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In power plants the reading changes abruptly to give value (MW -25) (MVAR -15) What are the reasons for this? What is the solution?
GE,
2 4688What is the maximum allowed kwa through 2.5mm cable. Electric company installed 2 electric meter at my premises . Two jumper wires of 2.5 mm are used to connect . 2 single phase meters with allowable load 6 and 3 kwa. These jumper wires are taken from a 3 phase electric meter. Meters are in open Sun. What max load these wires can take.
KESC,
2131I am new guy as an electrical engr. in a 100MW HFO based power project. I am in operations division. I have noticed from last few days, my supervisor sends the last 24 hours energy generation calculation to my plant manager. I have noticed, he calculated last 24 hour's generated energy differences in KWH then he multiplied it with a multiplying factor 960. for example: total difference =2.685 KWH*960= 2577.6 MWH. but he does not not know what is multiplying factor 960?? can anybody explain it??
1 3616what will happen if secondary of potential transformer (220kv/110volt) of any metering core or protection core (cables) of any phase got earthed??
1 4459what is the pulse and audio frequency transformer? what is different between induction regulators and tap changing transformer?
2071A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.
3003Dear Friends, Need your help for connecting APFC panel, Quotation : I have 2 No’s 1000 KVA Transformers, both transformers are having separate APFC panels, ( Tr-1,400KVAR, TR-2,450 KVAR) Now I want to stop One transformer, present load is 650Amps, Max, So One transformer is enough, I have switched OFF TR-1, but PF is not maintaining properly, its 0.5, So now I want to connect TR-2 APFC also in TR-1 Loads, Can any one answer for my Quotation with drawing, how to connect TR-2 APFC panel in TR-1 Loads,
L&T,
4 6474Hi to u all : Friends: Why when operate on 2 phase welding machine the power metr goes reverse ?? the meter is god on other loads. thanks
2 4480what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?
2240Post New Electrical Engineering Questions
Why is the air gap between the pole pieces and the armature kept very small?
how much allowable resistance that can be difference in motor all coils?
what is the use of current transformer in power transformer secondary side.?its connectyed in WTI
The synchronous machine excitation system explain
When we giving the 3 phase supply to ups system how to coming netural?
Draw a SLD of DG distribution up to main LT panel?
I have a 380 KVA DG set. How can i find out 1. My Fuel Consumption per hr ? 2. Electricity produced in 1 Hr. ? 3. If load varies then how does it affect fuel consumption & electricity produced ? Please HELP !!! Really need an answer.
what is transformor oil gread
Is it advantages of having star-delta vfd than normal star vfd , if yes why?
WHY BREAKER ARE USED IN SUBSTATIONS?
Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
i want some interview related questions with their answers which can help for attend the interviews...
how to find number of run cable laying[LT side] for transformer & alternator secondary side? [above condition for getting output power transformer to main panel side] give the example.
3 phase induction motor connection star or delta while using ac drive motor is .75 to 5.5 kw
