Interested to Buy Any Domain ? << Click Here >> for more details...
Why restricted earth fault protection is needed? Why can’t
differential Protection is sufficient?
- 1 Answers
- 4377 Views
- I also Faced
- E-Mail Answers
Answer Posted / mazen
restricted earth fault relay shall be provided for each
neutral earthed star winding of power transformer
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
Do Phase angle measurement have any application in freq/harmonics measurement? If so how?
I want to know how to calculate the size of electricity cable in building?
How efficiency of thermal plant can be improved?
Explain the operation principle, advantages and disadvantages of the following converters: a) A 12 pulse converter b) A Switch-mode inverter c) A thyristor inverter
WHAT IS DOL STARTER? HOW IT WORK? GIVE ITS CONTROL AND POWER DIAGRAM .
How to find ampere on ht side for selection of cable size ???
What is speed mode?
what shoud be strength and weakness to impress interviewer????????
WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?
Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?
Is it required to use Automatic transfer Switch in L&T panel board if we use AMF panel with DG set? How the single line diagram will be? Please forward the material to sreenu_207@yahoo.co.in
how to calculate the breaking capacity of different breakers.
HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.
How LT megger works ?
can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?
