we have taken HV test of 2.5 k and Megger test on 11 kv HT
cable.here it shows no fault but when we are charging the
same cable with 11 kv supply why the VCB 11 kv gets tripped
can anybody define the possible cause of fault ?
At 765Kv, I have seen the use of PT at line side for
metering and CVT for protection, although as far as my
knowledge is concern, PT at this voltage level will have
huge loss and more cost as compared to CVT as CVT can also
perform same function of Protection and Metering? So my
question is why use PT and not CVT for metering and
protection in order to reduce the cost.
Dear Sir/Madam,im going to attend Hpcl written exams on feb
17th in instrumentation stream..can anyone send me the
HPCL model papers and pattern of HPCL ....i ve not yet
attended anything in HPCL...so i dont know how it
comes...so just i need some model test papers and
pattern ..pls help me friends...
What is critcal speed.
what is resonant frequency.
why we want to cross crtcal speed on higher RPM (early).
Greeting to all members,
How to calculate spill current when we have different ratio
CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side
n 400/1A CL.X @ Neutral.
Draw a 230kv two-bus bar system showing the following.
1.Two generators (150MW) each connected through one
2. 1 outgoing lines
3. Two 230/130 KV transformers
4. BUS PT's 5. CT
How does the steam work in a steam turbine?
how to success for interview
what is meant by negative sequencing in power
system.explain in detail
What is WPS?
what is allowed value of zero sequence impedancce of 6.6 kv
nuetral earthing transformer ?what is the actual value
operation of carrier aided protection and what is the basis
for choice of frequncy in powerline carrier system
i want the aptitude test papers of wipro can any one help plz
what is studds? where it can be done?
What is location update? Why do we need location update?
how to determine the correctness of proportion used in cement mortor and various IS codes to determine the same?