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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EN includes voltage-time curves that dictate the maximum permissible magnitudes and durations for ac and dc voltages; equipment built to EN must clamp isc highest voltages in no more than 20 milliseconds. Benefit from our decades of experience in the engineering, construction, and commissioning of DC traction power supply systems.
Medium-voltage switchgear Reliable operation Distribute energy feeds efficiently and connect them reliably with the rectifier group, regardless of whether you select a gas or air-insulated indoor installation. 62128-11 PRO combined protection unit and controller Download brochure.
These withdrawable diode rectifiers are designed to supply traction power to DC-operated rail systems. Distribute energy feeds efficiently and connect them reliably with the rectifier group, regardless of whether you select a gas- or air-insulated indoor installation.
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. Please use ic Browser It looks like you are using a browser that is not fully supported. The main technical changes with regard to the previous edition are the restructuring of 62128–1 clauses and changes in the touch voltages limits.
If you need help with the purchase or have any queries please email enquiries standards. 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 62128-11 feed.
Sitras REC-W withdrawable diode rectifiers for DC traction power supply These withdrawable diode rectifiers are designed to supply traction power to DC-operated rail systems. Follow these links to find other Standards similar to the one you are viewing. The 62128-11 and its components.
International Classification for Standards ICS is an international classification system for technical standards.
Sitras REC type rectifiers are designed to supply traction power to DC-operated mass transit systems and main-line railways. The isolation of the tracks from the earth is not perfect.
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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 irc entering or exiting a train from a grounded platform. Rectifier group Achieve maximum cost-effectiveness A secure power supply for your contact lines: Recharging occurs during dwell time by an overhead conductor rail. Reduce your voltage with transformers and use rectifiers to convert AC to DC current. The maximum permissible voltage levels will be explained and compared.
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It looks like you are using a browser that is not fully supported. Sitras SCD reduces excessively high voltage by reliably short-circuiting the return circuit and structure ground temporarily. The special demands of these rail services are met by air-cooled disc-type diodes with a high blocking voltage.
Medium-voltage switchgear for the DC traction supply system For our DC substations, we use the same proven standard medium-voltage switchgear used by utilities and industrial plants. Sitras MDC modular digital controller Download brochure. We recommend that you check the website of the publishers of the international document before making a purchase.
Protection Always on the safe side Proven protection for contact lines, future-proof and easy to operate: 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.
Rail Services Rail systems must do one thing above all: Standard oil-insulated or industry-proven cast-resin transformers are used that also fulfill special requirements for fire protection and safety. High-performance DC traction power supply: 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.
It is important to us that you purchase the right document. These devices quickly connect the running rails to the station structure to eliminate unsafe voltage differences. For our DC substations, we use the same proven standard medium-voltage switchgear used by utilities and industrial plants.
DC traction power supply system
62182-1 For the best experience we suggest that you download the newest version of a supported browser:. The Sitras REC-W is based on the service-proven series of fixed-mounted diode rectifiers using air-cooled disc-type diodes with a high blocking voltage. Sitras SCD short-circuiting device for DC traction power supply In DC traction systems, impermissible contact voltage can occur between the return circuit and the structure ground due to operational currents and short-circuit currents.
Proven protection for contact lines: With effective service concepts and innovative technologies Siemens Rail Services ensures the highest reliability and availability of your rail systems. It also applies to all aspects of fixed installations that are necessary to ensure electrical safety during maintenance work within electric traction systems. For the best experience we suggest that you download the newest version of a supported browser: 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.
The efficient network control system: If an earth fault occurs broken catenary conductor falling on the ground, for examplethere may not be a low-resistance circuit back to the substation due to the electrical isolation between running rails and earth ground. These voltage differences are caused by the flow of current through the running rails back to the substations.