Low-voltage switchgear and controlgear assemblies - Distribution boards intended to be operated by ordinary persons (DBO)What is this standard about? This part of IEC 61439 defines the specific requirements for distribution boards intended to be operated by ordinary persons (DBO). DBOs have the following criteria: intended to be operated by ordinary persons (e. g. switching operations and replacing fuse links), e. g. in domestic (household) applications; outgoing circuits contain protective devices, intended to be operated by ordinary persons, complying e. g. with IEC

inspection site

BS EN ISO 11124‑2:2018 includes some technical changes with respect to BS EN ISO 11124‑2:1997

tension and bending

EN 50121-3-2

a part of the associated equipment serves the purpose of a fuse-base

It does not apply to fan-beam radars [narrow in azimuth (AZ) and broad in elevation (EL)]

and loss of livelihoods

Examples of evaluation of noise-emission data

An overall environmental monitoring programme

Support and simplify access to the public sector procurement process

Radio frequency transmittance

the committee felt that the requirements for dimensioning had been under-represented in the 2011 version of the standard