Signal Levels and Burdens
Nominal Signal Voltage
5 V 12 V 24 V
V
IHigh
6.0 V 15.8 V 31 V
V
ILow
1.0 V at Ι
ILow
= 0.25 mA 1.4 V at Ι
ILow
= 0.25 mA 1.9 V at Ι
ILow
= 0.25 mA
Ι
IHigh
4.5 mA to 9.4 mA 4.5 mA to 9.3 mA 4.5 mA to 8.7 mA
R
I
890 Ω at V
I
= 4 V 1930 Ω at V
I
= 8.7 V 3780 Ω at V
I
= 17 V
640 Ω at V
I
= 6 V 1700 Ω at V
I
= 15.8 V 3560 Ω at V
I
= 31 V
Electrical Tests
Regulations
Standards: IEC 60255 (product standards)
IEEE C37.90.0; C37.90.1
UL 508
VDE 0435
see also standards for individual tests
Isolation Test
Standards:
IEC 60255-5 and IEC 60870-2-1
High voltage test (routine test)
all circuits except power supply, binary inputs, and
communication / time sync. interfaces
2.5 kV (rms), 50 Hz
High voltage test (routine test)
auxiliary voltage and binary inputs
DC 3.5 kV
High voltage test (routine test)
only isolated communication and time synchronisa-
tion interfaces and
time synchronisation interfaces
500 V (rms), 50 Hz
Impulse voltage test (type test)
all circuits except communications / time sync. inter-
faces, class III
5 kV (peak), 1.2 μs/50 μs, 0.5 J, 3 positive and 3 nega-
tive impulses in intervals of 5 s
EMC Tests for the Interference Immunity (type test)
Standards:
IEC 60255-26, (product standards)
EN 61000-6-2 (generic standard)
VDE 0435 Teil 301, DIN VDE 0435-110
High frequency test
IEC 60255-22-1, Class III und
IEC 61000-4-18
VDE 0435 Teil 303, Class III
2.5 kV (peak); 1 MHz; = 15 μs; 400 surges per s; test duration
2 s; R
i
= 200 Ω
Electrostatic discharge
IEC 60255-22-2, Class IV and
IEC 61000-4-2, Class IV
8 kV contact discharge;
15 kV air discharge; both polarities;
150 pF; R
i
= 330 Ω
Irradiation with HF field, frequency sweep
IEC 60255-22-3,
IEC 61000-4-3
20 V/m; 80 MHz to 1000 MHz;
10 V/m; 1.4 GHz to 2.7 GHz;
80 % AM; 1 kHz
4.1.6
Technical Data
4.1 General
SIPROTEC 4, 7UT6x, Manual 403
C53000-G1176-C230-5, Edition 09.2016
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