Answer / ronak garg

In welding we need high current and low voltage. So basically a welding transformer is a step down transformer. A normal transformer can be a step down or a step up depending on our purpose.

Answer / kashyap vasani

welding transformer has higher frequency than normal transformer

In case of HV test on medium voltage cables, BS is asking for 4 U0 where as IEC is asking for 3.5 U0. Can any one advise me how this 3.5 times or 4 times U0 is derived?

0 Answers  

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how manyunits consumed by 25 kvar capacitor bank

2 Answers   MRF, Suzuki,

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can we run a motor rated 50Hz,415vac,1440RPM At higher speed then rated on name plate with the help of VFD /drive on long term basis.wheater it will effect the motor life

3 Answers  

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what will happen if a part of primary winding of a transformer is accidentally short-circuited?

2 Answers  

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From what on-site components does the HT panel monitoring the bus-bars in a 11kV system take inputs?

0 Answers  

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when running 2 nos 450kva dg sets in parallel operation ,in one Dg set power factor and Kvar going to lagging and ampere suddenly going high,please give me suggestion to correct the same.

2 Answers  

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Using 11000V/433V,3 ph,50Hz,500 KVA, what is the maximum capacity of motor in KW that can be connected and started at a single moment? Also explain about any calculations and formulas used in deriving the same.

4 Answers  

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Difference between induction motor and synchronous motor? i Think Synchronous motors operate at synchronous speed (RPM=120f/p) while induction motors operate at less than synchronous speed (RPM=120f/p – slip). Slip is nearly zero at zero load torque and increases as load torque increases am a right pls guide & send Other Comments

5 Answers   Jindal,

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Full form of bdv test?

2 Answers   Hi Tech Transpower,

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how to calculate lighting for a room

2 Answers   Coca Cola,

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give some advantages and disadvantages of combiniing the session, presentation, and application layer in the osi model into one single application layer in the internet model

0 Answers  

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I have two AC generators, the first rated 2680KVA for 380V/4345A/pf:0.7 and the second rated 3461KVA for 5500V/363A/pf:0.8. I want to parallel the two generator to a bus. The second generator passes through a transformer to down the voltage to 380V and a part of its power goes to another bus so that it's only a part of the total power of the second generator taht goes to the considered bus. I have two Basler DECS100 AVR regulator. How can I make the synchronization ? What others equipments must have ?

1 Answers   CST,

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