How reverse power relay sense the power is reverse in the
system.
Answer Posted / mahendra
Reverse power relay which acts according to the direction
of current flow.
For Example : it is normally used in Generator protection.
because generator produce power ie it gives the current.
when the generator speed reduced, load decreaes to zero
gradually, power will flow into the generator & act as a
motor if the Generator circuit breaker is not opened.
This is sensed by the CT, direction of the flow of current.
Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram
Electrical 'C' license full abbreviation , and full form
what is subtransient , transient and steady stateac components
What is the formula to calculate the rating of power cable for three phase current.
What are the effects of adding a zero to a system?
How efficiency of thermal plant can be improved?
Load break swicth maintenance procedure.
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
Difference between On Line capacitor and Station Type capacitor.
1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve
what is allowable ac mixing in dc
if a.c supply is given to the motor,, what happen?
why is control bus bi-directional?
If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.
any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?