Check Voltage at Terminals T1, T2, and T3. With converter and motor connected, and with power on, but no load on motor; voltages should read as follows:
| 230 Volt H-A-S Static | 460 Volt H-A-S Static |
|---|---|
| T1 to T2 – 220 – 240 Volts | T1 to T2 – 440 – 480 Volts |
| T1 to T3 – 300 – 350 Volts | T1 to T3 – 250 – 320 Volts |
| T2 to T3 – 400 – 450 Volts | T2 to T3 – 550 – 650 Volts (Wye Motor) |
| Wye (Star) Motor Only | T2 to T3 – 520 – 600 Volts (Delta Motor) |
Motor must be connected to converter to get the voltage readings above.
DO NOT OVERLOAD
Compute Maximum FLA (Full Load Amperage) for each motor by multiplying the 3 Phase FLA, from the motor nameplate x 1.4 ( i.e. – for a 7.5 HP motor with a 3 phase FLA of 20/10) the converted motor FLA would be 28.2 (230 Volt) and 14.1 (460 Volt).
For more exact converted motor Full Load Amperage, see formula shown on page 4.
For the best possible protection, size dual element fuses, and heater coils from actual amperages by checking loaded motor with an ammeter.
