- Email:sales@orientinsulators.com
- Tel/Fax:86 317-3618888
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- sales@orientinsulators.com
TR289-TR308 Station post insulatorsis a main of solid core insulators, which can be divide into common type and anti-pollution fog type and include TR289, TR291, TR295, TR304 and TR308.
The properties of TR289-TR308 Station post insulators
◆ Made by porcelain materials
◆ Porcelain station post insulator has four contamination levels
◆ Station post insulators are designed with large and small alternative shed
TR289-TR308 Station post insulators can be designed with large and small alternative shed. If there is more spacing between large sheds, the rain cannot easily be bridged, and the bid shed also can protect small shed. This way can greatly improve the electrical performance of the ceramic solid core insulator.
Except ANSI TR289-TR308 Station post insulators, Orient Power also manufacturers ceramic post insulators according to IEC, AS, BS, customers’ drawings and other international standrds.
TR289-TR308 Station post insulators main technical parameters:
Type | TR289 | TR291 | TR295 | TR304 | TR308 |
Leakage distance, mm | 2946 | 3234 | 3234 | 4191 | 4191 |
Cantilever strength, KN | 9.8 | 5.34 | 8.23 | 4.23 | 6.45 |
Tension strength, KN | 111.2 | 89 | 111.2 | 89 | 111.2 |
Torsion strength, N.m | 15760 | 7005 | 15760 | 7005 | 15760 |
Compression strength, KN | 333.6 | 267 | 333.6 | 267 | 333.6 |
Low frequency test voltage, KV | 88 | 103 | 103 | 146 | 146 |
Critical impulse flashover positive voltage, KV | 710 | 810 | 810 | 1010 | 1010 |
Low frequency wet withstand voltage, KV | 275 | 315 | 315 | 385 | 385 |
Impulse withstand voltage, KV | 650 | 750 | 750 | 900 | 900 |
Relative Articles:
TR202-TR214 post insulators
TR267-TR288 station post insulator
TR324-TR369 Post type insulator
TR330-TR373 Porcelain station post insulator
- E-mail: sales@orientinsulators.com
- Tel/Fax: +86 371 86097078
- Whatsapp: 86-13673997131