Install and Set Up the Plasma Power Supply
Powermax45 SYNC Operator Manual 811470 31
Requirements for grounding
To make sure of personal safety and correct operation, and to decrease electromagnetic
interference (EMI), the plasma power supply must be correctly grounded.
The plasma power supply must be grounded through the power cord according to
national and local electrical codes.
1-phase service must be of the 3-wire type with a green or green/yellow wire for the
protective earth ground. 1-phase service must comply with national and local requirements.
Do not use a 2-wire service.
3-phase service must be of the 4-wire type with a green or green/yellow wire for protective
earth ground. 3-phase service must comply with national and local requirements.
Refer to the Safety and Compliance Manual (80669C) for more information on grounding.
For mechanized cutting systems, refer to EMI grounding and shielding best practices in the
Powermax45/65/85/105 SYNC Mechanized Cutting Guide (810480).
Rated output (cutting power) of the plasma power supply
Wattage output shows a plasma power supply’s cutting power more than its amperage output. The
rated outputs for the systems are as follows:
To calculate the cutting power in watts (W), multiply the maximum output amperage (A) by the
maximum rated output voltage (VDC). For example:
45 A × 155 VDC = 6,975 W (6.9 kW)
Voltage configurations
The plasma power supply automatically adjusts for correct operation at the current input voltage.
You do not have to change or rewire components. But you must do these tasks:
Install the Hypertherm cartridge in the torch. Refer to Step 4 – Install the cartridge on
page 48.
Make sure that the output current (A) is correct for the cartridge that you installed. If
necessary, turn the adjustment knob on the front panel to adjust the output current. Refer to
Adjust the operating settings manually on page 57.
Maximum output amperage 45 A
Maximum rated output voltage 155 VDC
Cutting power 6.9 kW
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