kindly send me 11KV MV motor differential protection procedure by primary injection method.

0 Answers  

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Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?

0 Answers  

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what is the difference b/w winding insulation class and winding temperature class?

6 Answers   Bhel, NDPL, NTPC,

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we change the speed of the synchronous motor by incresing or decreasing a rotor resistance

1 Answers  

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can we charge 3 ph power transformer delta-star wound with neutral grounded 6.6kV/415V from secondary side(415V) but with primary(6.6kV) open by dg,what are the disadvantages or losses.

1 Answers  

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Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?

0 Answers  

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what is impedence (Z) of transformer, what indicate in transformer , which perameter indicate in transformer

5 Answers   CTS, Suzlon,

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how is choose &depending upon the load why?

1 Answers   HCL,

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why do select 11000v rubber mat even we use only 415Volts

1 Answers   Saint Gobain, Tata Steel Limited,

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advantage of using 110v than 230v

1 Answers   NTPC,

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what is AB switch???

6 Answers   NTPC, Simplex,

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when we should use Central Battery system and UPS system and why? in other words, what are the differences between the two systems?

1 Answers  

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