Insulator Makes Life Better 
Current position: Orient > model >

Silicone rubber insulator property

One of the biggest problems in outdoor applications is airborne contamination that settles on the silicone rubber insulator surface. Anti-pollution resistance is the most important kind of Silicone rubber insulator property.

Silicone rubber insulator

used in pollution area

In some cases, these airborne particles are of natural origin, such as in a coastal region exposed to salt spray or ocean fog. Industrial sources, agricultural spraying and automotive exhaust can also contribute to reduced water repellency and diminished electrical performance.

Service long time in contamination areas, both ceramic and composite designs are subject to the build-up of contaminants. When contamination build-up is exposed to moisture, an electrolytic film can develop, leading to excessive leakage current, dry band arcing and eventually to flashover. Coastal environments have a particular problem, as the weather creates cycles of contamination followed by high humidity or fog.

The basic mechanism for contamination-induced flashover on static surface materials like porcelain can be summarized as follows
Contamination/flashover mechanism
◆ Contaminant deposition
◆ Conductive water filming;
◆ Leakage currents;
◆ Local heating;
◆ Dry-band formation;
◆ Dry-band arcing;
◆ Arc (and band) extension;
◆ Air ionization;
◆ Flashover.

For ensuring Silicone rubber insulator properties, we should test before insulator shipping.

 

Relative Articles:
Composite Railway insulator,25kv Silicone Rubber Insulator for Electrical Railways
Silicone rubber polymer insulators

 

About Us - Composite insulator manufacturer
More than 30 years experience in power industry since 1978 as a composite insulator manufacturer in China, advanced manufacturing process, strict quality control test system, ISO certificated, excellent communication, considerate services, enable us to be a leading composite insulator manufacturer of composite insulator and polymer insulator.
Our Advantage
ISO 9001 certificate
5000h Aging Type Test Report
Considerate after-sale services
Patent Product and New Technique
Instant Response for Each Requirement

©2014 Zhengzhou Orient Power Co., Ltd All rights reserved. Tel/Fax: +86 371 86097078 
sales@composite-insulator.com  Orient is a composite insulator manufacturer for products of composite insulator and polymer insulator