Text version of the page

25kV AC Polymeric Railway Insulators

Mark 1 Insulators - 14025 Mark 1 Insulators

Designed to replace porcelain portalinsulators above and below the gantry,these insulators take some of the highestloads of any insulators in railway service. They can also be used for independent registration where higher mechanicalloads are being specified e.g. in tunnelapplications where large support tubes require small deflection characteristics.Specifically designed to meet therequirements of a maximum workingload of 2.713kNm (528kg), insulators in this range have less than 7mm of deflection at this maximum load and have the lowest bending moment of anycompatible insulator on the railway.Malleable iron end fittings (or aluminiumby request) are fully compatible with existing imperial flanges. High tensile bolts with all-metal self locking nuts andwashers are supplied as applicable.Lightweight (e.g. A686:17kg) and a lowprofile means that they are easy to handle and visually less obtrusive than their porcelain predecessors.Moulded onto high strength GRP rods,these insulators utilise Henley’s unique EPDM dielectric cladding. This highly successful cladding has been proven around the world from deserts to arcticenvironments for more than 30 years.The material has outstanding pollution and weathering performance which, coupled with its non-flammability, also makes it ideal for tunnels and stationswhere natural rain-washing is notpossible. •Network Rail ApprovalNumber PA05/1245T•Network Rail StandardRT/E/S/21082•Direct replacement forporcelain: hollow or solidcores•Less than 7mm deflection atmaximum working loading of528kg •Unique Henley EPDMcladdingmaterial•Lowest profile of anycantilever insulator in its class•Supplied with malleable ironend fittings (aluminium on request)•Light weight (17kg withmalleable iron end fittings)
A subsidiary of TT electronics plc

WT Henley Limited