1. INTRODUCTION
Larson Electronics specializes in converting Single Phase electrical power to Three Phase
electrical power. The diagram below provides a very simple view of the layout.
An additional 3-phase breaker panel may be installed on the line between the converter control
panel and the 3-phase equipment. This is recommended to protect each piece of equipment and
the wire that feeds that equipment.
The two single phase lines pass through the phase converter and are used to manufacture the 3
rd
line that completes the three phases. The output voltage will always be close to the input voltage.
If a completely different voltage is needed then a transformer installed in front of the phase
converter will be necessary.
The three-phase output is delta configured. This means that voltage measurements between
phases will be similar to input voltages.
Voltages should only be measured line to line. Do not
measure voltages line to ground
.
Most machinery requires a delta three phase voltage and this
third line voltage to ground should not affect operation. If a piece of equipment requires wye voltage
and a neutral connection, the output of the phase converter must be run through a delta-wye
transformer to create the neutral. The phase converter must be started before the transformer is
connected electrically. This is done with a safety disconnect switch. Larson Electronics can
provide these transformers and disconnect switches.
