Negative Sequence Current - GE F35 Instruction Manual

CHAPTER 5: SETTINGS
SETTING
GROUND IOC1
FUNCTION:
Enabled = 1
SETTING
GROUND IOC1
SOURCE:
IG
SETTING
GROUND IOC1
BLOCK:
Off = 0

5.7.7 Negative sequence current

5.7.7.1 Menu
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEGATIVE SEQUENCE CURRENT
 NEGATIVE SEQUENCE
 CURRENT
The F35 provides two negative-sequence time overcurrent elements and two negative-sequence instantaneous
overcurrent elements. For information on the negative sequence time overcurrent curves, see the Inverse Time
Overcurrent Curves section earlier.
5.7.7.2 Negative sequence time overcurrent (ANSI 51Q, IEC PTOC)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEGATIVE SEQUENCE CURRENT  NEG SEQ TOC1
 NEG SEQ TOC1

F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 5-83: Ground IOC1 logic
SETTING
GROUND IOC1
PICKUP:
AND RUN
IG PICKUP
 NEG SEQ TOC1


 NEG SEQ TOC2


 NEG SEQ IOC1


 NEG SEQ IOC2


NEG SEQ TOC1

FUNCTION: Disabled
NEG SEQ TOC1 SIGNAL

SOURCE: SRC 1
NEG SEQ TOC1

PICKUP: 1.000 pu
NEG SEQ TOC1

CURVE: IEEE Mod Inv
NEG SEQ TOC1

TD MULTIPLIER: 1.00
NEG SEQ TOC1

RESET: Instantaneous
NEG SEQ TOC1 BLOCK:

Off
NEG SEQ TOC1

TARGET: Self-reset
FLEXLOGIC OPERANDS
GROUND IOC1 PKP
GROUND IOIC DPO
SETTINGS GROUND IOC1 OP
GROUND IOC1 PICKUP
DELAY:
GROUND IOC1 RESET
DELAY:
t
PKP
t
RST
See below
See page 5-174
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
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
GROUPED ELEMENTS
827037A5.VSD
5
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