SATEC PM130 PLUS Manual - Manual (Page 28)

‎Chapter 2 Installation Electrical I N S T A L L A T I O N
28 PM130 PLUS Powermeter Series
This configuration provides accurate power measurements only if the voltages are balanced.
Figure ‎2-13 4-Wire Wye 2½-Element Connection Using 2 PTs, 3 CTs (Wiring Mode = 3LL3 or 3Ln3)
Figure ‎2-14 3-Wire 2½-Element Open Delta Connection Using 2 PTs, 3 CTs (Wiring Mode = 3OP3)