Specifications; Protection Elements - GE B30 Instruction Manual

2.2 SPECIFICATIONS

2.2SPECIFICATIONS
SPECIFICATIONS 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
2
NOTE 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.
BUS DIFFERENTIAL (87B)
Pickup level:
Low slope:
High slope:
Low breakpoint:
High breakpoint:
High set level:
Dropout level:
Level accuracy:
0.1 to 2.0 × CT rating: ±0.5% of reading or ±1% of rated (which-
>2.0 × CT rating
Operating time:
Number of zones:
CT TROUBLE
Responding to:
Pickup level:
Pickup delay:
PHASE/NEUTRAL/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:
2-10
0.050 to 2.000 pu in steps of 0.001
15 to 100% in steps of 1
50 to 100% in steps of 1
1.00 to 30.00 pu in steps of 0.01
1.00 to 30.00 pu in steps of 0.01
0.10 to 99.99 pu in steps of 0.01
97 to 98% of pickup
ever is greater)
±1.5% of reading
one power system cycle (typical)
2
Differential current
0.020 to 2.000 pu in steps of 0.001
1.0 to 60.0 sec. in steps of 0.1
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)
Operate at > 1.03 × actual pickup
±3.5% of operate time or ±½ cycle
(whichever is greater)
B30 Bus Differential System
2 PRODUCT DESCRIPTION

2.2.1 PROTECTION ELEMENTS

PHASE/NEUTRAL/GROUND IOC
Current: Phasor only
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
<16 ms at 3 × pickup at 60 Hz
Operate time:
(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)
PHASE UNDERVOLTAGE
Pickup level: 0.000 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
Timing accuracy: Operate at < 0.90 × pickup
±3.5% of operate time or ±4 ms (which-
ever is greater)
Operate time: <30 ms at 0.9 pickup at 60 Hz for Defi-
nite Time mode
NEUTRAL OVERVOLTAGE
Pickup level: 0.000 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 s in steps of 0.01 (definite
time) or user-defined curve
Reset delay: 0.00 to 600.00 s in steps of 0.01
Timing accuracy: ±3% or ±20 ms (whichever is greater)
Operate time: < 30 ms at 1.10 × pickup at 60 Hz
GE Multilin