GE c60 Instruction Manual page 317

CHAPTER 5: SETTINGS
The C60 contains protection elements for ground time overcurrent (ANSI device 51G) and ground instantaneous
overcurrent (ANSI device 50G). A maximum of six ground time overcurrent and eight ground instantaneous overcurrent
elements are available, dependent on the CT/VT modules ordered with the relay. The following table has details.
CT/VT modules
Slot F Slot M
8F/8G 8F/8G
8H/8J
8H/8J 8F/8G
8H/8J
5.7.5.2 Ground time overcurrent (ANSI 51G, IEC PTOC)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  GROUND CURRENT  GROUND TOC1(6)
 GROUND TOC1

C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL
 GROUND TOC6


 GROUND IOC1


 GROUND IOC2


 GROUND IOC3


 GROUND IOC4


 GROUND IOC5


 GROUND IOC6


 GROUND IOC7


 GROUND IOC8


Ground current elements
Time overcurrent Instantaneous
overcurrent
4 4
6 6
6 6
6 8
GROUND TOC1

FUNCTION: Disabled
GROUND TOC1 SIGNAL

SOURCE: SRC 1
GROUND TOC1

INPUT: Phasor
GROUND TOC1

PICKUP: 1.000 pu
GROUND TOC1

CURVE: IEEE Mod Inv
GROUND TOC1

TD MULTIPLIER: 1.00
GROUND TOC1

RESET: Instantaneous
GROUND TOC1 BLOCK:

Off
GROUPED ELEMENTS
Note: Seen only if slot F or slot M has an 8H or 8J CT
module installed
See page 5-192
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
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: Phasor, RMS
Range: 0.000 to 30.000 pu in steps of 0.001
Range: see the Overcurrent Curve Types table
Range: 0.00 to 600.00 in steps of 0.01
Range: Instantaneous, Timed
Range: FlexLogic operand
5
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