GE F35 User Manual

CHAPTER 5: SETTINGS GROUPED ELEMENTS
F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 5-247
5
Figure 5-131: Ground IOC1 logic
5.7.7 Negative sequence current
5.7.7.1 Menu
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEGATIVE SEQUENCE CURRENT
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
These elements measure the current that is connected to the ground channel of a CT/VT module. The conversion
range of a standard channel is from 0.02 to 46 times the CT rating.
This channel can be equipped with a standard or sensitive input. The conversion range of a sensitive channel is
from 0.002 to 4.6 times the CT rating.
 NEGATIVE SEQUENCE
 CURRENT

 NEG SEQ TOC1

See below

 NEG SEQ TOC2


 NEG SEQ IOC1

See page 5-248

 NEG SEQ IOC2

 NEG SEQ TOC1


NEG SEQ TOC1
FUNCTION: Disabled
Range: Disabled, Enabled

NEG SEQ TOC1 SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6

NEG SEQ TOC1
PICKUP: 1.000 pu
Range: 0.020 to 30.000 pu in steps of 0.001

NEG SEQ TOC1
CURVE: IEEE Mod Inv
Range: see Overcurrent Curve Types table

NEG SEQ TOC1
TD MULTIPLIER: 1.00
Range: 0.00 to 600.00 in steps of 0.01

GE F35 Specifications

General

Frequency	50/60 Hz
Device Function	Protection Relay
Communication Protocols	DNP3
Type	Digital Protection Relay
Current Rating	5 A
Protection Functions	Overcurrent