Hypertherm Powermax65 Mode D'emploi page 11

13. Secure the strain relief on the inside of the power supply by tightening the strain relief nut.
14. Tighten the strain relief retention nut onto the strain relief to secure the cable.
15. Connect the other end of the cable to the equipment according to the manufacturer's instructions. Remember to
observe polarity.
Note 1: 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 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.
Note 2: 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.
Note 3: 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.
Strain relief
retention nut
Cable direction
Field Service Bulletin
Machine interface for raw arc Voltage
Rear panel of
power supply
Strain relief
Strain relief nut
inside power supply
Wire #1 (-)
M8 (
Wire #2 (+)
M4 ( )
#8 ring
)
5/16 in.
ring
9