What is the formula to calculate the rating of a three phase air circuit breaker

1811

what is the terminal voltage of dc series generator running at rated speed at no load?

6383

What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?

1536

What are the effects of adding a zero to a system?

669

Why mostly the HV side of transformer has Delta?

2747

can indirect loading be called as phantom loading?

1549

placing earthing pit in pathway is correct or wrong??. placing earthing wireGI1/18 inside walls is correct or wrong?. explain!!!

1667

What is the purpose of using busbar mounting fuse?

1594

What is electrical cable termination

2211

What Is Connection APFC Panel In Compony.

925

Readings of ER300P Trivector meter

5838

1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

1755

difference between Ac and Dc mcb ????

1117

what is transient enclosure vltage , very fast transients, very fast transient over voltages

1632

Please, if 1kw is equal to 1.25kva; how then do I know how many kva in 7.5kw?

1025