Answer Posted / engineered

Yes we can,
we have to ensure following things
1. In order to cope up with starting current of motor, we
have to select higher rating batteries, we can calculate
Idc required at starting of motor.
We have to refer battery current charts.

I have successfully run 3 nos. 7.5kw motor on 200kVA UPS

but when i tried to run single 7.5kW notor on 20 kVA ups it
failes to start.

"TRANSFORMER MODELING AND ANALYSIS" MEANS WHAT AND WHICH TOPICS U READ IN THIS

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Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.

2765

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what is mean by restructuring power system?

2124

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in electrical control panel. how can i choose the cable rating. (example - 11kw motor, 18-25A mpcb}

2910

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How can we convert 11 kv to 440 volt without using transformer ?

1470

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we have one oven for 12 zone we are installed ir lamp in oven we control load from thyrister and 0 to 5vdc so our zone no 8 getting bright in fraction of second so what we do.. Please answer

1792

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why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?

2199

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What is the practical way to calculate the cable size for known ampere load?

1486

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If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

4544

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transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?

2146

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Why HT 11 KV Slipring Motors are connected in star ?

2275

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According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?

1952

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Pls Breifly explain about UPS (Inverter,Reserve,Rectifier,Float voltage,Boost voltage).

2826

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compare between starting charactristics of synchronous motor with those of 3Q Squirrel cage induction motor

1857

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what is fault level of power system ?

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