Answer / amit sharma

distance relay operates on the zone impedance. If impedance
seen by the relay in the zone is less than the rated imp.
then relay trips and the zone is isolated.

Answer / d ramesh

Distances relay senses the faulty zone if impedance seen by
the relay is below the set value then it operates and
isolates the faulty zone.

z=v/i below the set, then operates
zone1= 80% of protected line
Zon2=100%protected line + 50%shortest line
Zon3= 100%protected line + 100% longest line.

Answer / sukhvinder

relay works is ratio of voltage over current.line is
divided into zones zone 1,2,3. zone1 is 80 per of line and
set for immediately trip for line

Answer / limbian

Distance Protection Relay senses the faulty Zone by
recieving signal from Voltage Transformer

Answer / j.kesavan

it is sense sending end receving end voltage relay trip
depending upon voltage.

1.What is captive power plant? 2.What is national grid?Give brief idea.

0 Answers  

what is the differencce inn series and cascade connection??

0 Answers  

difference between synchronous reluctance motor and switched reluctance motor

1 Answers  

how will be power factor while using the resistive load and Capacitive load?

3 Answers  

how and where megger works?

9 Answers   Power Grid,

In iduction motors the current is higher than normal for both the cases when the voltage appllied is more than the rated as well as less than the rated, why?

2 Answers  

when current lags behind voltage how does it affect the circuit.In other words what is the significance of lagging current?

3 Answers  

What is meant by IP55 motor.Where it is used?

2 Answers   Zuari,

could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?

0 Answers  

how electrical energy is converted into mechanical energy in dc motor

3 Answers  

Under Ground Power cable earthing is required at both end or single end? and reason for the same

3 Answers  

Why do power lines not short out when they fall into water?

0 Answers