GE G60 UR Series, Instruction Manual

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2-10 G60 Generator Protection System GE Multilin
2.2 SPECIFICATIONS 2 PRODUCT DESCRIPTION
2
2.2SPECIFICATIONS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
2.2.1 PROTECTION ELEMENTS
The operating times below include the activation time of a trip rated form-A output contact unless otherwise indi-
cated. FlexLogic™ operands of a given element are 4 ms faster. This should be taken 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 power system devices via communications or different output contacts.
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):
Reach: 0.02 to 500
Ω
in steps of 0.01
Characteristic angle: 60 to 90° in steps of 1
Left Blinder (Quad only):
Reach: 0.02 to 500
Ω
in steps of 0.01
Characteristic angle: 60 to 90° in steps of 1
Time delay: 0.000 to 65.535 s in steps of 0.001
Timing accuracy: ±3% or 4 ms, 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)
STATOR DIFFERENTIAL
Pickup: 0.050 to 1.00 pu in steps of 0.01
Slope 1 and 2: 1 to 100% in steps of 1
Break 1: 1.00 to 1.50 pu in steps of 0.01
Break 2: 1.50 to 30.00 pu in steps of 0.01
Operate time: <¾ cycle at I
diff
> 5 × pickup
RESTRICTED GROUND FAULT
Pickup: 0.005 to 30.000 pu in steps of 0.001
Dropout: 97 to 98% of pickup
Slope: 0 to 100% in steps of 1%
Pickup delay: 0 to 600.00 s in steps of 0.01
Dropout delay: 0 to 600.00 s in steps of 0.01
Operate time: <1 power system cycle
PHASE/NEUTRAL/GROUND TOC
Current: Phasor or RMS
Pickup level: 0.000 to 30.000 pu in steps of 0.001
Dropout level: 97% to 98% of pickup
Level accuracy:
for 0.1 to 2.0
×
CT: ±0.5% of reading or ±0.4% of rated
(whichever is greater)
for > 2.0
×
CT: ±1.5% of reading > 2.0
×
CT rating
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)
Timing accuracy: Operate at > 1.03
×
actual pickup
±3.5% of operate time or ±½ cycle
(whichever is greater)
PHASE/NEUTRAL/GROUND IOC
Pickup level: 0.000 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: <16 ms at 3
×
pickup at 60 Hz
(Phase/Ground IOC)
<20 ms at 3
×
pickup at 60 Hz
(Neutral IOC)
Timing accuracy: Operate at 1.5
×
pickup
±3% or ±4 ms (whichever is greater)
NOTE