I need a 33/690V Dry type transformer.How to select IP class for this transformer.This will be an outdoor transformer located in a highly polluted environment.
3 4424How Id and Ires are calculated in siprotech 7ut612 and abb trsfmr differential relay.what is the formula
1 2861what happen if any one phase of a slipring induction rotor winding is open?is it start or won't?
2 5442some ac motor's direction get change dueto ghanging input to the ac drives.(say ryb to rby). but some motor direction remains the same when phase sequence is changed fromdive side. can anybody guide me?
1 4162There is one 40MVA oil cooled transformer (yet to commission), filled with 95% oil and we are trying to fill 5% Nytrogen in that transformer so that there should not be any foreign component inside. But even though there is no leakage, nytrogen is not withstanding inside transformer, within a day or two pressure guage is showing 0. Why is it soooo? Pls reply.
1 2961In our domestic single phase line if you don't have a ground connection (earthing)how will you separately use earth in a specific power supply board.
1 2804Post New Electrical Engineering Questions
HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS
How is the connection of the tap changer on the HV side been made?
Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.
What is the method to solve circuit using source transformation?
What is mean by Sensitive Earth fault & what are the effects
what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?
Wt is the function of reactive power? How it generates & consume though resultant is zero?
we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan
In AC if the direction of current keeps reversing every half cycle, how does it propogate through the transmission lines?
Determine a suitable number of slors and conductors per slot for the starter 1 winding of a 3 phase, 3300 V. SO Hz 300 rpm alternator. The diameter is 2.3 m
what happens when series resonance occurs?
sir vizag steel ka junior trainee ka paper kitne number ka ayega
Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .
WHY BREAKER ARE USED IN SUBSTATIONS?
from generating station If 400v LT line length is 1000m how much voltage is drop and how do i calculate it? which cable will be use for this line?
