What is 100%
protection of
generator? Why
95% protection
is used not 100%?
- 9 Answers
- 37395 Views
- NTPC, I also Faced
- E-Mail Answers
Answer Posted / shailesh tankni
generators are basically synchronizing machine if a fault
occurs, they fall out of synchronization. but if the fault
is temporary or for a very small duration micro seconds or
seconds then the alternator/ generator may again achieve
synchronization without permanent interruption of supply.
this is the reason why the 95% protection is provided
instead of 100% protection.
otherwise for even for the small fault we would experience a
cut off eg: a small fault like contact of two phase
conductors due to sudden wind. which is a temporary fault.
| Is This Answer Correct ? | 42 Yes | 36 No |
Post New Answer View All Answers
lamination figures
cc of scorpio?
how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)
if 3400kw slipring motor rotor shorting done and motor started on mv drive ,what will be the rotor shoring current
a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn
what's the exact magnitude of current, flows through Neutral?
I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)
what ispositive, negative, zero sequence impedence?
Draw the line diagram of diffretial relay connected to transformer?
what is earth pit , how we can measured it, what earth rods reference
The moisture in air will condense at
how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)
why the difference arise between HT reading & LT reading (submeters fixed in complexes, apartments etc)if the power factos exceed from 0.9 to 1 can the ht meter reads fast?
Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.
why does rotor rotets?
