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Ceiec Electric Technology
2.4 Wiring Connections
PMC-630E can satisfy almost any three phase power systems. Please read this section carefully
before installation and choose the correct wiring method for your power system. The following
wiring modes are supported:
3-phase 4-wire Wye Direct Connection
3-phase 4-wire Wye with 3PTs and 4CTs
3-phase 3-wire Grounded Wye Direct Connection
3-phase 3-wire Grounded Wye with 3PTs and 3CTs
3-phase 3-wire Open Delta Direct Connection
3-phase 3-wire Open Delta with 3PTs and 3CTs
3-phase 3-wire Open Delta with 3PTs and 2CTs
2.4.1 3-phase 4-wire Wye Direct Connection
Please consult the serial number label to ensure that the system phase voltage is less than or equal to
the meter’s voltage input specification.
Set the Wiring Mode to Wye.
Figure 2-4 4-Wire Wye, Direct Connection
Caution
Under no circumstances should the PT secondary be shorted.
Under no circumstances should the CT secondary be open when the CT primary is
energized. CT shorting blocks should be installed to allow for easy maintenance.
