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Emergency Restoration System (ERS) for quick restoration of power

Failure of transmission towers leads to an interruption in power transmission and creates havoc in the power transmission sector of any country. It has significant consequences on population, economy and public services. Natural disasters caused by high-speed wind or cyclones, floods, change in the course of a river, landslides in hilly terrain, earthquakes and man-made calamities may cause the failure of transmission towers. Weather conditions are unfortunately getting more extreme year after year in all parts of the world. Scientists predict cyclones, fires, torrential rains, floods, snowfalls, and ice storms will intensify in the decades to come. This will make electricity grids more vulnerable in developed as well as in developing countries.

Permanent restoration of tower failures takes several weeks, resulting in interruption of power supply to the public and substantial monetary losses to the power companies. Emergency restoration systems (ERS) are modular aluminum towers used to quickly restore power on
damaged power transmission lines and facilitate scheduled maintenance work with a minimal power interruption. These are temporary structures that can be deployed typically in 2-3 days, as against several weeks required for permanent restoration of the towers. ERS holds high significance as occurrences of tower failures have increased over the past few years.


BNC Power Projects Ltd have been providing this service to the Transmission industry for last …. Decades and have successfully implemented this technology to avoid long outages and immediate restoration of the affected Transmission line.

The Hot Stick Technique:

This technique employs an epoxy glass stick that protects the line worker from a grounded source while working on live lines. The stick insulates the lineman from the electricity and allows to work without any hazard. This technique allows working on live line from 132 KV to 220 KV voltage level.


Bare hand Technique:

By utilizing this technique, our expert team works on high voltage transmission lines for maintenance works.


Rubber Gloves Technique:

This refers to usage of insulating gloves and sleeves while working with scaffolds, ladders, which protect the hands while performing any repair or maintenance work.

Our EHV Live Line Maintenance works include:

  • Live line testing of insulators.

  • Live line contact resistance measurement of diverse bolted joints, compressed dead-ends and mid-span joints etc.

  • Replacement of all types of insulators like tension strings or suspension strings.

  • Replacements of 400 KV tension insulator and 400 KV suspension insulator strings.

  • Repairing of full load conductors with the help of sleeves and strengthening, replacement of mid-span joints.

  • EHV live line washing of insulator strings.

  • Measurements of temperature at clamp terminals and connectors.

Thus, BNC Power takes a plunge in offering efficient and accurate live line maintenance in India with utmost safety.

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