Siemens SENTRON PAC3200T, Product Manual, Page: 43 / 136

Connection
4.3 Connection examples
Equipment Manual, 09/2022, L1V30415168B-03
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(11) Two-phase measurement, three conductors, unbalanced load, without voltage
transformer, with two 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
circuit is open.
Figure 4-12 Connection type 3P4W, without voltage transformer, with two current transformers
The device indicates 0 (zero) V for L3.
(12) Single-phase measurement, two conductors, without voltage transformer, with one
current transformer
Connection type 1P2W
* 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
circuit is open.
Figure 4-13 Connection type 1P2W, without voltage transformer, with one current transformer