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Composite Post Insulator

System Voltage: From 10kV – 400 kV

Outer insulating material: high temperature vulcanized silicone rubber

Solid insulating core: epoxy reinforced fiberglass.

Flange: the fiberglass core is fitted onto.

Standards: IEC 62231

* Advise Model No or supply drawing when enquire;

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Introduction

The mechanical strength for post insulator

◆Compression strength ◆Torsion strength ◆Tensile strength ◆Cantilever strength

Application for composite post insulator:

Composite post insulator like most of composite insulators consists of a cylindrical solid insulating core made of resin impregnated fibers which bearing the mechanical load. Polymer post insulator core is protected by outer housing made of silicone rubber. The load is being transmitted to the fibre glass core by metal end fittings. Composite post insulator can be used for substation, switchgear and electrical apparatus.

Technical Index

Typical line voltage	Section length	Arcing distance	Creepage distance	Specified cantilever	Lightning impulse flashover voltage		Power frequency flashover voltage
(kv)	(mm)	(mm)	(mm)	load (kn)	Pos	Neg	Dry	Wet
66	900	700	1913	11.5	435	415	265	235
66	808	608	1645	12.5	380	360	230	205
132	2157	1943	6189	14	1190	1220	645	580
132	2009	1795	5691	14.5	1100	1125	595	535
132	1861	1647	5193	15	1010	1030	545	490
132	1713	1499	4695	16.5	920	935	495	445
132	1565	1351	4197	17	830	840	445	400
220	2749	2535	8181	12	1550	1600	845	760
220	2601	2387	7683	12.5	1460	1505	795	715
220	2453	2239	7185	13	1370	1410	745	670
220	2305	2091	6687	13.5	1280	1315	695	625

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