POWER SUPPLY SETUP
2-4 powermax
45
Operator Manual
Install a line-disconnect switch
Use a line-disconnect switch for each power supply so that the operator can turn off the incoming
power quickly in an emergency. Locate the switch so that it is easily accessible to the operator.
Installation must be performed by a licensed electrician according to national and local codes. The
interrupt level of the switch must equal or exceed the continuous rating of the fuses. In addition, the
switch should:
• Isolate the electrical equipment and disconnect all live conductors from the incoming supply
voltage when in the OFF position.
• Have one OFF and one ON position that are clearly marked with O (OFF) and I (ON).
• Have an external operating handle that can be locked in the OFF position.
• Contain a power-operated mechanism that serves as an emergency stop.
• Have slow-blow fuses installed as recommended in the table on the previous page.
Requirements for grounding
To ensure personal safety, proper operation, and to reduce electromagnetic interference (EMI), the
Powermax45 must be properly grounded:
• The power supply must be grounded through the power cord according to national and local
electrical codes.
• Single-phase service must be of the 3-wire type with a green or green/yellow wire for the
protective earth ground and must comply with national and local requirements. Do not use
a 2-wire service.
• Three-phase service (CE only) must be of the 4-wire type with a green or green/yellow wire
for the protective earth ground and must comply with national and local requirements.
• Refer to Grounding safety in the Safety and Compliance Manual for more information.
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