• We will be performing upgrades on the forums and server over the weekend. The forums may be unavailable multiple times for up to an hour each. Thank you for your patience and understanding as we work to make the forums even better.

autotransformers & EC motors

K

kjunlandr

Member
Location
Jasper, GA
Occupation
Commercial Refrigeration Manufacturer Technical Support
What would cause the failure of a 230V rated EC condenser fan motor on the common side of a 600v x 230v autotransformer on a new start up? I do know if the there is a break in the common side of said AUTRNSFMR 600V would then be applied to the 230V load.
 
W

winnie

Senior Member
Location
Springfield, MA, USA
Occupation
Electric motor research
A 600V:240V autotransformer would have vastly different L-G voltage than a typical 240V source. Filter and TVS components are often connected L-G, and DC bus insulation is based on the L-G voltage.

Jonathan
 
You must log in or register to reply here.
Top