What is the purpose of SOTF being used inspite of distance
Protection given?
- 7 Answers
- 47181 Views
- Alstom, I also Faced
- E-Mail Answers
Answer Posted / deepak.vin208
SOTF is known as Switch On T Fault as the name suggest it will act when there is fault on the line when closing. Here you asked the question of why we use even Distance protection is there. In distance if the fault is in Zone 2 as per distance protection it will operate only after predetrmined time normally 0.3 or 0.5 Seconds for Zone 2 but this type of faults has to be removed instantaneously but in this condition as Distance Zone Fails SOTF which clear the fault instantaneously. This fault mostly occur while restoring the line after maintenance if earth switch not open at other end of line normally this will be in Zone 2 of distance as Zone 1 will cover only for 80% of line so in this case SOTF will act faster than distance.
| Is This Answer Correct ? | 17 Yes | 0 No |
Post New Answer View All Answers
Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.
THERMAL CAPACITANCE IS MEASURED IN..................................................
what is your aim
Tell me about ur past electrical maintanence job
when will be the iocl interview results ifaced the interview on september 8 th
In convertor can we use rectifier thyristor in place of invertor thyristor with explain.
How convergengr of nr method is not dependent on selection of slack bus and how gauss siedel method depends?
WHAT IS counter flux IN CT?
If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.
Starting times for soft starter & power factor is thier any standard or datas available in manufactures list. Kindly suggest.
What is a diode?
what is meant by neutral compensation factor and where it is used
Post possible questions for Power Factor Panel FAT / SAT
armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?
