Insulators
ANSI 57-2 Brown Porcelain Line Post | Base-End View
Product Overview
A factory base-end photographic view of the already listed ANSI 57-2 brown porcelain line post, distinct from its existing upright and top-end main views. This is the same model, not a new rating. The dedicated 57-2 drawing specifies 559 mm creepage, 305 ± 5 mm height and 12.5 kN cantilever strength.
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Technical Parameters
| Parameter | Unit | Value |
|---|---|---|
| Colour | Brown-glazed | |
| ANSI class | 57-2 | |
| Overall height | mm | 305 ± 5 |
| Top groove diameter | mm | 73 ± 3 |
| Creepage distance | mm | 559 |
| Cantilever strength | kN | 12.5 |
| Low-frequency dry flashover | kV | 110 |
| Low-frequency wet flashover | kV | 85 |
| Positive critical impulse flashover | kV | 180 |
| Negative critical impulse flashover | kV | 205 |
| RIV test voltage to ground | kV | 22 |
| Maximum RIV at 1000 kHz | µV | 100 |
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