Negative Sequence Current - GE D30 Instruction Manual

GROUPED ELEMENTS
SETTING
GROUND IOC1
FUNCTION:
Enabled = 1
SETTING
GROUND IOC1
SOURCE:
IG
SETTING
GROUND IOC1
BLOCK:
Off = 0

5.7.10 Negative sequence current

5.7.10.1 Menu
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEGATIVE SEQUENCE CURRENT
 NEGATIVE SEQUENCE
 CURRENT
5
The D30 provides two negative-sequence time overcurrent elements, two negative-sequence instantaneous overcurrent
elements, and two negative-sequence directional overcurrent elements. For information on the negative sequence time
overcurrent curves, see the Inverse TOC Curve Characteristics section earlier.
5.7.10.2 Negative sequence time overcurrent (ANSI 51Q, IEC PTOC)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEGATIVE SEQUENCE CURRENT  NEG SEQ TOC1(2)
 NEG SEQ TOC1

5-206
Figure 5-112: 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 DIR OC1


 NEG SEQ DIR OC2


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
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 5-207
See page 5-208
Range: Disabled, Enabled
Range: SRC 1, SRC 2
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
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
827037A5.VSD