Siemens SG8158-00 manual 52 = Power Circuit Breaker = Isgs Internal CT

Hardware Configuration

4

1
2
3
	ISGS
	1
3	4
	2
5	6
	3
7	8
	N
10	9
52

Three Phase Current with Residual Ground Sensing

1
2
3
	ISGS
	1
3	4
	2
5	6
	3
7	8
52
	N
10	9

Three Phase Current with Zero Sequence CT

1
2
3	ISGS
N
	1
3	4
	2
5	6
	3
7	8
	N
10	9
52
Three Phase Current with Direct Neutral Sensing
1
2
3	ISGS
G
	1
3	4
	2
5	6
	3
7	8
	N
10	9
52

Three Phase Current with Direct Ground Sensing

52 = Power Circuit Breaker

= ISGS Internal CT

Figure 4.8 Current Transformer Configuration

20 Siemens Energy & Automation, Inc.