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.
|Published (Last):||27 November 2009|
|PDF File Size:||16.79 Mb|
|ePub File Size:||6.29 Mb|
|Price:||Free* [*Free Regsitration Required]|
IEC 62128-1 Ed. 2.0 b(2013)
The lack of an intentional connection between the tracks and earth allows voltage differences to occur along the irc, and between the rails and nearby structures.
It also applies to all aspects of fixed installations that are necessary to ensure electrical safety during maintenance work within electric traction systems. If you need help with the purchase or have any queries please 62128- enquiries standards. Sitras REC diode rectifiers Download brochure. Sitras MDC modular digital controller Download brochure.
IEC | IEC Webstore | LVDC
Turnkey Rail Solutions Integrated, reliable and sustainable rail systems. Sitras LCU local charging 6128-1 Download brochure. 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.
A secure power supply for your contact lines: If an earth fault occurs broken catenary ief 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. As a DC protection unit, 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.
We provide all the services you need from a single source, creating valuable synergies in the process 6218-1 giving you unique opportunities to save costs. Follow these links to find other Standards similar uec the one you are viewing.
The purpose of this isolation is to prevent stray dc currents from flowing through the earth and potentially causing corrosion of nearby metallic infrastructure. 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. Ied formation of stray currents is also minimized by automatically opening the short-circuiting device.
It is designed to cover every economic sector and virtually every activity of the humankind where technical standards may be used. Since the shells of rail vehicles are typically at oec same voltage as the wheels and rails, this isc difference could be impressed on a passenger entering or exiting a train from a grounded platform.
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. 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 special demands of these rail services are met by air-cooled disc-type diodes with a high blocking voltage. Medium-voltage switchgear Reliable operation Distribute energy feeds efficiently and connect them reliably with the rectifier group, regardless 62182-1 whether you select a gas or air-insulated indoor installation. Or they could be 622128-1 on a person walking along the tracks. The maximum permissible voltage levels will be explained and compared. Stell, R W Benjamin Conference: Standard oil-insulated or industry-proven cast-resin transformers are used that also fulfill special requirements for fire protection and ie.
The system and its components. Sitras REC type rectifiers are designed to supply traction power to DC-operated mass transit systems and main-line railways. It is important to us that you purchase the right document. 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.
Benefit from our decades of experience in engineering, construction, and commissioning of DC traction power supply systems. Europe ; United States Subject Areas: Rail systems must do one thing above all: Protective provisions against electric shock This document has been re-assessed by the committee, and judged to still be up to date.
Nov 9 3: 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. Please note that there might be constraints on site display and usability. We provide all the services you need from a single source, giving you unique opportunities to save.
Sitras SCD-C reduces excessively high voltage by reliably short-circuiting the return circuit and structure ground temporarily. Sitras SCD-C compact 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.
The isolation of the tracks from the earth is not perfect.
SCD-C compact short-circuiting device Download brochure. This standard applies to all new lines and to all major revisions to existing lines.