CHAPTER 2: PRODUCT DESCRIPTION
SPECIFICATIONS
F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
2-19
2
Curve shapes:
IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse,
Short/Very/ Extremely Inverse; I
2
t; FlexCurves™ (programmable); Definite Time (0.01 s base
curve)
Curve multiplier (Time dial):
0.00 to 600.00 in steps of 0.01
Reset type:
Instantaneous/Timed (per IEEE) and Linear
Curve timing accuracy
at 1.03 to 20 x pickup:
±3.5% of operate time or ±½ cycle (whichever is greater) from pickup to operate
NEGATIVE SEQUENCE IOC
Pickup level:
0.020 to 30.000 pu in steps of 0.001
Dropout level:
97 to 98% of pickup
Level accuracy:
0.1 to 2.0
×
CT rating: ±0.5% of reading or ±0.4% of rated (whichever is greater);
>
2.0
×
CT rating:
±1.5% of reading
Overreach:
<
2%
Pickup delay:
0.00 to 600.00 s in steps of 0.01
Reset delay:
0.00 to 600.00 s in steps of 0.01
Operate time:
<20 ms at 3
×
pickup at 60 Hz
Timer accuracy:
±3% of operate time or ±1/4 cycle (whichever is greater)
WATTMETRIC ZERO-SEQUENCE DIRECTIONAL
Measured power:
zero-sequence
Number of elements:
4
Characteristic angle:
0 to 360° in steps of 1
Minimum power:
0.001 to 1.200 pu in steps of 0.001
Pickup level accuracy:
±1% or ±0.0025 pu, whichever is greater
Hysteresis:
3% or 0.001 pu, whichever is greater
Pickup delay:
definite time (0 to 600.00 s in steps of 0.01), inverse time, or FlexCurve
Inverse time multiplier:
0.01 to 2.00 s in steps of 0.01
Curve timing accuracy:
±3.5% of operate time or ±1 cycle (whichever is greater) from pickup to operate
Operate time:
<30 ms at 60 Hz
PHASE UNDERVOLTAGE
Pickup level:
0.004 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
Curve timing accuracy at <0.90 x pickup:
±3.5% of operate time or ±1/2 cycle (whichever is greater) from pickup to operate
Operate time:
<30 ms at 0.9 pickup at 60 Hz for Definite Time mode
AUXILIARY UNDERVOLTAGE
Pickup level:
0.004 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
Curve timing accuracy at <0.90 x pickup:
±3.5% of operate time or ±1/2 cycle (whichever is greater) from pickup to operate
Operate time:
<30 ms at 0.9 pickup at 60 Hz for Definite Time mode
PHASE OVERVOLTAGE
Voltage:
Phasor only
Pickup level:
0.004 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
