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UL 347A OUTLINE
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UL 347A OUTLINE 4th Edition, May 1, 2014 Outline of Investigation for Medium Voltage Power Conversion Controllers
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Description / Abstract:
These requirements cover medium voltage power conversion
equipment that controls and transfers power to motors. These
requirements also cover power-supply modules, input/output modules,
and electronic solid state switching devices, for use with power
conversion equipment.
These requirements cover equipment rated above 1500 volts to 38kV.
These requirements do not cover equipment for use in hazardous locations as defined by the National Electrical Code, NFPA 70.
These requirements do not cover solid state reduced voltage motor controllers (soft starters).
These requirements do not cover low voltage power conversion equipment rated 1500 volts and below. This type of equipment is covered by the Standard for Power Conversion Equipment, UL 508C.
These requirements cover equipment rated above 1500 volts to 38kV.
These requirements do not cover equipment for use in hazardous locations as defined by the National Electrical Code, NFPA 70.
These requirements do not cover solid state reduced voltage motor controllers (soft starters).
These requirements do not cover low voltage power conversion equipment rated 1500 volts and below. This type of equipment is covered by the Standard for Power Conversion Equipment, UL 508C.