when any relay trips in any ckt then what type of setting is
there in motor?what is function of relay in that ckt?
- 3 Answers
- 6766 Views
- Finolex, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sath
relays are classified into
under current, voltage, power relay,
over current, voltage, power relay,
distance relay,
directional or reverse current relay,
differential relay.
based on any one of the catageries the relay will
operate.Based on the application of the motor relay will
selected.
These are the device which direct the abnormal condition in
the electrical system by measuring the electrical quantity
like voltage, current, frequency, phase angle.Due the
abnormal condition any one of the above mentioned values
are changed.After detecting the fault relay will complete
the trip circuit and energised the circuit breaker.Hence
isolate the fault current.
| Is This Answer Correct ? | 8 Yes | 0 No |
Answer / ramesh
1st part of the Question is not clear...
Now come to the function of the relay...
It is a device which continuously compares the electrical
quantities in a line (i.e. voltage, current etc.. different
types of relays are provided for different purposes) which
are the output of sensing devices like INSTRUMENT
TRANSFORMERS (CTs & PTs) and if these values in line are
exceeded or reduced to the SET VALUE in the relay (this set
value can be said as normal operating values beyond/below
which the load/consumers connected to the line will not be
safe or equipment gets damaged for different reasons...).
If there is any difference in these two values (values from
the line and set values in the relay) relay senses this
abnormality and sends a signal to the circuitbreaker to
break the circuit. So these abnormal values will not be
reached to the end users/loads. So they are safe....
Is it clear...
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / santhoshkumar
single phasing preventer. If it happens motor winding may
get burn
| Is This Answer Correct ? | 0 Yes | 1 No |
What is the generating voltage of a power station consided generally?
a battery is having capacity 100AH and 25% charging .if a load taking 10A & connected 6 hour .what is the final condition of the battery.
how to calculate induction motor rating (HP) if name plate is missing from motor at site condition ?
6 Answers ABB, apatel, Bhel, Spatel, Voltas,
why do you want leave the company
The simple way of finding the leakage quantity and % in compressed air distribution system
How to design constatnt power source with variable current and Voltage.
Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.
Why we are going for converter transformers for DC drives application instead of distribution transformer?
why alternator is used instead of dc generator and induction generator
how does calculate loss correction factor in transformer
string efficient is 100% what is the voltage across the each disk?
What is the drawback of static coefficients?
-
Civil Engineering (5085) - Mechanical Engineering (4451)
- Electrical Engineering (16632)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
