Connection
4.3 Connection examples
36 Equipment Manual, 09/2022, L1V30415168B-03
Connection examples
(1) Three-phase measurement, four conductors, unbalanced load, without voltage
transformer, with three current transformers
Connection type 3P4W
* 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 4-2 Connection type 3P4W, without voltage transformer, with three current transformers
(2) Three-phase measurement, four conductors, unbalanced load, with voltage
transformer, with three current transformers
Connection type 3P4W
* 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 4-3 Connection type 3P4W, with voltage transformer, with three current transformers
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