Safety IEC 62040-1:2017, Edition 2.0, Uninterruptible power systems (UPS) – Part 1: Safety requirements
IEC 62040-1: 2008-6, 1st edition, Uninterruptible Power Systems (UPS) – Part 1: General and safety requirements for UPS
IEC 62040-1:2013-01, 1st edition amendment 1
Pollution degree 2
Overvoltage category III
Earthing system TN-S, TN-C, TT, or IT
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