Interested to Buy Any Domain ? << Click Here >> for more details...
WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE
THE SAME COMPARED TO ONAF TRANSFORMER OF SAME RATING???
- 5 Answers
- 12952 Views
- I also Faced
- E-Mail Answers
Answer Posted / gunasekaran
as per standard it is not same cooling is depending upon
the rated MVA percentage impedance depending upon the MVA
rating if low MVA %impedance is low if high MVA %Z is high
in standard upto30MVA we can use ONAN
upto60MVA ONAF
above 60MVA we can use OFAF
upto 1.5MVA AN
if customer asking we can use for colling method for any
rating.
| Is This Answer Correct ? | 6 Yes | 3 No |
Post New Answer View All Answers
What are the advantages of vscf wind electrical system?
Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT
what is mean by parallel operation of permanent magnet generators
What is different bewteen low or high impedance busbar protection scheme
Where can i get practical knowledge of solar system?
Pl.brief me about Electrical power distribution system from Main generating station to Industry.What is the use of in between station.
sir& friends i want the collection of recent quetions asked in interview of top most companies please send me on my email san.jsr@hotmail.com
A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?
What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.
whate is the meaning of balance/unbalance,in stabilizers type
How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9
how to select the double earth conductor if 21A full load?
Why we use Electrical energy rather than any other type of energy, mostly? Explain behavior of open secondary CT and short circuited secondary PT in energized condition?
Is it possible to implement Restricted Earth Fault protection for a transformer without neutral CT?
Define filter?
