Interested to Buy Any Domain ? << Click Here >> for more details...
WHY IS RESTRICTED EARTH FUALT PROTECTION NEEDED?? WHY CANT
DEIFFERENTIAL PROTECTION SUFFICE???
- 14 Answers
- 29691 Views
- I also Faced
- E-Mail Answers
Answer Posted / sanjay
REF IS USED TO PROTECT THE SECONDARY WINDING (WYE
CONNECTED). IT GIVES SENSITIVE PROTECTION AS COMPARED TO
THE DIFF PROTECTION.
TO PREVENT MAL-OPERATION OF DIFF PROTN (DUE TO CT ERRORS /
DIFF IN SATURATION CONDITTIONS ETC) AS WELL AS THE
MIN.SETTINGS POSSIBLE IN THE RELAY, DIFF PROTN. CANNOT
OFFER SENSITIVE PROTN.
| Is This Answer Correct ? | 5 Yes | 2 No |
Post New Answer View All Answers
What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?
THERMAL CAPACITANCE IS MEASURED IN..................................................
1.what is mean by 8/20 micro sec waveshape
What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?
how many stairs have you climbed while you were coming
what are the breakdown voltage rating of mini- curcuit'transfarmer!
Explain the following and how these are working with PLC Unit 1 I/O Module Card 2 Adaptor Card 3 Ribbon Adaptor 4 I/O bus 5 I/O Devices
Do you know what is dry-out test in x'mer
how i can calculate the size for fire cable
I'm looking for a softcopy manual set for a Credence ASL- 3000. Anyone know where I can get it?
How to find out damper winding failure for synchronous machine?
Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards
i want some interview related questions with their answers which can help for attend the interviews...
What shall be the secondary output voltage if the primary winding of a 220/6V, 50 Hz transformer is energized by an 110V, 60 Hz supply?
differnce between single acting and double acting solenoid valves
