Answer / lalit

every insulator is classified and used according to its
capability of bearing voltage limit. stay insulators can't
bear high voltage. they get punctured or breakdown to this
limit. that is why they cant be used.

Answer / david

The stay insulator 'should' be used for all 'insulating' ie timber poles carrying any cables with more than 100v. This includes 415v, 11KV, 33KV and higher. It is a 2nd level of protection to prevent fallen uninsulated power cables from transmitting energy into the ground, creating dangerous step potentials and touch voltages for wayward humans. The line to earth voltages are typically lower than the 11KV or 33KV, and a smaller stay isolation insulator can be used.

What is LOTO?

6 Answers  

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what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

0 Answers   Jindal,

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what is the difference b/w UHVDC and HVDC(LIGHT)?

4 Answers   L&T,

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what is the differation bewreen kwh & fundamental kwh in electronic trivector meters

0 Answers  

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why the transformer was not rotating like a motor?

5 Answers   TATA,

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why we step up voltage for reducing the loss, even if voltage and current are proportional anr resistance remains same

12 Answers   Sarhad University,

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What is MS-EXCELL?

0 Answers   NTPC, Siemens,

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What Normal(Tangent) towers and Tension(Cut-point) Towers?

1 Answers   ABB, BGR Energy, NTPC, Powermec,

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It is observed that AVR of an Alternator is more likely to fail if the Generator and Mains Neutral are directly connected to each other. Why should this be so?

1 Answers  

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If load is 240 kw & pf is 0.8 lagging, than how to increase it from0.8 to 1.0(unit),which rating capacitor used, please give me Calculation. What is effact of consumer & suplier if pf is lagging or leading with on effect machines/ TF/GE etc.

6 Answers   L&T,

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What is SNMP Card Monitoring in UPS???

2 Answers   Emerson, MAA, SNMP,

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can u please tell me how VFD(variable frequency) drive is used as a energy saver....?

12 Answers   Essar, Oracle,

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