UL 508C UL Standard for Safety Power Conversion Equipment
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UL 508C Document Information:
Title
UL Standard for Safety Power Conversion Equipment
Underwriters Laboratories Inc.
Publication Date:
May 3, 2002
Scope:
These requirements cover open or enclosed equipment that
supplies power to control a motor or motors operating at a
frequency or voltage different than that of the input supply. These
requirements also cover power-supply modules, input/output modules,
Silicon Controlled Rectifier (SCR) or Transistor output modules,
dynamic braking units, and input/output accessory kits for use with
power conversion equipment.
This equipment is for use in ordinary locations in accordance
with Articles 430 and 440 of the National Electrical Code, NFPA
70.
These requirements cover devices rated 1500 volts or less.
Equipment intended for use in hazardous locations as defined by
the National Electrical Code, NFPA 70, shall be evaluated to the
Standard for Industrial Control Equipment for Use in Hazardous
(Classified) Locations, UL 698.
Deleted November 5, 2004
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