Electrical Tests
Standards
IEC 60255 (product standard)
Additional standards are listed for the individual tests.
Installation Requirements
Overvoltage category
III
Degree of pollution
2
Protection class
1
Insulation and Safety Tests
Standards
IEC 60255-27
Voltage test (routine test)
AC 3.5 kV, 50 Hz, 1 min
Surge immunity test (type testing), all circuits
6 kV (peak value), 1.2 µs/50 µs, 0.5 J
3 positive and 3 negative impulses at intervals of 1 s
Insulation resistance
> 100 MΩ @ DC 500 V
Resistor of protective equal-potential-bonding
< 0.1 Ω @ DC 12 V, 30 A after 1 min
EMC Immunity Tests (Type Tests, Test under Mounting Conditions)
1.6.4 EMC Immunity Tests (Type Tests, Test under Mounting Conditions)
for 7XR81.
3.5
3.5.1
3.5.2
3.5.3
3.5.4
7XR86 Voltage Divider (5:1, 5:2)
3.5 Electrical Tests
42
SIPROTEC, Coupling Units for Generator Protection, Manual
C53000-H5040-C072-1, Edition 09.2018
