DOL FOR SINGLE PHASE MOTOR

[rajeev1]

How to select DOL for single phase motor?

As per type-2 coordination for 0.55KW (FLC-4.6)  motor DOL selection is GV2L10+LC1D32M7+LRD08.

Is it correct?

[BenoitLalevee · Accepted solution]

Hello,

Where did you find this products selection?

With single phase motor you have to consider the FLC value, 4.6A in your case

Short circuit and thermal protection must be selected accordingly: 

->GV2LE10 (6.3A) for Short circuit protection

->LRD10 (4-6A) for thermal protection

And as per this level of current, in the 3ph coordination tables (type2), the associated contactor is LC1D09M7

In addition, both GV2L and LRD products must be wired with 2 poles in serial to avoid phase imbalance nuisance tripping (see scheme attached)