Purchase your copy of IEC as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available online in. Find the most up-to-date version of IEC at Engineering IEC Edition INTERNATIONAL. STANDARD. NORME. INTERNATIONALE. Railway applications – Fixed installations.
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It protects DC switchgear and contact line systems from critical operating conditions and detects short-circuits during a current rise — even before maximum short-circuit currents are reached.
DC traction power supply system
Equipment intended to detect this condition and connect the substation negative dc bus to the substation grounding grid is gradually being incorporated into modern North American dc traction power substation design. Each track tie and insulated rail fastener assembly can be electrically represented as a resistor of high ohmic value iex between the rails and the earth.
Benefit from our decades of experience in engineering, construction, and commissioning of DC traction power supply systems. Sitras SCD iwc excessively high voltage by reliably short-circuiting the return circuit and structure ground temporarily. For modern dc traction power systems in particular, however, this resistance is high enough for the rails to be considered essentially ungrounded with respect to local electrical ground earth.
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Sitras MDC modular digital controller Download brochure. International Classification for Standards ICS is an international classification system for technical standards. Contact Experience high performance — with the DC traction power supply Benefit from our decades of experience in the engineering, construction, and commissioning of DC traction power supply systems. Voltage-limiting equipment that can be installed in passenger stations and other accessible locations has been developed in response to the requirements of EN The isolation of the tracks from the earth is not perfect.
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A secure power supply for your contact lines: Rectifier group Achieve maximum cost-effectiveness A secure power supply for your contact lines: For the best experience we suggest that you download the eic version of a supported browser: This standard applies to all new lines and to all major revisions to existing lines. For the best experience we suggest that you download the newest version of a supported browser:.
Sitras REC diode rectifiers Download brochure. Standard oil-insulated or industry-proven cast-resin transformers are used that also fulfill special requirements for fire protection and safety. A Review of Current Standards and Codes for Maximum Permissible Rail Voltage Rise on Direct Current Traction Power Systems The negative return portion of a modern direct current dc traction power system, which includes the tracks the running railsis normally isolated from earth to the maximum extent practical.
Modular portfolio DC traction power supply — high-performance, efficient, and safe Reduce costs and save uec using efficient, resilient traction power supply systems.
DC traction power supply – Rail Electrification – Global
Benefit from our decades of experience in the engineering, construction, and commissioning of DC traction power supply systems. It looks like you are using a browser that is not fully iwc. Sitras LCU can be placed at stations or stops or can be integrated into traction substations.
Sitras LCU local charging unit Download brochure. Rail Services Rail systems must do one thing above all: Rectifier transformers for the DC traction supply system Designed especially for highly dynamic rectifier loading, our rectifier transformers have power ratings that range from approximately one MVA for stations supplying trolley cars and trams to approximately seven MVA for operating heavy subways.
Without a low-resistance path back to the substation, there may be a resulting low-level short circuit current flow insufficient to operate the substation protective systems. Sitras SCD-C reduces excessively high voltage by reliably short-circuiting the return circuit and structure ground temporarily. Rail systems must iecc one thing above all: Since the shells of rail vehicles are typically at the same voltage as the wheels and rails, this voltage difference could be impressed on a passenger entering or exiting a train from a grounded platform.
Although we endeavour to maintain an up-to-date catalogue, on occasion we may not have the latest version of a document, including where it has not yet been provided through an international feed. The efficient network control system: