Post insulators can be divided into line post insulators and station post insulators used in power overhead lines and substations. Post insulators – 11kv & 22kv is one of medium voltage insulators.
Post insulators – 11kv & 22kv drawings
Post insulators – 11kv & 22kv specifications
| NO. | unit | HC-PS1102 | HC-PS 2202 | |
| Highest system voltage | KV | 12 | 24 | |
| Working voltage | KV | 11 | 22 | |
| Creepage distance minimum | mm | 300 | 430 | |
| Cantilever strength | Upright | N | 5500 | 9000 |
| underhand | N | 3250 | 6800 | |
| Torsional strength | Nm | 30 | 68 | |
| Compressive strength | N | 32000 | 4000 | |
| Tensile strength | N | 1800 | 3000 | |
| Power frequency wet withstand voltage | KV | 38 | 55 | |
| Power frequency dry withstand voltage | KV | 60 | 70 | |
| Power frequency wet flashover voltage | KV | 55 | 60 | |
| Power frequency dry flashover voltage | KV | 70 | 80 | |
| Impulse withstand voltage | KVp | 75 | 125 | |
| Power frequency Puncture voltage | KV | 1.3 x Actual F/O Voltage | 1.3 x Actual F/O Voltage | |
| Net weight (approx.) | kg | 4.9 | 7.5 | |
Post insulators – 11kv & 22kv are manufactured and designed in accordance with IS:2544 & IS 5350, IEC:168& BS-3297 and ANSI C29.8 specifications or customers’ requirements.
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