For the 11KW explosion-proof motor model B3, what do the three holes on the base mean?
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11KW explosion-proof motor, B3 mounting style, Nanyang motors – what do the three holes on the base mean?
The first and third ones are for fixed motors, while the one in the middle is for grounding
If the hole sizes are the same, it is presumed to be a special design aimed at ensuring compatibility with the installation dimensions of other similar motors.
It is likely a universal design intended to share castings with a 15KW motor; the distance between the holes should be 254 mm, while when they are closer together, it is 210 mm
Some motors require the installation of positioning pins: lol