Substation Grounding / Earthing

Substation Grounding/ Earthing

The sole purpose of substation grounding/earthing is to protect the equipment from surges and lightning strikes and to protect the operating persons in the substation. The substation earthing system is necessary for connecting neutral points of transformers and generators to ground and also for connecting the non current carrying metal parts such as structures, overhead shielding wires, tanks, frames, etc to earth. Earthing of surge arresters is through the earthing system. The function of substation earthing system is to provide a grounding mat below the earth surface in and around the substation which will have uniformly zero potential with respect to ground and lower earth resistance to ensure that

• To provide discharge path for lightning over voltages coming via rod-gaps, surge arresters, and shielding wires etc. .
• To ensure safety of the operating staff by limiting voltage gradient at ground level in the substation
• To provide low resistance path to the earthing switch earthed terminals, so as to discharge the trapped charge (Due to charging currents even the line is dead still charge remains which causes dangerous shocks) to earth prior to maintenance and repairs.

here some pic of the works :- 

this is the starting point when we dream bigger, real high risky job.

its not easy as we see, knowledge people should handle this not anyone.

Safe reminder * Electricity is dangerous, don't play with it"

Electrical contractor :-

we accept job for subcon/labour sub for electrical work depending on the job.

terms and condition apply.

Call/Whatsapp : 010-4740 800