Hypertherm Powermax45 Bulletin De Maintenance page 7

13. Connect wire 2 to J21. This time, put the connector for the work lead closest to the power board, and put the ring
connector for wire 2 closest to the head of the screw. Torque the screw to 23.0 kg∙cm (20 inch∙pounds).
J19 or J18
(white wire)
14. Replace the rear panel and secure it with the screw. Replace the Mylar barrier in front of the power board.
Replace the cover.
15. Tighten the strain relief retention nut onto the strain relief on the outside of the power supply.
16. Connect the other end of the cable to the equipment according to the manufacturer's instructions. Remember to
observe polarity.
Notice: The output of the internal voltage divider board is designed to prevent shock, energy and fire hazards, and
is intended to satisfy most codes and standards for external wiring outside the electrical enclosure. All external
wiring practices for an unprotected raw arc voltage should be reviewed and approved by the Local
Inspection Authorities (LIA) at the time of installation prior to operation and use.
 Raw arc voltage wiring terminals and connections should not be exposed to accidental contact
under normal and single fault conditions.
 External wiring from an unprotected (that is, no voltage divider used in the power source) raw arc
voltage routed inside conduit between electrical enclosures will normally satisfy all electrical codes
and standards worldwide. Failure to address the hazards associated with live contact,
accessibility and single fault failures to this unprotected output can result in death
or fire.
A voltage divider board inside the CNC protects only the CNC and does NOT protect the external interconnecting
wiring between the power source and the CNC. Overcurrent protection may be required to protect the user and/or
machine in fault conditions.
External wiring outside the electrical enclosure should be suitable for the installation and meet national and local
regulations (for example, NFPA 70 NEC, NFPA 79, Canadian Electrical Code, CSA/CAN E60974-1, IEC 60204-1,
BS 7671) or other codes and/or standards applicable to the installed site where the equipment will be operated.
Powermax45 Field Service Bulletin 806200
All manuals and user guides at all-guides.com
J21 (work lead)
Powermax45 Raw Arc Voltage Kit
TP 19
TP 18
TP 17
W
R B
192 VDC
192 VDC
-
- +
+
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