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The main purpose of this standard is to specify the main characteristics of the supply voltages used in traction systems. This includes both AC (Alternating Current) and DC (Direct Current) networks for: Mainline railways Guided mass transit systems (such as subways and metros) Light rail systems (tramways and trolleybuses) Key Technical Parameters Covered You can purchase the standard directly from the IEC Webstore
The global railway sector relies heavily on standardization to ensure safety, interoperability, and efficiency across international borders. One critical standard governing this domain is .
It outlines nominal voltages, maximum voltages, and minimum voltages for both AC and DC systems. Some of these sites may even deliver a
: Annex A provides voltage-time curves that illustrate the maximum allowable voltage values over specific durations to prevent equipment damage. Where to Legally Access IEC 60850
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The standard identifies the standard nominal voltages used worldwide, such as DC 750 V, DC 1.5 kV, DC 3 kV, AC 15 kV (16.7 Hz), and AC 25 kV (50 Hz or 60 Hz).