Connection
4.3 Connection examples
38 Equipment Manual, 09/2022, L1V30415168B-03
(5) Three-phase measurement, three conductors, unbalanced load, without voltage
transformer, with three current transformers
Connection type 3P3W
* The fuses are only used for cable protection. All commercially available fuses and automatic
circuit breakers up to 16 A (C) or 20 A (B) can be used.
** Install a short-circuit device. Protection against overvoltage when the secondary transformer
Figure 4-6 Connection type 3P3W, without voltage transformer, with three current transformers
(6) Three-phase measurement, three conductors, unbalanced load, with voltage
transformer, with three current transformers
Connection type 3P3W
*
The fuses are only used for cable protection. All commercially available fuses and automatic
circuit breakers up to 16 A (C) or 20 A (B) can be used.
** Install a short-circuit device. Protection against overvoltage when the secondary transformer
Figure 4-7 Connection type 3P3W, with voltage transformer, with three current transformers