what is the procedure to carry out BDV test of a
transformer ?
Answer Posted / c.b.sharma
1.first we will take filltered oil in test kit.
2. then maintained 2.5mm gap between electrode and applying
rated 40 & 60 Kv for 1 minite .
3. the above test withstood for 1 minite its ok for
energiseing the transformer.
Is This Answer Correct ? | 11 Yes | 4 No |
Post New Answer View All Answers
why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor
how can maintain the power factor and why and this is how do work tell us
Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?
why fractional pitch winding generally used in alternators?
The principle of switching circuits for different types of batteries in application of storage systems
In MEP Services what are parts of STP and what are there function?
why h parameter are called as hybrid parameter?
Why does the radius of armature is less than the radius of pole shoe?
Describe the control mechanism of missile launcher???
What is hipot test procedure?
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
What size cable (based on voltage drop) is required to supply a 40 A three phase boiler if the wiring system is 75V single insulated cables installed in non-metallic rigid conduit 56m from the main switchboard? Voltage drop in the consumer's mains is 8V.
Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet
IN 1000kva transformer where the oil and winding temperature sensors is connected
Draw the line diagram of diffretial relay connected to transformer?