MV design guide - Schneider Electric
MV design guide - Schneider Electric
MV design guide - Schneider Electric
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Standards<br />
IEC - ANSI comparison<br />
Coordination of rated values<br />
According to IEC<br />
Rated Rated short-circuit Rated operating current<br />
voltage breaking current<br />
Ur (kV) Isc (kA) Ir (A)<br />
3.6 10 400<br />
16 630 1250<br />
25 1250 1600 2500<br />
40 1250 1600 2500 3150<br />
7.2 8 400<br />
12.5 400 630 1250<br />
16 630 1250 1600<br />
25 630 1250 1600 2500<br />
40 1250 1600 2500 3150<br />
12 8 400<br />
12.5 400 630 1250<br />
16 630 1250 1600<br />
25 630 1250 1600 2500<br />
40 1250 1600 2500 3150<br />
50 1250 1600 2500 3150<br />
17.5 8 400 630 1250<br />
12.5 630 1250<br />
16 630 1250<br />
25 1250<br />
40 1250 1600 2500 3150<br />
24 8 400 630 1250<br />
12.5 630 1250<br />
16 630 1250<br />
25 1250 1600 2500<br />
40 1250 1600 2500 3150<br />
36 8 630<br />
12.5 630 1250<br />
16 630 1250 1600<br />
25 1250 1600 2500<br />
40 1250 1600 2500 3150<br />
According to ANSI<br />
Maximum Rated Minimum Rated Rated<br />
rated short-circuit rated short-circuit operating<br />
voltage breaking current voltage breaking current current<br />
at Umax<br />
at Umin<br />
Umax (kV) Isc (kA) (kV) Isc (kA) Ir (A)<br />
4.76 18 3.5 24 1200<br />
29 3.85 36 1200 2000<br />
41 4 49 1200 3000<br />
8.25 7 2.3 25 600 1200 2000<br />
17 4.6 30 1200<br />
33 6.6 41 1200 2000<br />
15 9.3 6.6 21 1200<br />
9.8 4 37 1200<br />
18 11.5 23 1200 2000<br />
19 6.6 43 1200 2000<br />
28 11.5 36 1200 2000<br />
37 11.5 48 1200 3000<br />
15.5 8.9 5.8 24 600<br />
18 12 23 1200<br />
35 12 45 1200<br />
56 12 73 2000 3000 4000<br />
25.8 5.4 12 12 600<br />
11 12 24 1200<br />
38 22 23 36 1200 3000<br />
36 24 57 1200<br />
<strong>Schneider</strong> <strong>Electric</strong><br />
Merlin Gerin <strong>MV</strong> Design Guide<br />
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