Hypertherm SYNC Powermax 105, Operator'S Manual

Page: 40 / 174

Install and Set Up the Plasma Power Supply
2
40 810470 Operator Manual Powermax65/85/105 SYNC
Connect to electrical power
Use the Hypertherm input current ratings to select conductor sizes for power connection and
installation instructions. The Hypertherm ratings are designated
HYP on the data plate on the rear of
the plasma power supply. Use the higher HYP input current value for installation purposes. Refer to
Find system specifications on the data plate on page 30 for a sample data plate.
Install a line-disconnect switch

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 that it is
easily accessible to the operator.
Installation must be done by a
licensed electrician 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 Voltage configurations on page 41
for recommended fuse sizes.
NOTICE
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.