Motor connection tips for avoiding costly mistakes – EASA article

EASAThe Electrical Apparatus Service Association, (EASA) has prepared their top tips for avoiding costly mistakes when it comes to electric motor connection.

 

 

Manufacturers deploy various external connection schemes to produce three-phase induction motors for multiple voltages and/or starting methods, so successful installation depends on using the relevant connection diagram. If this information is lost, damaged, or ignored, a connection mistake could lead to a costly rewind.

 

 

The following tips apply to common connections on machines with one speed at power frequency. If the manufacturer’s external connection diagram isn’t available, ask a service centre for assistance, especially if there are several missing lead tags, multiple speed ratings at power frequency, unconventional numbering, or NEMA-IEC cross-references.

 

 

 

Publication: Control Engineering
Publication date: August 2016
Author: Mike Howell, EASA Technical Support Specialist

 

If you have any questions or need help connecting your motors get in touch with Mark Convery on mark.convery@houghton-international.com or (0)7713 197130.