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we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.
CFCL,
3 7327CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?
L&T,
22 29365WHY THE FREQUENCY IS 50 HZ IN INDIA.CAN WE USE SOME OTHER FREQUENCY.IF SO WHAT IS THE RANGE AND WHAT WILL BE THE EFFECT IN PRESENT POWER SYSTEM IF WE CHANGE THE FREQUENCY AS YOU SUGGEST ?
32 58693Why Transformer in KVA?
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41 90935Post New Electrical Engineering Questions
How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?
what is the ms flat constant for calculating earth mat design calculation?
how does this job compare with others you have aplied for?
explain with diagram how to protect transformers and substations from over current with help of CT's?
how to interlock 3 incomer-ACB,1 buscoupler ACB,... pls answer this question and if possible send me the ckt diagram..haifriends2910@gmail.com
what are carbondioxide and dcp used in fire extinguishers
Briefly describe means used by electricity suppliers to influence the flow of active and reactive power in power networks (one for each type)?
the winding of Generator and Motor is star or in delta ? and why
hi Is there any possibilities to find out the rotation of a shaft or something else by using electromagnectic waves or by IR rays.If s then can v change the dir., of rotation of the same by remotely?& how? plz dn't any1 say "NO r CAN'T"
what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?
How to justify this statement ??? "Capacitors in series provide less capacitance but higher voltage breakdown rating for the combination"
IF % IMPEDANCE OF A TRANSFORMER IS INCREASED FROM 5.8% TO 8% HOW MUCH THE EFFICIENCY OF THE TRANSFORMER WILL COME DOWN?
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.
What is clock position of Transformer?what are the clock positions are there?and what is different of them?
what is the eight bit unit?
