what are the specifications for Dc cables of higher rating
Answer Posted / loboreliance2003
The DC voltage rating for high voltage insulation does not
take into account RF coupling of high voltage AC Signals
through the insulation to grounded objects. It is found
that high voltage wire insulation must be de-rated by
approx. a factor of four for the high voltage frequency
levels used. For instance, to run a 10KV triangle wave at
1KHZ requires insulation on the test cables with a DC
rating of at least 40KV.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA
i have 500 amp inductive load of motors ,,,pleas tell me how can i calculate for capacitor bank for improving my power factor to 99 .....calcullations for capacitor bank,,,,
from which subjects most of the technical que will b asked for hpcl(electrical).pls help me
what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?
why power factor is important?
Iin ESP why positive is grounded ? why not negative ?
why a tester wont shock while testing the power in house
why using transformer and thyristor switch in 3 phase apfc panel
What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?
I am applying for NTPC examination.Can we please provide previous paper to my mail prasad.chintala108340@gmail.com
please give me all the Alarm .Trip ,Safety Relays & Conditions of UPS Systems mail me on ashokbabunhce@gmail.com
Dyn1 transformer vector group testing how to do
how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???
Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?
To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors