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if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.
2 7175what is rotor earth fault protection scheme in hydro generator & what is dc field flashing ?
NHPC,
2 9235what is the difference between capacitive voltage transformer & inductive voltage transformer.
3 24327How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.
HAL,
1 4063Generally at what power factor the electronic equipments like computer, TV, EPABX etc.,operates. Please tell me.
HAL,
1 4034what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.
2312Which type of power plant is more easier to produce electrical power at economical condition?
HAL,
5 10361in three phase with neutral connection, what will happen,if the neutral is in open condition with single phase distribution panel
4 9822Post New Electrical Engineering Questions
what is meant by motor startup supervision & motor load jam protection ?
what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.
how to CHECK CT AND PT AT THE FAULT OCCUR IN GENERATOR RELAY PANEL .
What is a copper loss or i2r loss pc?
What are safety device in vcb and acb?
What is nyquist contour?
Why we are using only Dyn11 tranformer in distribution system but not using a Dyn1 in distributing system?why not and advantage and disadvantage in both
how many types control panel of a 132/33 kv substation
Why is ignitor used in sodium vapour lamp
what questions are asked in the interview for the post of an electrical maintenance engineer in FMCG companies?
if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .
WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.
How many types of colling system it trformers?
what is the current density of copper & alluminium.
Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.
