×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

electrical motors cooling methods

electrical motors cooling methods

electrical motors cooling methods

(OP)
Hi;
Could some body providing me with cooling codes (IC) for electrical motors.
Regards.

RE: electrical motors cooling methods

If you go to the NEMA website www.nema.org you can download free copy of condensed NEMA MG-1.  Table 4 gives cooling codes designations.

TABLE 4
TYPICAL METHODS OF COOLING (IC CODE) NEMA IC Circuit Arrangement Primary Coolant Method of Movement Secondary Coolant Method of Movement
WP-I IC 0 A 1
WP-II IC 0 A 1
ODP IC 0 A 1
TEFC (guarded) IC 4 A 1 A 1
TEBC IC 4 A 1 A 6
TENV IC 4 A 1 A 0
TEAO IC 4 A 1 A 7
Complete designation — full description (3 or 5 numerals or letters {numeral letter numeral [letter numeral]}
Simplified designation — 2 or 3 numerals or letters in the final position {numeral numeral numeral or numeral numeral letter}.
Example: The COMPLETE designation of TEFC guarded would be IC4A1A1; the SIMPLIFIED designation would be IC

=====================================
Eng-tips forums: The best place on the web for engineering discussions.

RE: electrical motors cooling methods

whoops - I clipped off the very end of the example:

Example: The COMPLETE designation of TEFC guarded would be IC4A1A1; the SIMPLIFIED designation would be IC 411.

=====================================
Eng-tips forums: The best place on the web for engineering discussions.

RE: electrical motors cooling methods

(OP)
Dear;
I have read this table but unfortunatly there is not a clarification for the letters numbers used.
Regards.

RE: electrical motors cooling methods

Complete description is in MG-1 (2003) Section I - GENERAL STANDARDS APPLYING TO ALL MACHINES - Part 6
ROTATING ELECTRICAL MOTORS—METHODS OF COOLING (IC CODE)

It is 10 pages long so you will have to be more specific if you have a specific questino

=====================================
Eng-tips forums: The best place on the web for engineering discussions.

RE: electrical motors cooling methods

There is also TEBC (totally enclosed blower cooled) which uses a seperately powered blower. A variation on that is pipe (duct) cooled - essentially the blower and the motor are connected by a supply duct and possibly also by a return air duct.

Blower cooling is primarily used in variable speed applications where the stock cooling fan would run too slow. Pipe cooling is used for things like a motor that in inside an otherwise poorly cooled box or where there is a dusty atmosphere in which case the supply duct completely covers the motor.

Most motor manufacturers can give you data on how many cubic feet per minute of air you need for a pipe cooling scheme and sell you blower cooling kits.

Mike Cole, mc5w@earthlink.net

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources