Siemens SENTRON PAC3120 Manual page 50

Connection
4.3 Connection examples
4. 3-phase measurement, 4 conductors, balanced load, with voltage transformer, with
1 current transformer
Connection type 3P4WB
*
**
Figure 4-6
5. 3-phase measurement, 3 conductors, unbalanced load, without voltage transformer, with
3 current transformers
Connection type 3P3W
*
**
Figure 4-7
48
The fuses are only used for cable protection.
All commercially available miniature circuit breakers up to 20 A (C) can be used.
Connection of supply voltage
Connection type 3P4WB, with voltage transformer, with 1 current transformer
The fuses are only used for cable protection.
All commercially available miniature circuit breakers up to 20 A (C) can be used.
Connection of supply voltage
Connection type 3P3W, without voltage transformer, with 3 current transformers
PAC3120 and PAC3220
Equipment Manual, 10/2019, L1V30425208F-01