Hypertherm Powermax65 Mode D'emploi page 9

Accessing raw arc voltage (Powermax105/125 systems)
To access raw arc voltage, you must install the strain relief (part number 008279) in kit number 228711. You must also
supply and connect an 18 AWG, 2-wire, non-shielded cable similar to OLFLEX ® 190 (601802) in the length needed
to extend between the power supply and the CNC or other equipment plus approximately 60 cm (2 feet) of cable to
connect inside the power supply.
1. On the end of the cable to be connected inside the power supply, strip the outer jacket 7.6 cm (3 inches). Then
strip 1.3 cm (0.5 inches) of wire insulation off of each wire.
2. Crimp an M4 (#8) insulated ring terminal on the end of Wire #1 (negative lead) and an M8 (5/16 inch) insulated
ring terminal on the end of Wire #2 (positive lead).
3. Use a drill with a 19/32 drill bit to drill out the access point on the rear panel. Be careful not to damage internal
components.
4. Remove the screw securing the electrode wire (J28) to the power board.
5. Place the ring terminal of Wire #1 (negative lead) on top of the electrode wire ring terminal.
6. Secure the two wires to the power board using the previously removed screw. Tighten the screw to 23 kg cm
(20 in.-lbs).
Field Service Bulletin
Machine interface for raw arc Voltage
Rear panel
Access point
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