High voltage underground multicore cables usually used for the transmission and distribution of power have metallic sheath or metallic wire surrounding the cable. Metallic parts of the conducting cable tend to carry substantial portion of the fault current when interlocking or corrugated armor were to come into contact or close proximity with electrical current from sources such as exposed wiring, faulty electrical systems, lightning or other events.
This creates the potential & induction phenomenon & can be really hazardous as they cause - electrical shock, fire, damage to electronics and system failures resulting in downtime. We are here with the exact solution i.e. – adopting a Maintenance free earthing system involving copper bonded rods, earth enhancement compound and exothermic welding system/ clamps.
An alternate path for the fault should be provided to enhance the stability of voltage conditions, preventing the excessive voltage peaks during faults by simply grounding and bonding both ends of the metallic sheath. Earthing is the process of discharging fault current to the ground through a low resistance which should be installed with immense care.
JMV an expert dealing in the manufacturing of electrical safety products and solution aims at executing things accurately for it to be effective and everlasting. Earth being an excellent conductor, the overflow of excess energy will be directed to ground when earthing is installed and is essential to avert a person from being the low resistance path. A ground circuit should be established for the metallic sheath and armour of multicore cables for safe electrical system operations and for reducing the circulating current and potential difference between sheathing.
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