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What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?
2280Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?
2195TO operate transformers in parallel, vector symbol of the both should be same.If one transformer name plate is not there, how can we conclude that whether the transformer is having the same vector symbol or not?
4 7827what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R
NCC,
2286Dear Sir, we met a disaster with our 62.5 kva genset, after rewinding we informed by our contract engg that due to return current coming in neutral & impropper earthing this happend. But after all set up & load balance we checked & found again we have about 20 to 32 amp return current on neutral. we have 12 airconditioner + 12 mini fridge on single phase line. Pl suggest any idea to solved this problem
3 5171Post New Electrical Engineering Questions
why the difference arise between HT reading & LT reading (submeters fixed in complexes, apartments etc)if the power factos exceed from 0.9 to 1 can the ht meter reads fast?
Can we put 3 layers of cable tray while installing tray
how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?
what is the question paper model for section engineer in RRB
What is a Phase shift meter? Where can I get one?
what kn of disc is used in 33kv,132kv,220kv,400kv,800kv transmission line
what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?
To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?
what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end
Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method
How much of the total hydro power potential has been exploited so far in india?
how does a submersible pump work..?
What is instrumental error?
For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is
what is harmonics? what are the factors it will depend upon
