Hypertherm Powermax 125 Service Manual

118 Powermax125 Service Manual 808070
8 – Troubleshooting and System Tests
Hypertherm IGBT tester
Use the Hypertherm IGBT tester (128883) as described in the following sections, or assemble your own IGBT tester
from the schematic diagram shown in Figure 10 on page 123 and use it to test the IGBTs.
Figure 7
128884
1
2
3
4
5
6
7
8
9
10
1 Test for shorted IGBT
2 Fail LED (red)
3 Pass LED (green)
4 Circuit diagram
5 Low battery LED (red)
6 Test for open IGBT
7 Rocker switch
8 Collector (red)
9 Gate (yellow)
10 Emitter (black)

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