problem to control Ac motor using a relay

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walid
Posts: 1
Joined: Thu May 30, 2019 4:44 pm

problem to control Ac motor using a relay

Post by walid » Thu May 30, 2019 6:24 pm

good morning,
i have an Ac motor 230v/50hz/0.7A.
i tried to control it using a relay as shown in the attached image.
i meet two problems
1- the varistor is grilled after 4 trial on /off .
2- the contact of the relay is damaged also after 50 trial on /off. here i used the same schema as shown in the attached image but without the varistor.
characteristics of the contact of the relay :10A-230VAC.
i used the Excel file named HIQUEL_snubberCalculator_AppNote_En_100
to compute the snubber components values.
could you please tell me where is the problem in my schema.
thank you an advance.
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om_tech_support_KR
Posts: 53
Joined: Thu Jan 11, 2018 3:03 pm

Re: problem to control Ac motor using a relay

Post by om_tech_support_KR » Fri May 31, 2019 11:26 am

Hi Walid,

In regards to your post, we are product experts on the components that we manufacture and unfortunately, we do not have experience with this type of circuits. Therefore, we are unable to provide further insight than what you have determined. For something like this, I would recommend that you contact a professional electrician.

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