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Chapter 2 Installation
Electrical Installation
Figure 2-20 3-Wire 2-Element Open Delta Connection Using 2 PTs, 2 CTs.
Wiring Mode = 3OP2
Figure 2-21 4-Wire Wye 2½-Element Connection Using 2 PTs, 3 CTs.
Wiring Mode = 3LL3 or 3Ln3
This configuration provides accurate power measurements only if the voltages are balanced.
Series PM172 Powermeters
21
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