Motor IP Ratings and Rain hoods
Motor IP Ratings and Rain hoods
(OP)
Hi guys,
We are using IP66 motors on our site and in some instances we have motors mounted vertically outside. Do these motors require rainhodos over the fan? These will be installed where there is a lot of rain per year.
There are conflicting views in the office, some people say yes and some say no. I would like to get some other opinions.
Are rainhoods normally installed on lower rating IP motors? Should the IP rating of the motor not come into he rain hood over of the fan?
Please let me know your thoughts.
Regards
We are using IP66 motors on our site and in some instances we have motors mounted vertically outside. Do these motors require rainhodos over the fan? These will be installed where there is a lot of rain per year.
There are conflicting views in the office, some people say yes and some say no. I would like to get some other opinions.
Are rainhoods normally installed on lower rating IP motors? Should the IP rating of the motor not come into he rain hood over of the fan?
Please let me know your thoughts.
Regards





RE: Motor IP Ratings and Rain hoods
Check the IP Code to see what IP rating are suitable for outdoor installation or simply ask your supplier to avoid any warranty issues.
RE: Motor IP Ratings and Rain hoods
If the motors are running continuously, or if there is a heater built into the motor, you can skip the hood.
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Motor IP Ratings and Rain hoods
RE: Motor IP Ratings and Rain hoods
RE: Motor IP Ratings and Rain hoods
Depending on the endbracket design (internal webbing), typically four are used, 90 degrees apart. Also recommend using sealed bearings (LLB or 2RS) if motor is below 75KW. Space heaters are OK, but if water builds up in end-brackets and floods up towards the winding, eventually
either bearings fail (typically first to fail) or winding grounds out.
macmckim