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Connection
4.3 Connection examples
PAC1020
Equipment Manual, 05/2020, L1V30610008B-01
31
Example connections
1.
3
-
phase measurement, 4 conductors, unbalanced load, without voltage transformer,
with 3 current transformers
Connection type 3P4W
*
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
*** Install a short-circuit device. Protection against overvoltage when the secondary transformer
circuit is open.
Figure 4-2
Connection type 3P4W, without voltage transformer, with 3 current transformers
2.
3-phase measurement, 4 conductors, unbalanced load, with voltage transformer, with
3 current transformers
Connection type 3P4W
*
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
*** Install a short-circuit device. Protection against overvoltage when the secondary transformer
circuit is open.
Figure 4-3
Connection type 3P4W, with voltage transformer, with three current transformers
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