What should be the dielectric strenght value of transformer
oil of 11/0.433KV distribution transformer and 33/11KV
tranmission transformer ?
Answer Posted / k.prakashchandra
40 KV (min) for below 72.5 KV class
Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?
What is the difference between diode and a transistor in terms of the direction of current flow?
on a three-winding transformer relationship delta-delta-star, on third winding why the relationship is a star? what are the advantages and disadvantages? Thank you and please help
What is stacking factor? What is its approximate value?
what's the exact magnitude of current, flows through Neutral?
Why is a plain induction motor unsuitable for wide speed control?
Write the force balance equation of ideal dashpot element.
what is interfacing in computer studies?
In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?
how to revers the direction of single phase motor
How to work E.L.C.B and how to connect in circuit.
defination of lines
Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?
i have install 750 kva distribution transformer at my site and want to do neutral earthing. what calculations should i follow to determine earthing conductor material and size?