Neutral Current - GE B30 UR Series Instruction Manual

5 SETTINGS
Figure 5–52: PHASE INSTANTANEOUS OVERCURRENT 1 SCHEME LOGIC
a) NEUTRAL TIME OVERCURRENT (ANSI 51N, IEC PTOC)
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PATH: SETTINGS GROUPED ELEMENTS
 NEUTRAL TOC1
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The neutral time overcurrent element can provide a desired time-delay operating characteristic versus the applied current
or be used as a simple definite time element. The neutral current input value is a quantity calculated as 3Io from the phase
currents and may be programmed as fundamental phasor magnitude or total waveform RMS magnitude as required by the
application.
GE Multilin
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SETTING GROUP 1(6)

NEUTRAL CURRENT

NEUTRAL TOC1
FUNCTION: Disabled
NEUTRAL TOC1 SIGNAL
SOURCE: SRC 1
NEUTRAL TOC1
INPUT: Phasor
NEUTRAL TOC1
PICKUP: 1.000 pu
NEUTRAL TOC1
CURVE: IEEE Mod Inv
NEUTRAL TOC1
TD MULTIPLIER: 1.00
NEUTRAL TOC1
RESET: Instantaneous
NEUTRAL TOC1 BLOCK:
Off
NEUTRAL TOC1
TARGET: Self-reset
NEUTRAL TOC1
EVENTS: Disabled
B30 Bus Differential System
5.6 GROUPED ELEMENTS
5.6.5 NEUTRAL CURRENT
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NEUTRAL TOC1(6)
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
Range: Phasor, RMS
Range: 0.000 to 30.000 pu in steps of 0.001
Range: See OVERCURRENT CURVE TYPES table
Range: 0.00 to 600.00 in steps of 0.01
Range: Instantaneous, Timed
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
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