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For polarity test on a 11/3.3kV 2.5MVA delta-star Unit Auxiliary transformer,415V 3-phase supply was applied at the HV. Connection between Aa was made with a 2.5mm cable. As soon as power was switched on the cable caught fire and burnt. This test was then abandoned. It is noteworthy to say that a similar cable was also used in a similar transformer for the same. The cable did not burn and test was successfully completed with good result. What is wrong? Please, help me out.
3 7552In the Variable Voltage Variable Frequency Drive, how the Voltage and Frequency varied ? Is it varied in the Inverter part of the Drive ? Please give us supporting document if any.
1917in our sub station why we step down firstly 33kv\11kv then 11kv to 430v. can we direct step down 33v to 430.v.
18 42382When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?
2041Post New Electrical Engineering Questions
what kelvin's law ?
what is the diff. between x'mer , isolation x'mer & ultra-isolation x'mer ?????????????
In siemens PLC, why do we want to move the data ?
What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.
State any two nuclear power stations in India, with their generating capacity.
DRAW ACIRCUIT DIAGRAM OF 100 KVA 415V/55-0-55V DELTA TO STAR TRANSFORMER
What is the method to solve circuit using source transformation?
H.t motor 6600 volt to same motor lt supply 440volt supply applyed to h.t motor to effect....
pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..
how can check the resistance of battery contact?
Difference of induction motor & servo motor ??
How do we calculate the Out put voltage of generator, after the excitation is being given?
what is the necessary of using inductance property in transmission lines even through resistance is used to opposes the high current flows in that?????
how to find motors H.P. whout any rating? (only give you a motor and multimeter)
What is MSL designation of a motor and same may be provided in details.
