DS DS/EN 61534-21
DS DSEN 61534-21 2006-OCT-31 Powertrack systems -- Part 21 Partcular requrements for powertrack systems ntended for wall and celng mountng
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This clause of Part 1 is applicable with the following addition:
1.1 Add the following paragraph:
This standard specifies the particular requirements and tests for PT systems intended for mounting on walls and/or ceiling. They may be installed flush or semi-flush, surface mounted, suspended or spaced away from the surface using fixing devices.