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6.7
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
Degree of pollution
Protection class
Voltage-Immunity and Safety Tests
Standards
Voltage test (routine test), current measurement inputs, voltage meas-
urement inputs, relay outputs
Voltage test (routine test),
Auxiliary voltage, binary inputs
Voltage test (routine test), only isolated communication and time-
synchronization interfaces and analog inputs (module position E, F, M,
N, and P)
Surge immunity test (type testing), all circuits except communication
and time-synchronization interfaces and analog inputs, class III
Insulation resistance
Resistor of protective-equipotential-bonding
Insulation of LPIT Digital Input (via Module IO240)
Insulation (All Inputs)
Configuration
Test levels (type test)
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-J, Edition 08.2020
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.
AC 3250 V, 50 Hz, 1 min
6000 V 1.2/50 µs peak impulse
Technical Data
6.7 Electrical Tests
III
2
1
IEC 60255-27
AC 2.5 kV
50 Hz
DC 3.5 kV
DC 700 V
5 kV (peak value)
1.2 µs/50 µs
0.5 J
3 positive and 3 negative impulses
at intervals of 1 s
> 100 MΩ @ DC 500 V
< 0.1 Ω @ DC 12 V, 30 A after
1 min.
235
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