Insulators and Bushings
1. New insulators need only be high-pressure water washed. Whenever,
possible use deionized water for cleaning. If insulators are contaminated
with grease or oil then solvent cleaning or SSPC-SP1 can be used. A fast
drying solvent such as lacquer thinner should be used.
2. Existing insulators may need more aggressive cleaning. Environmental
deposits such as minerals, chemicals and dust need to be removed. Carbon
deposits formed by current tracking need to be completely removed. Several
methods of wet and dry abrasive blasting are acceptable such as:
* Wet or dry soda blasting
* Dry blasting with corn cob
* Dry blasting with corn cob and lime mixed
WARNING! Soda is conductive and needs to be completely removed
before switching equipment back in. Corn cob fall out needs to be removed
to allow for proper drainage.
Siltech 100HV has excellent adhesion on all metal substrate and requires
only a clean, dry surface before application. All surface contamination
may be removed by SSPC-SP1, SP2 or SP3.
Requirements Insulators and Bushings
Due to the irregular configuration of insulators, it would be impossible
to maintain consistent dry film thickness. An optimum dry film of 18 mils
with a range of 15 to 20 mils should be maintained.
WARNING! Siltech 100HV is not formulated for live