Table 1a - Rated Insulation Levels For Rated Voltages of Range I, Series I
Table 1a - Rated Insulation Levels For Rated Voltages of Range I, Series I
Table 1a - Rated Insulation Levels For Rated Voltages of Range I, Series I
The "common values" as used in tables 1a and 1b apply to phase-to-earth, between phases
and across the open switching device, if not otherwise specified in this standard. The withstand
voltage values "across the isolating distance" are valid only for the switching devices where the
clearance between open contacts is designed to meet the safety requirements specified for
disconnectors.
3,6 10 12 20 23
40 46
7,2 20 23 40 46
60 70
12 28 32 60 70
75 85
17,5 38 45 75 85
95 110
24 50 60 95 110
125 145
36 70 80 145 165
170 195