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TR267-TR288 station post insulatoris an outdoor high voltage post-type apparatus insulators made of wet process porcelain and used in the transmission and distribution of electrical energy which include TR267, TR278, TR286, TR287 and TR288.
Each insulator manufacturers do some insulator tests to ensure the quality of insulator. The designed tests of TR267-TR288 station post insulators have
◆ Low-frequency wet withstand voltage tests
◆ Critical-impulse flashover positive voltage tests
◆ Impulse withstand voltage tests
◆ Radio-influence voltage(RIV) tests
◆ Thermal shock
◆ Compression strength
Doing some post insulators tests for TR267-TR288 station post insulator have some requirements. Three insulators shall be selected at random and tested in accordance with ANCI 29.1. Failure of any insulator to meet the rated insulator technical parameters value; shall constitute failure to meet the requirement of ANSI C29.9.
TR267-TR288 station post insulator main technical parameters:
Type | TR267 | TR278 | TR286 | TR287 | TR288 |
Leakage distance, mm | 1092 | 1892 | 2515 | 2515 | 2946 |
Cantilever strength, KN | 17.8 | 13.3 | 31.1 | 11.6 | 6.23 |
Tension strength, KN | 111.2 | 111.2 | 89 | 111.2 | 89 |
Torsion strength, N.m | 3502 | 7005 | 7005 | 15760 | 7005 |
Compression strength, KN | 266.9 | 266.9 | 266.9 | 333.6 | 267 |
Low frequency test voltage, KV | 30 | 44 | 73 | 73 | 88 |
Critical impulse flashover positive voltage, KV | 280 | 390 | 610 | 610 | 710 |
Low frequency wet withstand voltage, KV | 100 | 145 | 230 | 230 | 275 |
Impulse withstand voltage, KV | 250 | 350 | 550 | 550 | 650 |
Relative Articles:
TR202-TR214 post insulators
TR289-TR308 Station post insulators
TR324-TR369 Post type insulator
TR330-TR373 Porcelain station post insulator
- E-mail: sales@orientinsulators.com
- Tel/Fax: +86 371 86097078
- Whatsapp: 86-13673997131