Interested to Buy Any Domain ? << Click Here >> for more details...
If single phase having 220v so why 3phase is440v.
- 7 Answers
- 24262 Views
- DLF, I also Faced
- E-Mail Answers
Answer Posted / supreet virdee
hey if we consider 3 phases R,Y,B
we know tht in each phase there is 220v that means in 3 it
should be 660v. but we gnerally consider 2 phase i.e.
combination R-Y,Y-B,R-B, there fore the total voltage is
440v or 415v.
| Is This Answer Correct ? | 14 Yes | 13 No |
Post New Answer View All Answers
state the working of discharge lamp?
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?
draw vector diagram and +ve,zero sequence diagram of symmetrical three phase fault.
what will be the effect if you were using different brands of outlets?
I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?
how meger function
where does 22kv line starts
whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?
How colour picturetube works & how many year it will works.
why we are not giving the zone 1 trip command to the master trip relay
which cable is used for 15 Hp monoblock pump 3phase and service wire Distance is 210 feet please tell me cable size Armaured
what is photo voltic cell,& what are the materials associated with that?and any spcifications like volts/cm etc?
While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x
calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.
Why the field rheostat is adjusted such that the voltmeter reads 380V
