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Post insulators – 11kv & 22kv

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

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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