B&R Industries Automation PC 620, Руководство пользователя

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371 Automation PC 620 User's Manual V 1.90
7.1 Ground resistance
7.2 Insulation resistance
Test carried out according to
EN 61131-2 Limits according to
EN 60204-1
1)
1) See EN 60204-1:1997 page 62, table 9.
Limits according to
EN 61131-2
Ground resistance: housing (from
any metal part to the ground
terminal) Smallest effective cross section of
the protective ground conductor
for the branch being tested
Maximum measured voltage drop
at a test current of 10 A
Test current 30 A for 2 min,
<
0.1 Ohm
1.0 mm² 3.3 V
1.5 mm² 2.6 V
2.5 mm² 1.9 V
4.0 mm² 1.4 V
>
6.0 mm² 1.0 V
Table 276: Test requirements - ground resistance
Test carried out Limits according to
EN 60204-1
1)
1) See EN 60204-1:1997 page 62, table 9.
Insulation resistance: main circuits
to protective ground conductor
>
1 MOhm at 500 VDC voltage
Table 277: Test requirements - insulation resistance