why we create vaccume in transformer tank before oil
filteration?
Answer Posted / byd
Generally Hermetic Onan transnformer vaccume before oil
filteration and after oil filling,, because if there is
any air inside of transformer tank and oil then we
apply anergy after there will be short circuit and
insilation resistances will be min, and IEC 60076-1 High
voltage test, if transformer is 33kv, you should apply
mono phase to HV winding as 70kv for 1 minute,, if there
is any short circuit it means oil didnt vaccume ,, or
there is some insilation wrong ,, i am sorry my english
is not good
Is This Answer Correct ? | 2 Yes | 2 No |
Post New Answer View All Answers
which IS or IEC is used for earthing,breakdown voltage of transformer oil, hv/pd testing and all type of electrical testing
i have a 1500kVA transformer what is the kWH meter i need to use?
what is the cause of voltage dipp or swell in the transmission lines?
r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā
What is the difference between diode and a transistor in terms of the direction of current flow?
Explain in details how you would react to an unexpected incident when your supervisor or manager is not around to give instructions?
how can see the ac indoor or out door ac which Tr
When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?
How to calculate earth wire load by formula
what 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
what is 400kv doble circuit quadpole tower?
as a electrical student why should i hire you?
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.
How to setting the volume of RTCC panel AVR (11kv) controller