ANSI standard brown glazed 57-5 high voltage line post porcelain insulator
Descriptions:
| ANSI CLASS | Creepage distance (mm) | Dry arcing distance (mm) | cantilever strength (kN) | Lower frequency flashover voltage | Critical impulse flashover voltage | Test voltage to ground (kV) | |
| Dry(kV) | Wet(kV) | Positive(kV) | |||||
| 57-5 | 1145 | 438 | 12.5 | 160 | 130 | 265 | 44 |
1. Line post insulators shall conform in all respects to the requirements of ANSI standard.
2. The insulators shall be made of good commercial-grade wet-process porcelain.The entire surface of the insulator, with the exception of a firing surface, shall be glazed.If gray is required, it shall be in accordance with ANSI Z55.1-1967 (R1973).
3. Metal parts shall be made of a good commercial grade of malleable iron, ductile iron, steel, or
aluminum. Ferrous parts, other than stainless steel, shall be galvanized in accordance with ASTM A153.
Applications:
Post line ceramic insulator for high voltage overhead line transmission.
Competitive advantages:
1) Small size, light weight, easy to transport and install.
2) High mechanical strength, reliable structure, stable performance.
3) Excellent electrical performance and good stain resistance.
4) Good anti-brittle performance, shock-proof platform, no brittle failure.
5) Exchangeable, interchangeable with ceramic insulators.
Our products are sold all over the world, you can rest assured.
