Electrical Tests
Standards
IEC 60255 (product standard)
IEEE Std C37.90
UL 508
Additional standards are listed for the individual tests.
Installation Requirements
Overvoltage category III
Degree of pollution 2
Protection class 1
Voltage-Immunity and Safety Tests
Standards IEC 60255-27
Voltage test (routine test), current measurement inputs, voltage meas-
urement inputs, relay outputs
AC 2.5 kV
50 Hz
Voltage test (routine test),
Auxiliary voltage, binary inputs
DC 3.5 kV
Voltage test (routine test), only isolated communication and time-
synchronization interfaces and analog inputs (module position E, F, M,
N, and P)
DC 700 V
Surge immunity test (type testing), all circuits except communication
and time-synchronization interfaces and analog inputs, class III
5 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-equipotential-bonding < 0.1 Ω @ DC 12 V, 30 A after
1 min.
Insulation of LPIT Digital Input (via Module IO240)
Insulation (All Inputs)
Configuration Each phase group (current, voltage, and temperature) is insulated from
each other, to PE and to the operator according to the requirements of the
IEC 61869-1 (AC 3 kV, 50 Hz, 1 min) and the IEC 60255-27 for a rated
voltage of 300 V despite the low-level signal voltages.
All channels are protected with differential-mode and common-mode
voltage-limiting devices.
Test levels (type test) AC 3250 V, 50 Hz, 1 min
6000 V 1.2/50 µs peak impulse
6.7
Technical Data
6.7 Electrical Tests
SIPROTEC 5, Hardware Description, Manual 237
C53000-G5040-C002-M, Edition 12.2021
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