Specifications; Protection Elements - GE T35 Instruction Manual

2 PRODUCT DESCRIPTION
2.2SPECIFICATIONSSPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
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
NOTE
interfacing with other IEDs or power system devices via communications or different output contacts.
PERCENT DIFFERENTIAL
Characteristic: Differential Restraint pre-set
Number of zones: 2
Minimum pickup: 0.05 to 1.00 pu in steps of 0.001
Slope 1 range: 15 to 100% in steps of 1%
Slope 2 range: 50 to 100% in steps of 1%
Kneepoint 1: 1.0 to 2.0 pu in steps of 0.0001
Kneepoint 2: 2.0 to 30.0 pu in steps of 0.0001
nd
2 harmonic inhibit level: 1.0 to 40.0% in steps of 0.1
nd
2 harmonic inhibit function: Adaptive, Traditional, Disabled
nd
2 harmonic inhibit mode: Per-phase, 2-out-of-3, Average
th
5 harmonic inhibit range: 1.0 to 40.0% in steps of 0.1
Operate times:
Harmonic inhibits selected: 20 to 30 ms
No harmonic inhibits selected: 5 to 20 ms
Dropout level: 97 to 98% of pickup
Level accuracy: ±0.5% of reading or ±1% of rated
(whichever is greater)
INSTANTANEOUS DIFFERENTIAL
Pickup level: 2.00 to 30.00 pu in steps of 0.01
Dropout level: 97 to 98% of pickup
Level accuracy: ±0.5% of reading or ±1% of rated
(whichever is greater)
< 20 ms at 3 × pickup at 60 Hz
Operate time:
GE Multilin
PHASE/GROUND TOC
Current:
Pickup level:
Dropout level:
Level accuracy:
for 0.1 to 2.0 × CT:
for > 2.0 × CT:
Curve shapes:
Curve multiplier:
Reset type:
Timing accuracy:
BREAKER ARCING CURRENT
Principle:
Initiation:
Compensation for auxiliary relays: 0 to 65.535 s in steps of 0.001
Alarm threshold:
Fault duration accuracy: 0.25 of a power cycle
Availability:
T35 Transformer Management Relay

2.2 SPECIFICATIONS

2.2.1 PROTECTION ELEMENTS

Phasor or RMS
0.000 to 30.000 pu in steps of 0.001
97% to 98% of Pickup
±0.5% of reading or ±1% 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)
Operate at > 1.03 × actual Pickup
±3.5% of operate time or ±½ cycle
(whichever is greater)
2
accumulates breaker duty (I t) and mea-
sures fault duration
programmable per phase from any Flex-
Logic™ operand
0 to 50000 kA2-cycle in steps of 1
1 per CT bank with a minimum of 2
2
2-5