Interested to Buy Any Domain ? << Click Here >> for more details...
A motor works on 30kw.it is working on 440volts.How much
amper will be Required?
- 7 Answers
- 11230 Views
- I also Faced
- E-Mail Answers
Answer Posted / dinesh raj
Voltage =440 V
Power Facter (cos@) = 0.8
Power P = 30kW = 30000W
Formula for 3phase power P = sqr(3)*V*I*cos@
So Current I = P/sqr(3)*V*cos@
I = 30000/1.732*440*0.8
So Required amper = 49.2 A
| Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
How we select the vector group of 3phase power transformer?
How to work meggar?
Name two low frequency oscillators?
We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.
in general it is observed in power stations, the tertiary winding is used in higher rating Y-Y auto transformer but not in Y-Y power transformer. is the tertiary winding is compulsory then why it is not using in power transformer
what happen as when voltage drop(or may decrease) ? in case of atomic base theory?
how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)
Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.
Post possible questions for Power Factor Panel FAT / SAT
Advantages/Disadvantages of earthing of neutral bus on MSB instead of separate neutral earthing for transformer/DG sets feeding to MSB
How much of the total hydro power potential has been exploited so far in india?
Can anyone please provide me details of MCCB/Contactor/SFU rating calculations for a motor feeder..for example 50 kw.. not from type-2 cordination chart. i want manual calculations..
Discribe type of fault in DOL and stardelta startor.
