while buying 30 kva on line ups for 1 phase ouput, we ave to calculate the number of batteries for 2 hours back up? how to calculate the ah rating and number of batteries
1 3268What is Surge Capacitor? Why it is require in Generator Circuit Breaker,inspite of surge arrester?
2635in our all power plant have connected in grid and grid voltage and plant voltage is same, but as per as electrical concept the power will transmit from high potential to low potential but here altough same,then how power transmit from power plant to grid.
1779which one is more costly:single phase induction motor or 3 phase induction motor??give proper reasons..
1 2933Due to ferranti effect which power increases at the receiving end?active power or reactive power?
5 7486i have dry type transformers can you help me that how many tests i can do to know the performence of transformer and also please tell me about the BDV test and Insulation resistance test in oil cooled transformers
4 7566Why 3 over-current and 1 earth fault relay is used on primary side of transformer? Why 2 over-current and 1 earth fault relay in used on secondary side of transformer?
1 7485hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.
2330Post New Electrical Engineering Questions
if negative of DC supply used and positive is grounded through EGB, and if ELCB used in the system then is it sense the positive volatge and get tripped is it possible?
internally connection of photvoltic module
what about electrical pannel.? What is meant by plc pannel.?
What is critical disruptive voltage?
what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct
What is your acheivements
What is the mechanism of WTI
When lag/lead/lag-lead compensation is employed?
What are the advantages of the three-phase motor over single phase motor?
Classify milling machines.
I have finish diploma electronics and five years experience in electrical field in ht service how can i get c licensce or other electrical certificate
why we not used 11kva as a direct our electrnics component.
i have done diploma and btech in EE and live in Chandigarh so kindly help me how can i make my competency certificate in my area.
hi , i have 150 kw loud and we need 50 m cabil,i want to know wich size cabil we use. thanks
what's the requirement of Dy11d0 connection of 3 phase transformer?what's use of it?
