Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 14 replies
  • Subscribers 32 subscribers
  • Views 2030 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Freezer-Extension Lead Exclusion-Guarantee.

Zoomup
A customer of mine has said that the guarantee for his tall freezer is invalidated if the appliance is supplied through an extension lead.


Why is that?


How can an extension lead cause freezer damage? The appliance was running well supplied by an extension lead when I saw it.


Z
Parents
  • 0
    This is very real ... and can affect other single-phase induction motor appliances like tumble dryers as well.


    Basically, if there's too much impedance in the supply, the voltage on the capacitor in series with the start winding (capacitor-run motor type) becomes too large, and the motor also overheats due to increased "slip". This eventually damages the capacitor and/or the motor.


    Can also occur with detached garage extended from ring-main in T&E from a plug or spur in a ring in the house (fuses also increase supply resistance). Also seen this in cases where there have been problems with crimping or braising of contacts in moulded plugs on the appliance themselves.
Reply
  • 0
    This is very real ... and can affect other single-phase induction motor appliances like tumble dryers as well.


    Basically, if there's too much impedance in the supply, the voltage on the capacitor in series with the start winding (capacitor-run motor type) becomes too large, and the motor also overheats due to increased "slip". This eventually damages the capacitor and/or the motor.


    Can also occur with detached garage extended from ring-main in T&E from a plug or spur in a ring in the house (fuses also increase supply resistance). Also seen this in cases where there have been problems with crimping or braising of contacts in moulded plugs on the appliance themselves.
Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines