Hypertherm Powermax 125 Service Manual

Powermax125 Service Manual 808070 197
9 – Power Supply Component Replacement
Replacing the power switch
Remove the power switch
1. Complete the following procedures:
a. See Disconnect the power and gas supply on page 166.
b. See Remove the power supply cover on page 172.
c. See Remove the component barrier on page 173.
d. See Remove the end panel bracket on page 174.
e. See Disconnect the gas tube on page 188.
2. Remove the 3 mounting screws from the bottom of the rear panel.
3. Tilt the rear panel approximately 4.0 cm (1.5 inches) away from the
power supply.
4. Verify that power to the system has been turned OFF and disconnected.
Loosen the set screws that secure the 3 power wires (L1-L2-L3) to the
top of the power switch. (See Figure 67 on page 198.)
5. Pull the wires straight up to remove them from the power switch.
6. Loosen the set screws that secure the 2 wires (red, black) to the
auxiliary switch located on top of the power switch behind the L1-L2-L3
wires.
7. Pull the wires straight up to remove them from the auxiliary switch.
8. Loosen the set screws that secure the 3 power wires (T1-T2-T3) to the bottom of the power switch.
9. Pull the wires straight down to remove them from the power switch.
Kit number Description
228880 Kit: Powermax105/125 power switch 400 V CE/380 V CCC/480 V, 600 V CSA
Rear panel mounting screws

Hypertherm Powermax 125 Specifications

General

Output Current	30-125 A
Input Power	15.2 kW
Open Circuit Voltage	300 VDC
Gas Supply	Clean, dry, oil-free air or nitrogen
Input Power Cable Length	10 ft (3 m)
Rated Output Current	125 A
Gas Type	Air or nitrogen
Cutting Capacity	1-1/4 inch (32 mm)
Pierce Capacity	1 inch (25 mm)
Input Voltage	200-600 V, 3-PH
Duty Cycle	100% @ 125 A
Certifications	CSA
Maximum Clean Cut Thickness	1-1/4 inch (32 mm)
Cooling Method	Fan-cooled
Torch Options	Hand