WHAT IS START TO INDUCTION MOTER IN STAR TO DELTA OF >5HP ?

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Hi Recently I got one formula that is Impedence of Xformer = Rated KVA/Root 3 * secondry voltage OF Xformer. Is it Right??????

2 Answers  

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I have a shop heater with a 1/3 hp capacitor start, induction motor driving the fan. Intermittently, the fan motor speeds up significantly for several seconds (15-60 sec) then slows to normal operating speed. The manufacturer suggested changing the capacitor which made no sense, but I did it to no avail. Could this possibly be caused by the centrifugal switch intermittently reconnecting the start winding?

1 Answers  

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what will happen if the field and armature both are made to rotate in a synchronous machine ?

4 Answers  

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how to calculate the cable size for LT and HT power cables with detail explanation?

2 Answers   Asset Developments, Bhel,

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How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance

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why transmission is only 3 phase and not 2 or 4 or poly phases

0 Answers   Infosys,

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What is differnce b/w tie breaker and bus coupler?

1 Answers  

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Fantio of tranformer

0 Answers   Tenon,

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how calculate gd2 of ht motors

4 Answers   Hindustan Copper Limited, Kohler India,

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what are the basic insulation levels & what its Unit

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Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?

0 Answers  

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