how u select control transformer for a mccb panels or any panels?for expample we hav 440 volts maim supply and control volts is 230v?
1639How to run 1ph motor(230 VOLTS its full load amps is 4.5 ampa))with 480 volts main(we didn hav neutral)Thn we go for step down transformer.Our load 10 amps,so we conisder this amps in primary are secondary side?
1 2800140 is load amps for a equipments and what ratio of CT requied for installimg ammeter to amps montering purpose?
1 3378If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?
3924To test Transformer we give HT side 440V to see wheather that it is producing 17.6V on LT to verify Voltage ratio is correct or not but when we give the 440V voltage to LT side then what will happen to HT voltage ?
3 6654in 33KV or 66KV system which connection is aviable on high voltage transformer primary delta or star ?
3 5060Post New Electrical Engineering Questions
What is the working principle of MIG welding? and its out put Voltage?
How to test lightning Arrester?
Explain what is use of lockout relay in ht voltage?
how many electricity poles are there and what are the names and their sizes.
3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.
Approach of a cooling tower is the difference between temperatures of what factors?
What do you mean by distribution transformers?
why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.
If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?
why burdens of VTs is more than CTs?
What are the functions of temperature scanner in power transformer?
difference between ac series and parallel circuit
what precautions to be taken while desigining a LT,HT panel. Eg-LT panel PCC panel with ACB installed. HT panel VCB panel with VCB installed. & what is main diffrence betwn IP54 & IP55 construction of panel.
There is air in a room . the top and bottom of the room are at constant temp. T1 and T2. DRAW THE temp profiles if a. T1 greater than T2 b. T1 less than T2
how diside ct mf exmp.200/5 ct