Chapter 2 Installation
Electrical Installation
22
Series PM172 Powermeters
Figure 2-22 3-Wire Open 2½-Element Delta Connection Using 2 PTs, 3 CTs.
Wiring Mode = 3OP3
Figure 2-23 4-Wire 3-Element Delta Direct Connection Using 3 CTs.
Wiring Mode = 4LL3 or 4Ln3