SAFE EARTHING ELECTRODE

TRADITIONAL METHOD OF EARTHING

Here are one pipe, one inside the G.I / Copper strip i.e., Strip-in-Pipe Technology

One G.I / C.I. Particular Diameter

Safe Earth Electrode is not in direct contact with soil

The earth electrode is in direct contact with soil

Absence of Corrosion

Liable of fast corrosion subsequently decay of earthing pipe / plates

No Fluctuation in resistance value is has been proved at various sites that resistance value of safe earthing electrode reduce with age

Fluctuation of resistance value is more, resulting in frequency maintenance of gadgets / machines and may endanger human life too

Since SEE surrounded by highly conductive soil so the change dissipation through the electrode is very high and the current density across the electrode is very low which results in very high fault current sufficient to trip the fault relay

Distribution of short circuit is less terms of change dissipation therefore it generates high potential at the pit which result is low fault current is comparison to required tripping circuit of the fault protection relay

Very Good Galvanisation i.e., 80-100 microns

Galvanisation is not adequate

Pratically, no need to change i.e., fit and forget.

Need to be changed frequently every 3-4 years

SEE is non-corrosive, so there is not much variation in resistance values

Salt, Charcoal is used as backfill compound as salt is corrosive electrolyte, it corrodes GI / CI electrode. Finally get the high resistance value.

The backfill compound used is not soluble in water & it becomes part of the soil around the electrode

The backfill compound (salt) used will be washed away in rainy seasons and will be resulted as high  resistance value

It requires less space and time to install the earthing electrode

It requires a large space and time to install the earthing electrodes.