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During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP
1848at high temperature conductivity increases for conductor what will happen for long transmission when temperature is high?
1 4208I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems
5 10057when we r using single phase load and we have power cable of 3.5core with .5 of neutral and neutral is suppose to the returen path of the phase how much current will flow in the neutral.reply.
2 4885why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you.
1821What should be the voltage between Neutral and Ground in secondary side of the step down transformer (230 V to 110 V) with no load condition?
1990Can you use step up generator transformer of voltage ratio 16.5kv/420kv in place of step up generator transformer 15.75kv / 420 kv
1 3583What is power factor ?What are the benefits of improved power factor & how. Please explain with examples.?
ABB,
5 12824Post New Electrical Engineering Questions
We have two parts in generator, electrical & mechanical. how it works?
I want to know Electrical Circuit?
what is the meaning of 0.5ohm Resistance
In how we connect watt meter for open & short circuit test of a single phase transformer.
How PSV sizing being done
how we find transformer capacity by ohm
Whether it is possible to measure energy at the input of rectifier transformer (12 pulse with very high odd harmonics)
I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???
Transmission through a short line depends on
What is grid collapse? what is the reason for it?
What is the maximum and minimum rating of UPS?
How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current
Why Ac Systems Are Preferred Over Dc Systems?
What are the reasons for the parallel operation of transformers?
What is the actual calculation for transformer short circuit test?.
