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.
1548ro 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 2589What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?
2499whats 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 3916) why transformer cannot rotate though the principle behind induction motor is similar to a transformer
3 6149What happens if 25 Hz frequency is applied for 400/200,50 Hz single phase Transformer.Will Voltage increase ?
2 10515some 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?
1327The 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 13417Post New Electrical Engineering Questions
explain PV modules in solar energy generation.
Define de-sensitivity?
How would you calculate power loss in a resistor?
i applied for the ap transco please forward the freqventley asked QA
A Generator is in running condition and Rotor earth fault alarm is coming.How to check on line(i.e in running condition) whether there is actual earth fault in rotor or not.
if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .
is that any software calculator to calculate the size of cable
Define rise time.
Why we use circular(Stepped) cross section in transformer core?
what is magnetizing and demagnetizing current in generator and motor?
Please elaborate th´evenin’s theorem?
When color of silica gel will gets change from blue to pink from Top to bottom?
Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.
What does Bode plot tell you?
solar energy light efficiency & disadvantages?
