IEC 62040-1-1:2002/COR1:2002

IEC 62040-1-1
(First edition – 2002)
Uninterruptible power systems (UPS) –

Part 1-1: General and safety requirements for UPS

used in operator access areas
CORRIGENDUM 1
Page 8
2 Normative references
Replace “IEC 2040-1-2” by “IEC 62040-1-2”.
Page 18
5.1.4 Backfeed protection
Replace, in item b), the second and third sentences by the following:
For example, circuits with voltage less than 150 V r.m.s. require 0,7 mm for basic insulation
and circuits with voltage greater than 150 V r.m.s. but less than 300 V r.m.s. require 1,4 mm
for basic insulation. For a UPS with floating outputs, opening all phases and the neutral
using the required clearance for basic insulation is considered acceptable.
Page 27
7.7 Temperat
...