Connect To Electrical Power - Hypertherm Powermax45 SYNC Operator's Manual

2
Install and Set Up the Plasma Power Supply

Connect to electrical power

Use the Hypertherm input current ratings to determine conductor sizes for power connection and
installation instructions. The Hypertherm ratings are designated HYP on the data plate on the
bottom of the plasma power supply. Use the higher HYP input current value for installation
purposes. See page 21
Protect the circuit with appropriately sized time-delay fuses and a line-disconnect switch.
The maximum output voltage changes related to input voltage and the circuit's amperage. Because the
current draw changes during startup, time-delay fuses are recommended. Time-delay fuses are
resistant to currents up to 10 times the rated value for short periods of time.
Do not use phase converters to supply 3-phase power to your Powermax plasma power supply.
Hypertherm does not warranty systems that have been damaged as a result of poor power quality from
phase converters or incoming line power.
Use a line-disconnect switch for

each plasma power supply so
that the operator can stop the
incoming power quickly in an
emergency.
Put the switch in a location where

the operator can get access
easily. A licensed electrician must
install the power switch
according to national and local
codes.
The interrupt level of the switch

must equal or be more than the
continuous rating of the fuses.
The switch must also do the following:

Isolate the electrical equipment and disconnect all live conductors from the incoming

supply voltage when in the OFF position.
Have one OFF and one ON position that are clearly marked with O (OFF) and I (ON).

Have an external operating handle that can be locked in the OFF position.

Contain a power-operated mechanism that operates as an emergency stop.

Have approved time-delay fuses installed. Refer to

for recommended fuse sizes.
30
for a sample data plate.
Voltage configurations
811470 Operator Manual
on page 31
Powermax45 SYNC