200kv BIL Station Post Type Insulators 231HU0200
About
GAMMA’s solid core porcelain station-post Insulators are ideally suited for substation bus support and switch applications.
Station posts in this catalog are available in standard strength, high strength, and extra high strength, in ratings from 95kV BIL through 1800kV BIL, and for applications ranging from 7.5kV through 500kV operating voltages.
Each insulator body is molded from the highest quality raw materials produced in our state-of-the-art mineral processing facilities, yielding a product of exceptional wet process workability, purity, and uniformity.
The entire surface of each station post receives a smooth, uniform glaze, in either gray or brown, to provide maximum mechanical porcelain strength, to resist the accumulation of contaminants on the surface, and to facilitate ease of cleaning via rain or routine maintenance. In addition, the product line features uniform surface drying and voltage distribution to prevent flashover as well as dry-band arc suppression for high performance and long term reliability.
All hardware fittings are manufactured using hot dipped galvanized malleable cast iron or ductile cast iron, and are designed specifically for all mechanical and electrical applications to ensure optimum performance and service longevity.
Portland base mortar is used to secure the hardware to the porcelain body using a proven system that transfers the load uniformly from the hardware into the porcelain body.
Specification:
ANSI CLASS (C29.9) : TR-231
Leakage distance : 37″
Cantilever strength, upright : 4000
Cantilever strength, underhung : 4000
Tensile strength : 25000
Torsion strength, inch-pounds : 20000
Compression strength : 30000
Typical application voltage : 34.5
Impulse flashover, positive : 225
Low frequency withstand, 10 sec. wet : 80
Impulse withstand : 200
Low frequency test voltage, RMS to ground, kV : 22
Maximum RIV at 1,000 kHz, μν : 100
Sheds : 8
Note 1 : ANSI 70 gray is standard. Brown available by request.
Note 2 : Insulators can be ordered with M12 thread size.
Images are only for References
