Specifications; Protection Elements - GE G60 Instruction Manual

2 PRODUCT DESCRIPTION
2.2SPECIFICATIONSSPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
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 IEDs or
NOTE
power system devices via communications or different output contacts. If not specified, operate times are given
here for a 60 Hz system at nominal system frequency. Operate times for a 50 Hz system are 1.2 times longer.
PHASE DISTANCE
Characteristic: mho (memory polarized or offset) or
quad (memory polarized or non-direc-
tional), selectable individually per zone
Number of zones: 3
Directionality: forward, reverse, or non-directional per
zone
Reach (secondary Ω): 0.02 to 500.00 Ω in steps of 0.01
Reach accuracy: ±5% including the effect of CVT tran-
sients up to an SIR of 30
Distance:
Characteristic angle: 30 to 90° in steps of 1
Comparator limit angle: 30 to 90° in steps of 1
Directional supervision:
Characteristic angle: 30 to 90° in steps of 1
Limit angle: 30 to 90° in steps of 1
Right blinder (Quad only):
0.02 to 500 Ω in steps of 0.01
Reach:
Characteristic angle: 60 to 90° in steps of 1
Left Blinder (Quad only):
0.02 to 500 Ω in steps of 0.01
Reach:
Characteristic angle: 60 to 90° in steps of 1
Time delay: 0.000 to 65.535 s in steps of 0.001
Timer accuracy: ±3% of operate time or ±1/4 cycle
(whichever is greater)
Current supervision:
Level: line-to-line current
Pickup: 0.050 to 30.000 pu in steps of 0.001
Dropout: 97 to 98%
Memory duration: 5 to 25 cycles in steps of 1
VT location: all delta-wye and wye-delta transformers
CT location: all delta-wye and wye-delta transformers
Voltage supervision pickup (series compensation applications):
0 to 5.000 pu in steps of 0.001
Operation time: 1 to 1.5 cycles (typical)
Reset time: 1 power cycle (typical)
GE Multilin
STATOR DIFFERENTIAL
Pickup:
Slope 1 and 2:
Break 1:
Break 2:
Operate time:
RESTRICTED GROUND FAULT
Pickup:
Dropout:
Slope:
Level accuracy:
0.1 to 2.0 x CT rating:
>2.0 x CT rating
Pickup delay:
Dropout delay:
Operate time:
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:
G60 Generator Protection System

2.2 SPECIFICATIONS

2.2.1 PROTECTION ELEMENTS

0.050 to 1.00 pu in steps of 0.01
1 to 100% in steps of 1
1.00 to 1.50 pu in steps of 0.01
1.50 to 30.00 pu in steps of 0.01
<¾ cycle at I > 5 × pickup
diff
0.005 to 30.000 pu in steps of 0.001
97 to 98% of pickup
0 to 100% in steps of 1%
±0.5% of reading or ±1% of rated (which-
ever is greater)
±1.5% of reading
0 to 600.00 s in steps of 0.01
0 to 600.00 s in steps of 0.01
<1 power system cycle
Phasor or RMS
0.000 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, Short/Very/
2
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 relationship
2
2-15