The railway system is handling increased passenger and freight volumes, which is why maintenance work increasingly has to be carried out at night. As a result, the issue of noise emissions from machines is becoming more important.
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electric = efficient = quiet
When it comes to noise reduction, Plasser & Theurer's E³ machines score highly thanks to their focus on electric drives and power packs. This increases efficiency, reduces CO₂ emissions, and the machines also work much more quietly.
When measured on a Unimat 09/4S E³, for example, the electric power wagon is 13 dB(A) quieter than a comparable diesel-hydraulic wagon. The electrically powered tamping unit is quieter by 20 dB(A), with only 62 dB(A) measured in idle mode, which corresponds to the volume of a conversation in an office.
Low noise levels: no hearing protection required
The first battery-powered HTW 100 E³ catenary installation machine was already quieter by 20 dB(A) than its diesel-electric counterpart, and it never exceeded the 80 dB(A) in working mode, above which hearing protection is required by law.
The Plasser CatenaryCrafter and MultiCrafter are particularly quiet: running and working is emission-free and power is supplied via the overhead contact line and battery.
