Published: 07-10-2014 photo #21657 0 comments 0 votes
The Sm5 electric multiple unit (EMU) is a low-floor train used on the Helsinki commuter rail network. The Sm5 units are designed for the Finnish winter conditions. They are fitted with 50-100% thicker thermal insulation compared to previous FLIRT models, and the incoming fresh ventilation air is preheated with the outgoing warm air to recover heat. The entrance areas are fitted with fan heaters in order to preserve the interior climate as passengers enter and leave during cold weather.
05 Oct 2014