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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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 CSG is a type-tested, metal-enclosed indoor switchgear unit with an integrated diode rectifier.
We recommend that 26128-1 check the website of the publishers of the international document before making a purchase.
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The purpose of this isolation is to prevent stray dc currents from flowing through the earth and potentially causing corrosion of nearby metallic infrastructure. Proven protection for contact lines: Or they could be impressed on a person walking along the tracks.
Rail Automation Optimum, systematic route efficiency. The Sitras REC-W 621128-1 based on the service-proven series of fixed-mounted diode rectifiers using air-cooled disc-type diodes with a high blocking voltage.
Protection Always on the safe side Proven protection for contact lines, future-proof and easy to operate: Rail systems must do one thing above all: 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.
Rolling Stock Cost-effective operation reducing environmental impact, conserving resources — with reliable Rolling Stock. Please note that there might be constraints on site display and usability.
Protective provisions against electric shock This document has been re-assessed by the committee, and judged to still be up to date. 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.
Reduce your voltage with transformers and use rectifiers to convert AC to DC current. The system and iev components. These voltage differences are caused by the flow of current through the running rails back to the substations.
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It also applies to all aspects of fixed installations that are necessary to ensure electrical safety during maintenance work within iev traction systems. These devices quickly connect the running rails to the station structure to eliminate unsafe voltage differences.
IEC 62128-1 Ed. 2.0 b(2013)
Figures; References; Tables; Pagination: Voltage-limiting equipment that can be installed in passenger stations and other accessible locations has been developed in response to the requirements of EN 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.
Contact our experts Talk to us. Distribute energy feeds efficiently and connect them reliably with the rectifier group, regardless of whether you select a gas- or air-insulated indoor installation.
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. Sitras PRO combined protection unit and controller Download brochure. Experience high performance An age of extreme urbanization calls for innovative and flexible mobility concepts.
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. Each track tie and insulated rail fastener assembly can be electrically represented as a resistor of high ohmic value connected between the rails and the earth. Sitras SCD short-circuiting device Download brochure.
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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. Sitras SCD reduces excessively high voltage by reliably short-circuiting the return circuit and structure ground temporarily.
EN includes voltage-time curves that dictate the maximum permissible magnitudes and durations for ac and dc voltages; equipment jec to EN must clamp the highest voltages in no more than 20 milliseconds. 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.
Although we endeavour to maintain an up-to-date 621281, on occasion we may not have the latest version of a document, including where it has not yet been provided through an international feed. These withdrawable diode rectifiers are designed 62218-1 supply traction power to DC-operated rail systems.
Turnkey Rail Solutions Integrated, reliable and sustainable rail systems. Cost-effective operation reducing environmental impact, conserving resources — with reliable Rolling Stock. The special demands of these rail services are met by air-cooled disc-type diodes with a high blocking voltage.