what is the load amp for 1 HP 3 phase Motor ?

Answer Posted / karan

the thumb rule is,I= H.P*1.5
but current depend on Power factor,
Example power factor is 0.85
1 H.p=750kw=Root3*V*I*cosQ=1.73*415*I*0.85
so I=750/1.73*415*0.85=1.23 Amp

when pf is 0.80 then I=1.30

when pf is 0.95 then I=1.09

Is This Answer Correct ?    17 Yes 7 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

4131


How u can give the overload setting to any motor protection relay for a HT motors with formula and Example?

1650


please write motor, transformer, Generator setting, fault level calculation of Tr.etc

1516


How many gap between finger contact in a.c.b. and v.cb.?

741


how does the rotating m.m.f is produced in the 3-phase induction motor and how the poles are created in 3-phase induction motor ?

2217






why wire sizes are 3/29 or 7/29 and why not wire sizes are 2/29 or 6/29?

4655


How many sprinklers should be in one pipe line?

1421


This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?

1574


State the factors, for the choice of electrical system for an aero turbine.

662


hi everybody how to design string combiner box (scb) internal parameters like bus bar and spd (surge protection device and fuse which place to set that,and also bus bar one particular cross sectional how much heat generated and how much power loss tell me Clearly and briefly

1536


a starter used for squirrel cage induction motor?

1209


are there rmu for 3 transformer?

1416


hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...

2127


explain wiring system

2084


sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me

1471