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Home » Power Brand » Maintenance of Earthing Electrodes

Maintenance of Earthing Electrodes

By August 12, 2017 1:43 pm IST

Maintenance of Earthing Electrodes
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Poor grounding contributes to downtime but an excess of good grounding is also dangerous and increases the risk of equipment failure.

The purpose of earthing is to ensure human safety as well as instrument safety. Higher earth resistance can cause fault currents to flow through human body causing serious injury or death. The ideal value of earth resistance should be around 5 Ohms.

We often add water & add salts at regular intervals into the earth pits in order to maintain the value of earth resistance. This keeps the earth pit moist and damp. Over a period of time, the corrosive soils with high amount of moisture, salt content and high temperatures can degrade the earthing electrodes and their connections. The earth resistance when the earthing electrodes are installed is lower but over a longer period, the earthing rods starts eroding ultimately increasing the resistance of the ground. This may result in bad earthing adding to the risk of loss of safety.

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Pranav Bhargav, Product Manager –
TMI, Rishabh Instrument

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