Answer / vinay gupta

between earth to phase it must be from 50megaohm to
infinite. and from phase to phase it must be from
500megaohm to infinite.

Answer / praful

Thumb rule to measure the IR value is add 1.5 to the
operating voltage (convert the voltage in KVolts) the
answer is the min. required safe IR value (Mega ohm).
For Example the Operating voltage is 22kV then 1.5 + 22 =
23.5. 23.5 Mega Ohm is the min. IR value required.
The IR value must alaways be on higher side.

Answer / shivkumar sharma

Between Earth to phase insulation resistance must be twice
of operating voltage by H.T.( 2.5 k.v./5 k.v. )megger

Answer / mintu kumar pandit

insulation resistance 11kv to 33kv minimum IR value for new
cable ph to ph & ph to earth 400 megohms for 100 meter 1 minitue
cable after repair the resistance must not be less that
10 megohms ( megger size 1kv )

What is ST and specify its range of voltage.

0 Answers  

---

Why we use parllel operation of alternator

1 Answers  

---

how to find motors H.P. whout any rating? (only give you a motor and multimeter)

3 Answers   L&T,

---

HOW DOES THE FAN REGULATOR CONTROLS ITS SPEED

6 Answers  

---

what is "PE" earthing? and what do u know abt 16mm cable?

1 Answers  

---

---

if we connect a ohmmeter across shorted capacitor .what will be the reading..will it be zero or infinity

2 Answers  

---

i have DEEE certificate in vinyaka misson unive rsity. is a INGNO if possible get the electrical C licences in Tamil nadu?

0 Answers  

---

From, which load current range ( upper - lower limit current)can Air circuit breaker used for in electrical circuit.

4 Answers   ABC,

---

What is difference b/w fuse and breaker?

3 Answers   Jindal,

---

how can i get an electrical c-certificate?

0 Answers   Wartsila,

---

what is the purpose of %impedance for transformer

3 Answers  

---

What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?

0 Answers   MES Military Engineer Services,

---