Prior to the use of helicopters to combat electrical pylon insulator pollution, the washing of insulators was conducted from the ground. Apart from being very time consuming, it was also found to be ineffective. Heli-borne insulator washing is a common technique and applied in various western countries with great success.

The Insulator Washing System:

• Can be used on all live line systems from 11Kv to 765 Kv.
• Two-crew: 1 x pilot and 1 x boom operator.
• The pump is capable of operating at an adjustable pressure of up to 140 BAR and a flow rate of up to 41 litres per minute.
• The belly mounted water reservoir accommodates 350 litres of water.

Some benefits to the customer

• Prevention of flashover at insulator thus preventing line failures.
• It is possible to wash up to 600 insulator strings per day, depending on external factors.