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How to determine with DMM which one is the start winding & which one is run winding

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munzir

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How to determine with DMM which one is the start winding & which one is run winding

How to determine with DMM which one is the start winding & which one is run winding in a single phase AC motor ?

Where to connect the capacitor ?
 

Re: How to determine with DMM which one is the start winding & which one is run windi

The start winding has a high resistance compared to the run winding
Its best to measure the ohms with a analog multimeter
The capacitor will be connected in series with the start winding
 

Re: How to determine with DMM which one is the start winding & which one is run windi

What is centrifugal switch ? why its used here ?
Where to connect / apply phase & where to neutral ?
 

Re: How to determine with DMM which one is the start winding & which one is run windi

a centrifugal switch is operated by rotational force.
it will be in closed position at start of rotation and until a set speed is reached.
beyond which , it will open.
the centrifugal switch is connected to aux wndg circuit.
So that , aux wndg will be connected at satart. when motor is reaching the full speed it will be cut from supply by centrifugal switch.
you can refer the diagram , attached in the earlier message.
 

Re: How to determine with DMM which one is the start winding & which one is run windi

if we don't use the centrifugal switch then what might happen ?
where must be the neutral & phase connected ?
 

Re: How to determine with DMM which one is the start winding & which one is run windi

if we don't use the centrifugal switch then what might happen ?
then it will be classified as 'capacitor run' motor type.
 

Re: How to determine with DMM which one is the start winding & which one is run windi

& with centrifugal switch what type of motor it would be ?
 

Re: How to determine with DMM which one is the start winding & which one is run windi

& with centrifugal switch what type of motor it would be ?
capacitor -start motor type.
 

Re: How to determine with DMM which one is the start winding & which one is run windi

difference between capacitor start motor & capacitor run motor ?

which one is used in fans ?
 

Re: How to determine with DMM which one is the start winding & which one is run windi

capacitor run.
 

Re: How to determine with DMM which one is the start winding & which one is run windi

what's the difference between these two ?

can we interchange capacitor run motor with capacitor start motor ?
 

Re: How to determine with DMM which one is the start winding & which one is run windi

if those two satisfies the starting torque , then yes.
 

Re: How to determine with DMM which one is the start winding & which one is run windi

how can we compare or can check whether they're satisfying the starting torque ?
 

Re: How to determine with DMM which one is the start winding & which one is run windi

first the HPs and rpms should satisfy. from the specification of the two motors , starting torque is to be satisfied.
 

Re: How to determine with DMM which one is the start winding & which one is run windi

how to satisfy the starting torque ?
 

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