Answer / avinash kumar

the charcoal and salt are added in the earthing pit to simply increase the conductivity or in otherwords to reduce the resistance of the earth..this will give reliable earthing...

Answer / kirubakaran

to reduce the resistivity of the earth

Answer / vanthni@yahoo.com

we that charcoal powder is a carbon content substance it act
as a semiconductor and salt is soluble in water , earth bit
after finishing time we put water required, now salt is
connected the earth electrode and char coal powder and
ground so we use them

Answer / ashok mishra

charcoal makes to carry the moisture content and salt to produce the HYDRONIUM ions so both are added alternate way in the earth pits
SDDIET barwala

Answer / k.prakashchandra

To increase the effective contact area between earth electrode and the earth .

Answer / bala.a

Hai
go and Ask your GM and DGM , THEY NO VERY WELL

why the secondary current transformer cannot left open

1 Answers  

How to calculate the average power factor in 3 phase unbalanced system

5 Answers   Bhel, MacLellan,

when current lags behind voltage how does it affect the circuit.In other words what is the significance of lagging current?

3 Answers  

what is the difference between high impedance & low impedance

1 Answers   L&T,

how to check a three phase induction motor by multimeter & megger?

2 Answers  

How RTCC works with OLTC

1 Answers   Siemens,

Why generator is not connecting in delta ..why connecting in star ?

4 Answers   Bhel, Foretec Engineers,

How much is the starting current for HPMV lamps. How many lamps can u wire in a circuit

1 Answers   Technip,

what will happen if i will done heart shape hole in transformer core?

1 Answers   Bhel, ONGC,

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING) I O (current operating)?

0 Answers  

what about SAP/MRP regarding manufacturing of electric motors and all drives?

0 Answers  

How can you calculate in detail the VA burden of current transformer used for Restricted earth fault protection? Please understand that the CT required here is Class PX or X. Also please show the calculations for knee point vtg, stabilizing resistor, magnetising current.

3 Answers