Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / singa
CTs are having both measuring as well as protection cores.
Measuring cores:
In a HT lne, current value is in terms of few hundrest to
kilo amps. In practical these cannot be measured by meters
direclty. Hence the current in the transmission line will
be stepped down to the standard values for example 2000/1A.
THis refers to the flow of 1A at CT secondary when 2000A
flows in HT line.
Protection core: As the fault current is very high during
the time of fault, this increase in current is used to trip
the faulty section. In order to sense the fault current,
protection cores of CTs are used to feed the protection
relay.
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
What is vaccum currcuit breaker.define with cause and where be use it device?
Is there any standard guidelines/Criteria to design NGR/NGT.?
sir please send me previous year questions of jspl of electrical section through which i could prepare myself fpr the test.
Why squirrel cage motor can only use with low starting loads ?
can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?
what is resver in electrical enginnering with answer
1.what is the reason for transformer and lightning arrester blast in 33kv system
What are the different types of controllers?
How to calculate cable size by using load.?? Any formula...
How to calculate the volumetric capacity of a oxygen & Nitrogen gas Cylinder if pressure is 145 kg/cm2 & water capacity of cylinder is 67 liters.
Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.
R=*ΒΆ l/a
How to calculate of maximum demand if given 628kw, 785kva, 0.8 p.f.
1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.
Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.
