2–12 PQM POWER QUALITY METER – INSTRUCTION MANUAL
ELECTRICAL CHAPTER 2: INSTALLATION
Three-wire systems with voltages 600 V (L-L) or less can be directly connected to the PQM 
without VTs. Select the 
S2 SYSTEM SETUP \ CURRENT/VOLTAGE CONFIGURATION \ VT 
WIRING: 
3 WIRE DIRECT setpoint.
The PQM voltage inputs should be directly connected using HRC fuses rated at 2 amps to 
ensure adequate interrupting capacity.
FIGURE 2–8: Wiring Diagram 3-wire Direct (No Vts)
Courtesy of NationalSwitchgear.com