Understading A Short Cct

[magdumshirish]

Respected Sir,
I Want To Understand If A Trasformer
Is Fedding A Motor And 3 Phase Line Line Fault
Occers How The Fault Current Flows.

 

[al hildenbrand]

Your question is too broad, as written. It has many answers.

Imagine the circuit, voltage, type and size of motor, grounding, transformer connections and then draw the circuit diagram of it. Show resistances, inductances, and the capacitance in the diagram. Then draw in the "fault".

Now one can calculate the fault currents at all the points in the circuit diagram.

 

[charlie b]

Respected Sir,

If you are attempting to address Mike Holt, you probably should know that he seldom participates in this forum. I think you should also know that a number of women are active participants, so addressing a question to ?sir? is a bit restrictive.

I Want To Understand . . . How The Fault Current Flows.

For a very short time, as in less than the duration of one cycle (1/60 seconds), current flows from the source (i.e., the transformer) to the fault point AND from the motor to the fault point. The motor, for that brief time, serves as a generator, and feeds current into the fault. But that doesn?t last long, and thereafter (or until a breaker trips to terminate the event) it is only the transformer that feeds current into the fault.

What specifically are you asking for?

 

[magdumshirish]

Understanding Short Circuit

Understanding Short Circuit

Respected Sir/madum

Thanks For Reply. I Am Studing Short Circuit
Calculations . In Case I Am Confused I Will Come Back
To You.
Thanking You