°
0.00 to 250.00 Ω in steps of 0.01
0.002 to 30.000 pu in steps of 0.01
97 to 98%
< 16 ms at 3 × pickup at 60 Hz
0.000 to 3.000 pu in steps of 0.001
102 to 103% of pickup
±0.5% of reading from 10 to 208 V
GE IAV Inverse;
Definite Time (0.1s base curve)
Time dial = 0.00 to 600.00 in steps of
0.01
Operate at < 0.90 × pickup
±3.5% of operate time or ±4 ms (which-
ever is greater)
0.000 to 3.000 pu in steps of 0.001
102 to 103% of pickup
±0.5% of reading from 10 to 208 V
GE IAV Inverse, Definite Time
Time Dial = 0 to 600.00 in steps of 0.01
±3% of operate time or ±4 ms
(whichever is greater)
Phasor only
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
0.00 to 600.00 in steps of 0.01 s
< 30 ms at 1.10 × pickup at 60 Hz
±3% or ±4 ms (whichever is greater)
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
0.00 to 600.00 s in steps of 0.01 (definite
time) or user-defined curve
0.00 to 600.00 s in steps of 0.01
±3% or ±20 ms (whichever is greater)
< 30 ms at 1.10 × pickup at 60 Hz
T60 Transformer Protection System
2 PRODUCT DESCRIPTION
AUXILIARY OVERVOLTAGE
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 to 600.00 s in steps of 0.01
Reset delay:
0 to 600.00 s in steps of 0.01
Timing accuracy:
±3% of operate time or ±4 ms
(whichever is greater)
< 30 ms at 1.10 × pickup at 60 Hz
Operate time:
VOLTS PER HERTZ
Voltage:
Phasor only
Pickup level:
0.80 to 4.00 in steps of 0.01 pu V/Hz
Dropout level:
97 to 98% of pickup
Level accuracy:
±0.02 pu
Timing curves:
Definite Time; Inverse A, B, and C,
FlexCurves™ A, B, C, and D
TD Multiplier:
0.05 to 600.00 s in steps of 0.01
Reset delay:
0.0 to 1000.0 s in steps of 0.1
Timing accuracy:
±3% or ±15 cycles (whichever is greater)
for values greater than 1.1 × pickup
TRANSFORMER HOTTEST-SPOT TEMPERATURE
Operating quantity:
computed temperature in °C
Pickup level:
50 to 300°C in steps of 1
Dropout level:
1°C below pickup
Pickup delay:
0 to 30000 min. in steps of 1
TRANSFORMER AGING FACTOR
Operating quantity:
computed aging acceleration factor (pu)
Pickup level:
1 to 10 pu in steps of 0.1
Pickup delay:
0 to 30000 min. in steps of 1
TRANSFORMER LOSS OF LIFE
Operating quantity:
computed accumulated transformer loss
of life, in hours
Pickup level:
0 to 500000 hours in steps of 1
UNDERFREQUENCY
Minimum signal:
0.10 to 1.25 pu in steps of 0.01
Pickup level:
20.00 to 65.00 Hz in steps of 0.01
Dropout level:
pickup + 0.03 Hz
Level accuracy:
±0.001 Hz
Time delay:
0 to 65.535 s in steps of 0.001
Timer accuracy:
±3% or 4 ms, whichever is greater
Operate time:
typically 4 cycles at 0.1 Hz/s change
typically 3.5 cycles at 0.3 Hz/s change
typically 3 cycles at 0.5 Hz/s change
Typical times are average operate times including variables such
as frequency change instance, test method, etc., and may vary by
±0.5 cycles.
OVERFREQUENCY
Pickup level:
20.00 to 65.00 Hz in steps of 0.01
Dropout level:
pickup – 0.03 Hz
Level accuracy:
±0.001 Hz
Time delay:
0 to 65.535 s in steps of 0.001
Timer accuracy:
±3% or 4 ms, whichever is greater
Operate time:
typically 4 cycles at 0.1 Hz/s change
typically 3.5 cycles at 0.3 Hz/s change
typically 3 cycles at 0.5 Hz/s change
GE Multilin
Advertisement
Table of Contents
