If we have 630kva step down transformer to operation 3 phase motor 150 kva which size of cable is used? at circuit breaker to 3 phase motor or to electrical board

1 Answers  

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What is power transformer?

3 Answers   Welspun,

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Sir We have a REF relay connected to 10MVA(Y-Y) Transformer.on External earth fault REF relay trips along with earth fault relay.The REF relay has no complant as we tested relay.Why is it happening?

3 Answers   KSEB,

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why PT transformer primary r the grounded?

2 Answers   L&T,

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how to find total current when kva is 30.4 given ? should we use root 3 (1.732) in the formula?

2 Answers  

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What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?

0 Answers   HPCL,

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A 400KVA Transformer has 400Hz frequency.if frequency is changed to 50Hz,then what will be the new KVA rating?

2 Answers   ABC,

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Isolation transformer primary to sec turns ratio?

2 Answers  

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What is VCB? Where it is installed?

11 Answers   Hyundai,

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What is the knee point of voltage of CT?

5 Answers   NTPC,

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aeroline vibration is present

1 Answers   DVC,

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what is the powerfactor

5 Answers   GVK,

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