DS DS/EN 50091-2/Corr.
DS DSEN 50091-2Corr 1998-APR-01 Unnterruptble power systems UPS - Part 2 EMC requrements
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This EMC Standard applies to single UPS units or UPS systems comprising a number of interconnected UPS and associated control/switchgear forming a single power system, intended to be installed in any operator accessible area or in separated electrical locations, connected to either industrial or public low voltage supply networks.