×
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

Recommended Motor Contactor Maintenance & Inspection

Recommended Motor Contactor Maintenance & Inspection

Recommended Motor Contactor Maintenance & Inspection

(OP)
Does anyone have a reference for the recommended interval of maintenance and inspection of motor contactors?  This would be a recommended practice or interval for inspecting the contacts for pitting and wear, etc.

thanks

jack

RE: Recommended Motor Contactor Maintenance & Inspection

This will be highly dependent on frequency of motor starting.  Contactors are rated based on number of starts and stops.  

Also, it will be different for NEMA versus IEC contactors.  

I'm sure manufacturers have specific recommendations.  

FWIW , NETA recommendations for both low voltage and medium-voltage contactors:  

Visual inspection - every two months
Visual & Mechanical - every 12 months
Visual, Mech, & Electrical - every 24 months.  

NETA (www.netaworld.org) has detailed specifications for maintenance testing that you could use as at least a starting point.   

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