GE C60 Instruction Manual page 370

GROUPED ELEMENTS
The C60 contains protection elements for neutral time overcurrent (ANSI device 51N) and neutral instantaneous
overcurrent (ANSI device 50N). A maximum of six neutral time overcurrent elements and eight neutral instantaneous
overcurrent elements are available, dependent on the CT/VT modules ordered with the relay. See the following table for
details.
5
CT/VT modules
Slot F
8F/8G
8H/8J
5.7.4.2 Neutral time overcurrent (ANSI 51N, IEC PTOC)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEUTRAL CURRENT  NEUTRAL TOC1(4)
 NEUTRAL TOC1

5-202
 NEUTRAL IOC 1


 NEUTRAL IOC 2


 NEUTRAL IOC 3


 NEUTRAL IOC 4


 NEUTRAL IOC 5


 NEUTRAL IOC 6


 NEUTRAL IOC 7


 NEUTRAL IOC 8


Neutral current elements
Slot M Time overcurrent
8F/8G 4
8H/8J 6
8F/8G 6
8H/8J 6
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
See page 5-203
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
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
Instantaneous
overcurrent
4
6
6
8
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: Phasor, RMS
Range: 0.020 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
C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS