Protection Elements - GE F35 Instruction Manual

CHAPTER 2: PRODUCT DESCRIPTION

2.5.1 Protection elements

The operating times include the activation time of a trip rated form-A output contact unless otherwise indicated. FlexLogic
operands of a given element are 4 ms faster. Take this into account when using FlexLogic to interconnect with other
protection or control elements of the relay, building FlexLogic equations, or interfacing with other intelligent electronic
devices (IEDs) or power system devices via communications or different output contacts. If not specified, the operate times
given here are for a 60 Hz system at nominal system frequency. Operate times for a 50 Hz system are 1.2 times longer.
PHASE/NEUTRAL/GROUND TOC
Current:
Pickup level:
Dropout level:
Level accuracy:
0.1 to 2.0 × CT:
> 2.0 × CT:
Curve shapes:
Curve multiplier:
Reset type:
Curve timing accuracy at 1.03 to 20 x pickup:
Voltage restraint:
PHASE/NEUTRAL/GROUND IOC
Pickup level:
Dropout level:
Level accuracy:
0.1 to 2.0 × CT rating:
> 2.0 × CT rating:
Overreach:
Pickup delay:
Reset delay:
Operate time:
Timer accuracy:
NEGATIVE SEQUENCE TOC
Pickup level:
Dropout level:
Level accuracy:
Curve shapes:
Curve multiplier (Time dial):
Reset type:
Curve timing accuracy
at 1.03 to 20 x pickup:
NEGATIVE SEQUENCE IOC
Pickup level:
Dropout level:
F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Phasor or RMS
0.020 to 30.000 pu in steps of 0.001
97% to 98% of pickup
±0.5% of reading or ±0.4% of rated (whichever is greater)
±1.5% of reading > 2.0 × CT rating
IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse,
2
Short/Very/ Extremely Inverse; I t; FlexCurves™ (programmable); Definite Time (0.01 s base
curve)
Time Dial = 0.00 to 600.00 in steps of 0.01
Instantaneous/Timed (per IEEE)
±3.5% of operate time or ±½ cycle (whichever is greater) from pickup to operate
Modifies pickup current for voltage in the range of 0.1 < V < 0.9 VT Nominal in a fixed linear rela-
tionship
0.020 to 30.000 pu in steps of 0.001
97 to 98% of pickup
±0.5% of reading or ±0.4% of rated (whichever is greater)
±1.5% of reading
<2%
0.00 to 600.00 s in steps of 0.01
0.00 to 600.00 s in steps of 0.01
<16 ms at 3 × pickup at 60 Hz (Phase/Ground IOC)
<20 ms at 3 × pickup at 60 Hz (Neutral IOC)
±3% of operate time or ±1/4 cycle (whichever is greater)
0.020 to 30.000 pu in steps of 0.001
97% to 98% of pickup
±0.5% of reading or ±0.4% of rated (whichever is greater)
from 0.1 to 2.0 x CT rating
±1.5% of reading > 2.0 x CT rating
IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse,
2
Short/Very/ Extremely Inverse; I t; FlexCurves™ (programmable); Definite Time (0.01 s base
curve)
0.00 to 600.00 in steps of 0.01
Instantaneous/Timed (per IEEE) and Linear
±3.5% of operate time or ±½ cycle (whichever is greater) from pickup to operate
0.020 to 30.000 pu in steps of 0.001
97 to 98% of pickup
SPECIFICATIONS
2
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