Water Immersion Pre-Stressing Test Machine of Composite Insulator

What is a water immersion pre-stressing testing machine?

The Water immersion pre-stressing testing machine for polymer tightness test is also called a water boiling machine in China.It is mainly applied in the insulator test of salty water boiling according to the IEC requirement to composite insulators. The composite insulator is to be put into the testing chamber and the machine heats the salty water in it till it’s boiling. After 42 hours (or more) of boiling, pick out the composite insulator when the water cools down and check the cohesion of fiberglass rod and polymeric housing. No detachment or gap shall be found between two surfaces of the material. After such a boiling process, a composite insulator shall be taken for the next stage test: electrical power frequency flashover test and steep-front test. So this polymer tightness testing machine is also used in the pre-test stage of the electrical test of composite insulator.

This testing machine can provide a convenient testing process for inspectors, with automatic temperature stabilizing function and time control, it has a digital display for operating to witness the entire process of test, which makes it very easy to operate.