Japanese Standards Association

Low-voltage three-phase squirrel-cage induction motors-Low-voltage top runner motor
 N JIS C 4213

Annotation

This Standard specifies the low-voltage top runner motors (hereafter referred to as motors) among the low-voltage three-phase 50 Hz and/or 60 Hz squirrel-cage induction motors shown below. This Standard covers the motors having the ratings of two or more voltages and/or frequencies.

— Rated voltage 600 V or under

— Rated output 0.75 kW or over up to and including 375 kW

— 2, 4 or 6 poles

— Duty type S1 (continuous running duty) or S3 (intermittent periodic duty) having 80 % or more cyclic duration factor

— Commercial power source driven type

— Motors suitable for conditions of installation site specified in clause 6

This Standard also covers the following motors.

— Motors having flange, foot or shaft of special dimensions

— Motors incorporated in geared motors and brake motors irrespective of the shapes of shafts and/or flanges

This Standard does not cover the following motors.

— Motors that are driven exclusively by inverter.

— Motors which are completely integrated into a machine (for example, pump, fan and compressor) therefore which cannot be tested separately from the machine

NOTE: The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows.