Neutral Current - GE C60 Instruction Manual

CHAPTER 5: SETTINGS
The phase instantaneous overcurrent element can be used as an instantaneous element with no intentional delay or as a
definite time element. The input current is the fundamental phasor magnitude. For timing curves, see the publication
Instantaneous Overcurrent (IOC) Element Response to Saturated Waveforms in UR Series Relays (GET-8400A).
— This setting enables and disables the phase instantaneous overcurrent protection element.
FUNCTION
— Selects the signal source for the phase instantaneous overcurrent protection element.
SOURCE
— Specifies the phase instantaneous overcurrent pickup level in per-unit values.
PICKUP
—Delays the assertion of the
DELAY
and relays.
— Specifies a delay for the reset of the phase instantaneous overcurrent element between the operate output
RESET DELAY
state and the return to logic 0 after the input passes outside the defined pickup range. This setting is used to ensure that
the relay output contacts are closed long enough to ensure reception by downstream equipment.
— Assertion of the operand assigned to this setting block's phase A of the phase instantaneous overcurrent
BLOCK A
element.
— Enables and disables the logging of phase instantaneous overcurrent events in the sequence of events recorder.
EVENTS

5.7.4 Neutral current

5.7.4.1 Menu
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEUTRAL CURRENT
 NEUTRAL CURRENT

C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL
operands. It is used to achieve timing coordination with other elements
PHASE IOC OP
Figure 5-101: Phase instantaneous overcurrent 1 logic
 NEUTRAL TOC 1
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 NEUTRAL TOC 2
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 NEUTRAL TOC 3
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 NEUTRAL TOC 4
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 NEUTRAL TOC 5
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 NEUTRAL TOC 6
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GROUPED ELEMENTS
See below
Note: Seen only if slot F or slot M has an 8H or 8J CT
module installed
Note: Seen only if slot F or slot M has an 8H or 8J CT
module installed
5
5-201