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OVE EN 50522/A1
Earthing of power installations exceeding 1 kV a.c. (Amendment) (english version)
Edition
2024-02-15
ISO/TS 11665-13
Measurement of radioactivity in the environment - Air: radon 222 - Part 13: Determination of the diffusion coefficient in waterproof materials: membrane two-side activity concentration test method
Edition
2017-10
UNE-EN 50522
Earthing of power installations exceeding 1 kV a.c.
Edition
2012-07-11
UNE-EN 50522
Earthing of power installations exceeding 1 kV a.c.
Edition
2022-11-02
OENORM EN ISO 14644-16
Cleanrooms and associated controlled environments - Part 16: Energy efficiency in cleanrooms and separative devices (ISO 14644-16:2019)
Edition
2020-01-15
NF C13-000-2 ; NF EN 50522:2022-03-04
Earthing of power installations exceeding 1 kV a.c
Edition
2022-03-04
NF C13-000-2 ; NF EN 50522:2012-12-01
Earthing of power installations exceeding 1 kV a.c
Edition
2012-12-01
ISO 16000-36
Indoor air - Part 36: Standard method for assessing the reduction rate of culturable airborne bacteria by air purifiers using a test chamber
Edition
2018-10
ISO 23320
Workplace air - Gases and vapours - Requirements for evaluation of measuring procedures using diffusive samplers
Edition
2022-04
ISO 14644-15
Cleanrooms and associated controlled environments - Part 15: Assessment of suitability for use of equipment and materials by airborne chemical concentration
Edition
2017-10