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we all know that in transformer, voltage and current are inversely related i.e. Vp/Vs= Is/Ip....so in standard CT..we have a ratio of 200/5...that means our voltage should increase by ratio of 40..althoug that is not the case...because that requires high insulation level.and pratically not feasible......can anybody clarify my ques.......thanx
2 4265what is the Excaste meaning of CT Saturation?? 10 P 20, 15 VA, what is the meaning of 10, & 20. if the CT polarrity changed what will happened?? what is the differece between measuring CT & Protection CT?? what is the Saturation Point of measuring CT & Protection CT??
1 11394Is it possible to import & export power through the same power transformer? what will be the vector group normally for both different or same?
1 4037I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?
1 3287we have 400kv/6.6kv transformer ,it has total 9 taps on HV side with normal tap on tap no 5.when we took the ratio test we observed that ratio was decreasing from tap 1 to tap 5 and was found increasing from tap 5 to tap 9.What is the reason?if anyone have related document then please send me on the email id ankushbahale@gmail.com......plz plz
1 3943whycircuit breaker is not connected at the generator end where the capacity of the generator is more say 60MW, 100MW etc.
2 6605Post New Electrical Engineering Questions
how to remover corona effect and hysteresis losses from contactor
How to check the LM324 Ic
why do we not use equivalent voltage source in negative sequence equivalent ckt.
Convert a star connected network into a delta connected network.
How does a transformer contribute towards the widespread popularity of ac system over dc?
Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?
How harmonic block test are conducted on relays ( Siemens,Areva ect )power transformer using omicron kit?
will there be any problem by recovering slip from single phase induction motors?
When will you multiply and devide with derating factors to the actual value while sizing the cable?
What is ferro-resonance in electrical system? Why it occurs and what are measures to prevent it?
What are the disadvantages of autotransformer?
WHAT IS THE USE OF PIG TAIL IN WINDOW CT ?
What are the special cables required for explosion proof wiring?
What is voltage ratio of a transformer?
For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation
