why the value of impedence is taken as %impedence in fault
currrent calculation
- 1 Answers
- 2419 Views
- I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
Percentage impedance = Full load current x impedance x
100/rated voltage . It is the percentage voltage drop at
full load ,in the tr.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
2 v/500amp/hr to 1.80vpc at 20 degree celsious 2v/5ooamp/hr to 1.75 vpc at 77degree farren .this is the capacity of a battery .what is the meaning of this . can i get a detailed explenation
what is meaning of bus riser
how to select size of hardware for linking aluminium busbar is it depend on area of busbar or current flowing through bus bar
please explain how to do 'pole drop test' on generator?
what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?
formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
What is mean by spike arrester(Voltage Operated)
IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?
What is the difference between multimeter
how to select energy meter? have any calculation?
Differentiate between kirchhoff’s first law and kirchhoff’s second law?
How to select a cable size for particular load?
why we used dc supply for field in dg set
