Traditional/Conventional Earthing
One Conductor pipe of particular diameter inserted in pit. Copper plate attached to the conductor. Salt and charcoal filled around it as backfill material. The conductor is in direct contact with salt & charcoal and thus it is corrosive.
Discrepancies of Traditional/Conventional Earthing
The salt poured in pit dissolves in water and gets deposited on the conductor and starts severe corrosion. The pipe is cut after some time and earthing is ineffective. The earth resistance value is very high and fluctuating. The earth resistance value increases heavily with time. The earth resistivity fluctuates with seasonal changes. Regular watering, recharging etc required. Periodical maintenance required and not regularly carried out. Low impedance value. Unable to withstand high fluctuations
SAFE EARTHING ELECTRODE
Safe Earthing Electrode (SEE) serves the purpose effectively. There are two pipes of different diameters. The smaller dia. pipe is inside the bigger dia. pipe and the annular space between the two pipes is filled with a special conductive compound, which avoids and resists the corrosion. The earth electrode is hot dip galvanized to enhance the life of the earth electrode particularly the outer shell which is susceptible to corrosion (depends on the soil conditions). Only the inner shell main electrode is protected by anti-corrosive compound. As the outer shell of Earthing Electrode is not perforated, there is no need of providing a funnel on top of the Electrode. Here the water is poured around the outer pipe, not inside the Electrode as is done in conventional Pipe Earthing.