Ground Current - GE C60 Instruction Manual

CHAPTER 5: SETTINGS

5.7.5 Ground current

5.7.5.1 Menu
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  GROUND CURRENT
 GROUND CURRENT

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
C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 5-115: Neutral IOC1 logic
 GROUND TOC1


 GROUND TOC2


 GROUND TOC3


 GROUND TOC4


 GROUND TOC5


 GROUND TOC6


 GROUND IOC1



 GROUND IOC8


Ground current elements
Time overcurrent Instantaneous
overcurrent
4 4
6 6
6 6
6 8
GROUPED ELEMENTS
See below
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
See page 5-227
5
5-225