What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?

0 Answers  

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why we use post insulators in no ofstacks at substation for supporting equipment ? why we not use single post insulator

3 Answers  

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Why we use series reactor in power system?

9 Answers   Cadbury, HEG, Uttam,

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Two alternators say 1 & 2 are poised to parallel operation. But at the time of paralleing alternator 2 gets out of the system by tripping Earth fault relay. Please send me reply why this is happening?

2 Answers  

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how to calculate the distance relay faulty zone?pls explain?

0 Answers  

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how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)

0 Answers  

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we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?

0 Answers   Siemens,

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why voltage swells and dips???

3 Answers  

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if AVR fails in alternator. what will be the effect.

13 Answers   HP,

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How Can You Relate Power Engineering With Electrical Engineering?

0 Answers   ABB,

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HOW DO I CALCULATE OVER LOAD RELAY & CONTACTOR IN DOL STARTER? & in dol why it is require circuit breaker?

6 Answers   DLF,

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Can any one tell me the current VAT, Sales Tax, Octroi and Excise duty for the financial year 2009 -2010. Say control panels are manufactured in maharashtra, then what will be the taxes for within Maharashtra and outside Maharashtra?

1 Answers  

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