Bernecker + Rainer 5PC820.SX01-00, User Manual

Page: 221 / 318

Standards and certifications • Safety
Sect
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certi
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221 Automation PC 820 User's Manual V 1.20
7. Safety
7.1 Ground resistance
Safety Test carried out according to Limits according to
Ground resistance EN 61131-2 EN 60204-1: Electrical equipment of machines
EN 61131-2: Programmable logic controllers
Insulation resistance EN 60204-1: Electrical equipment of machines
High voltage EN 60060-1 EN 61131-2: Programmable logic controllers
UL 508: Industrial control equipment
Residual voltage EN 61131-2 EN 60204-1: Electrical equipment of machines
EN 61131-2: Programmable logic controllers
Leakage current VDE 0701-1: Service, changes and testing of electrical devices
Overload UL 508 EN 61131-2: Programmable logic controllers
UL 508: Industrial control equipment
Simulation component defect UL 508 EN 61131-2: Programmable logic controllers
UL 508: Industrial control equipment
Voltage range EN 61131-2: Programmable logic controllers
Table 166: Overview of limits and testing guidelines for safety
Test carried out according to
EN 61131-2 Limits according to
EN 60204-1
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
Ω
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 167: Test requirements - Ground resistance