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 (device routine test) AC 4.2 kV, 50 Hz, 1 s
Voltage test (type test) AC 6.5 kV, 50 Hz, 1 min (higher values upon special
request)
Surge immunity test (type testing), all circuits 8 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
NOTE
For the insulation tests of the generator according to IEC60034-1 or IEEE421.3, the device has to be discon-
nected from the generator if the applied voltage is higher than the values shown here.
EMC Immunity Tests (Type Tests, Test under Mounting Conditions)
See 1.6.4 EMC Immunity Tests (Type Tests, Test under Mounting Conditions) for 7XR81.
2.5
2.5.1
2.5.2
2.5.3
2.5.4
7XR8004 – Resistor Coupling Unit for 7XT71
2.5 Electrical Tests
SIPROTEC, Coupling Units for Generator Protection, Manual 33
C53000-H5040-C072-1, Edition 09.2018
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