8
2.5 Mounting
The PMC-53A-E should be installed in a dry environment with no dust and kept away from heat,
radiation and electrical noise source.
Installation steps:
Remove the installation clips from the meter
Fit the meter through a 92mmx92mm cutout as shown in Figure 2-11
Re-install the installation clips and push the clips tightly against the panel to secure the meter
Figure 2-11 Panel Cutout Mounting
2.6 Wiring connections
PMC-53A-E 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 (3P4W) Wye Direct Connection with 3CTs or 4CTs
3-Phase 4-Wire (3P4W) Wye with 3PTs and 3CTs or 4CTs
3-Phase 3-Wire (3P3W) Direct Delta Connection With 3CTs
3-Phase 3-Wire (3P3W) Direct Delta Connection with 2CTs
3-Phase 3-Wire (3P3W) Delta with 2PTs and 3CTs
3-Phase 3-Wire (3P3W) Delta with 2PTs and 2CTs
1-Phase 3-Wire (1P3W) Direct Connection with 2CTs
1-Phase 2-Wire, Uln (1P2W-Uln) Direct Connection with 1CT
1-Phase 2-Wire, Ull (1P2W-Ull) Direct Connection with 1CT
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.