Räls och rälsdelar

Ämnesområden: Räls och rälsdelar
Kommittébeteckning: SIS/TK 254 (Järnväg, tunnelbana och spårväg)
Källa: ISO
Svarsdatum: den 14 dec 2020
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This document specifies a laboratory test procedure for determining the electrical resistance, in wet conditions, between the running rails provided by a fastening system fitted to a steel or concrete sleeper, bearer or element of ballastless track.

It is also applicable to embedded rail.

This test procedure applies to a complete fastening assembly. It is relevant to signalling currents, not to traction currents.

A reference procedure and an alternative procedure are included.

Ämnesområden: Räls och rälsdelar
Kommittébeteckning: SIS/TK 254 (Järnväg, tunnelbana och spårväg)
Källa: ISO
Svarsdatum: den 14 dec 2020
Se merSe mindre
 

This International Standard specifies the laboratory test procedure for determining the clamping force exerted by the fastening system on the foot of the rail by measuring the force to separate the rail foot from its immediate support. When required, the procedure is also used to determine the uplift stiffness of the fastening system. It is applicable to systems with and without baseplates on all types of sleepers, bearers or elements of ballastless track. The test does not determine the security of the fastening components fixed into the sleeper or other fastening system support.

This test procedure applies to a complete fastening assembly. It is not applicable to fastening systems for embedded rail or other fastening systems which do not act on the foot of the rail.