Interested to Buy Any Domain ? << Click Here >> for more details...
I want to know what must the CT ratio be on a load of 300A
is a 3PH nutral to earh installation?
- 4 Answers
- 5839 Views
- I also Faced
- E-Mail Answers
Answer Posted / a.p.nanjappa
The neutral is a point in power transformer or in motor
connection where all phases are connected.In this point
voltage is zero. when you connect thisoint to earth, the
fault current or capacitance circulating current flows to
earth.
when a fault occurs , current is high.Therefore,CT ratio
should be 1000-1200/5 or 1A.
It is usually upto designer or protection device supplier.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
What is the unit audit? if our Max demand is something and we found much more unit then how to improve our max demand?
What is inductance?
Hello to all, Please someone can send me HPCL ELECTRICAL Engg. Sample papers to me? Its urjent....my email address is.... raviasiapacific@gmail.com
What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?
3ph motor running with unequal kw and different pf what are the reasons
How impulse levels are calculated that for 11kV impulse is 75kvp, for 24kV impulse is 125kvp ?
should %impedance be high or low in a power transformer? if so why?
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?
prove that power consumed in 3 phase delta system is 3 times as compared to 3 phase star system
How does a television work?
1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?
what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator
what will happen if i connect 12 volt battery with 24 volt battery charger.
what is earthing.how we make it,describe briefly.
Is it acceptable of installing an earth pit in planters area where bare copper cable, earth rod and connection are susceptible to corrosion due to water?
