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i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.
1933ro plant grundfos bm30type pump.we start the pump using siemens 3rw 4423-1bc44, 30kw soft starter. bur its failier frequently. so we planed to change the dol starter. sp please tell me any budy its possible or not翿შ†
1 3276What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?
2988whats happen if we disconnect the NGR of alternator in running condition?. Generally we observed that transformer netrul is directly grounded but alternator connected with NGR, then ground?
1 4628) why transformer cannot rotate though the principle behind induction motor is similar to a transformer
3 7493What happens if 25 Hz frequency is applied for 400/200,50 Hz single phase Transformer.Will Voltage increase ?
2 11542some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?
1769The transformer which is smallest in size is and how to calculate that? The options are 100 KVA, 50 Hz 100 KVa, 100 Hz 100 KVA, 25 Hz 50KVA, 25 HZ
4 15418Post New Electrical Engineering Questions
I am experienced with house and industrial wiring but I don't have any licence how can I apply an licence and which type of licence i can get i didn't complete deee just only experience
what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?
what is negative and zero impedance in 3 phase induction motor ??
Why 9KV surge arrester having 7.65KV of MCOV?
what's the exact magnitude of current, flows through Neutral?
In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.
what is the best transformer oil breakdown voltage?
WHAT IS THE MEANING OG (li = 7 In)
Sir 33kva 2 transformer load 900 amp calc 1800 amp mana jayega
What is the function of RCBO? What are the different sensitivity ratings & each application?
sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"
What do you mean by passive circuit elements and why these are called passive?
From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?
hi frnz,can somebody give me any project work? i am a 2nd year student & interested in practical works...plz give me some projects
what do w do when the output of generator is fluctuating?
