Interested to Buy Any Domain ? << Click Here >> for more details...
Why Diffrential and Ref relays are used together although
Diffrential relay can protect Pri and Sec of Transformer
- 1 Answers
- 4437 Views
- Qatar Gas, I also Faced
- E-Mail Answers
Answer Posted / bandarawy
The normal bias setting in a differential relay is 20%.
So, complete earth fault protection is not possible with
differential relay. That is why you need a seperate earth
fault relay with sensitive settings like 5%.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
Which Class insulation is prefered for the sandwich Busducts ? Why?
in conventional fan regulators how the current varies with speed?
63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?
what is the min and max ohmic resistance for the earthing rod installed for lighting poles for street light network
Alternator rotor earth fault relay circuit
What is the difference between electronic regulator and ordinary rheostat regulator for fans?
whatis the commertial spec. of distribution boards ?
what can be the causes of capacitor start motor having a higher current that its actual
A parallel flow heat exchanger will perform better than a counter flow heat exchanger. State if the statement is true or false.
Explain with example of functional requirements of protection relay in terms reliability, selectivity, sensitivity
At what factor resistance r of a conductor depends?
what is the prinsiple of dc motor and construction and working ,application of dc motor.
what is destructive and non-destructive testing of welding
5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
How to calculate the copper in HT motors if KW, RPM & Voltage is given
