| Customization: | Available |
|---|---|
| Application: | High-voltage |
| Material: | FRP/GRP |
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The insulators are made of high quality aluminous porcelain meeting the requirements of c130 in accordance with the iec: 60672. apart from the visual and dimensional checks, the long rod insulator shells are subjected to ultrasonic tests prior to assembly. precision machines are used to cut and grind the end faces to achieve the required surface finish and chamfer of the ends.
the metal caps of spheroidal graphite iron are manufactured in-house eliminating the dependency on external suppliers and thereby ensure further consistency in quality and delivery. they are galvanized using zinc of 99.95 % purity with a minimum average coating thickness not less than 85 microns (610 g/m2).
the inner portion of the caps are coated with a uniform layer of bituminous paint to offset the effect of differential thermal expansion between cement and metal parts. the insulators are assembled using high quality portland cement in specialized carousels that ensure the stringent dimensional requirements are met. they are subjected to curing under controlled conditions.
Technical datas:
| Height | 305mm |
| Diameter | 120mm |
| Creepage distance | 500mm |
| Dry lightning impulse withstand voltage | 125kv |
| Power frequency wet withstand voltage | 50kv |
| Routine tensile load | 10kn |
| Tension load | 3.5kn |
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