PMA AG railway cable conduit protectors

Railway electrical installations, whether in infrastructure or rolling stock, are made up of a vast number of components connected using electrical cable, which is often exposed to severe stresses, whether dynamic, static or environmental. Such stresses unfortunately cause the cables themselves to deteriorate, ultimately resulting in failures (train stoppages) and considerable costs to replace cables and restore correct operation.

The PMA AG corrugated polyamide conduits provide resistance to ageing caused by UV exposure and thermal cycling, and are certified by LAPI meeting the limits for risk category LR4 in accordance with the UNI CEI 11170-3 standard (2005).

Features include: wide operating temperature range (-40 + 105°C); retention of elevated mechanical strength at low temperatures; high resistance to flexural fatigue (more than 4 million cycles for PA12); self-extinguishing with no release of toxic gases; high impact and compressive strength; abrasion resistance; resistance to chemicals and oils; resistance to ageing when exposed to UV radiation; high IP rating - IP66, IP68, IP69K; fire and fume classification in accordance with UNI CEI 11170-3-2.

The IP69K protection rating means that the fitting can be exposed to pressurised jets of fluid (up to 100 bar) without any ingress of fluid into the fittings. The fittings are available in two versions - the first manufactured entirely from polyamide and the second with a metallic thread for more demanding applications.

Other features include: high-strength connection to system, rodent repellent, impossibility of accidental disconnection and possibility of magnetic field shielding. The conduits are supplied with an extensive range of terminations and accessories enabling versatile use under the most varied conditions.