In the current market, there are some very simple and economical products, however these do not provide the required degree of effectiveness. This inadequacy stems from their limitation in the reach of their water stream and impact pressure on the contaminated insulators. Often these “economical” washers tend to not have safety devices incorporated in them. This is a problem because running out of water will damage the water pump. Effective washer systems have safety interlocks to prevent this from happening.
In order to wash at transmission voltages, the water must have a minimum resistivity value of 1000 ohms per inch, or 2540 ohms per centimeter or 400 micro mho/cm maximum conductivity. A washing system that meets this standard can effectively and safely wash all of the transmission voltages used today.
