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Railway applications - Fixed installations - D.C. switchgear Part 2- D.C. circuit breakers. Original standard UNE-EN 50123-2-2004 in PDF full version. Additional info + preview on request

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Railway applications Fixed installations D.C. switchgear Part 3- Indoor d.c. disconnectors, switch-disconnectors and earthing switches. Original standard UNE-EN 50123-3-2004 in PDF full version. Additional info + preview on request

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Amendment 1 - Railway applications - Fixed installations - D.C. switchgear - Part 6- D.C. switchgear assemblies. Original standard UNE-EN 50123-6-2004 A1-2015 in PDF full version. Additional info + preview on request

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Railway applications - Fixed installations - D.C. switchgear Part 7-1- Measurement, control and protection devices for specific use in d.c. traction systems - Application guide. Original standard UNE-EN 50123-7-1-2004 in PDF full version. Additional info + preview on request

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Railway applications - Fixed installations - D.C. switchgear Part 7-2- Measurement, control and protection devices for specific use in d.c. traction systems - Isolating current transducers and other current measuring devices. Original standard UNE-EN 50123-7-2-2004 in PDF full version. Additional info + preview on request

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Railway applications - Fixed installations - D.C. switchgear Part 7-3- Measurement, control and protection devices for specific use in d.c. traction systems - Isolating voltage transducers and other voltage measuring devices. Original standard UNE-EN 50123-7-3-2004 in PDF full version. Additional info + preview on request

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