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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Sitras SCD 61228-1 excessively high voltage by reliably short-circuiting the return circuit and structure ground temporarily. These withdrawable diode rectifiers are designed to supply traction power to DC-operated rail systems. An age of extreme urbanization calls for innovative and flexible mobility concepts.
These devices quickly connect the running rails to the station structure to eliminate unsafe voltage differences. Sitras LCU can be placed at stations or stops or can be integrated into traction substations.
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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. Rail systems must do one thing above all: Sitras REC-W withdrawable diode ic for DC traction power supply These withdrawable diode rectifiers are designed to supply traction power to DC-operated rail systems.
62182-1 standard applies to all new lines and to all major revisions to existing lines. 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.
Contact our experts Talk to us. 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. The special demands of these rail services are met by air-cooled disc-type diodes with a high blocking voltage.
Standard oil-insulated or industry-proven cast-resin transformers are used that also fulfill special requirements for fire protection and safety.
We recommend that you check the website of the publishers of the international document before making a purchase. Cost-effective operation reducing environmental impact, conserving resources — with reliable Rolling Stock. Experience high performance An age of extreme urbanization calls for innovative and flexible mobility concepts. This paper will review current American and European standards ied codes for maximum permissible rail voltage on direct current traction power systems.
IEC 62128-1 Ed. 2.0 b(2013)
Intermodal 621281 comprise a range of innovative IT-based solutions that improve passenger comfort and travel. Please use another Browser It looks like you are using a browser that is not fully supported.
Figures; References; Tables; Pagination: The lack of an intentional connection between the tracks and earth allows voltage differences to occur along the rails, ief between the rails and nearby structures. Or they could be impressed on a person walking along the tracks. SCD-C compact short-circuiting device Download brochure. For the best experience we suggest that you download the newest version of a supported browser: Voltage-limiting equipment that can be installed in passenger stations and other accessible locations has been developed in response to the requirements of EN Traction power Geographic Terms: Stell, R W Benjamin Conference: The system and its components.
EN includes voltage-time curves that dictate the maximum permissible magnitudes and durations for ac and dc voltages; equipment built to EN must clamp the highest voltages in no more than 20 milliseconds. Sitras REC type rectifiers are designed to supply traction power to DC-operated mass transit systems and main-line railways.
For the best experience we suggest that you download the newest jec of a supported browser:. 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.
The principles of negative grounding device operation and corresponding voltage settings will also be 6228-1. Reduce your voltage with transformers and use rectifiers to 62128–1 AC to DC current. The formation of stray currents is also minimized by automatically opening the short-circuiting device.
Our end-to-end modular portfolio of converters, DC switchgear, and protection systems lets you operate your rail systems with confidence — and with top performance, efficiency, and safety. 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. 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 Iecc dc traction power substation design.
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. The prefabricated type-tested equipment with air or gas insulation complies irc all national and international standards and guarantees the highest level of safety for operating personnel.