Time Synchronisation Interface
Time synchronization DCF77/IRIG B signal (telegram format IRIG-B000)
Connection for flush-mounted housing rear panel, slot “A”;
9-pole D-subminiature female connector
Connection for surface-mounted
housing
At the double-deck terminal on the case bottom
Signal nominal voltages Selectable 5 V, 12 V or 24 V
Test voltage 500 V; 50 Hz
Signal levels and burdens DCF77/IRIG-B:
Nominal Signal Voltage
5 V 12 V 24 V
U
IHigh
6.0 V 15.8 V 31 V
U
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 U
I
= 4 V 1930 Ω at U
I
= 8.7 V 3780 Ω at U
I
= 17 V
640 Ω at U
I
= 6 V 1700 Ω at U
I
= 15.8 V 3560 Ω at U
I
= 31 V
Electrical Tests
Specifications
Standards:
IEC 60255 (product standards))
IEEE Std C37.90.0/.1/.2
VDE 0435
For more standards see also individual functions
Insulation Test
Standards:
IEC 60255-5 and IEC 60870-2-1
High voltage test (routine test)
All circuits except power supply, Binary Inputs, Commu-
nication Interface and Time Synchronization 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 synchronization
interfaces
500 V (rms), 50 Hz
Impulse voltage test (type test)
All Circuits Except Communication and Time Synchroni-
zation Interfaces, Class III
5 kV (peak), 1.2/50 μs, 0.5 Ws, 3 positive and 3 negative
impulses at intervals of 5 s
EMC Tests for Interference Immunity (Type Tests)
Standards:
IEC 60255-6 and -22, (product standards)
EN 61000-6-2 (generic standard)
VDE 0435 part 301DIN VDE 0435-110
High frequency test
IEC 60255-22-1, Class III
and VDE 0435 Teil 303, Class III
2.5 kV (Peak); 1 MHz; τ = 15 μs; 400 surges per s; test duration
2 s; R
i
= 200 Ω
4.1.5
Technical Data
4.1 General
SIPROTEC 4, 7VK61, Manual 231
C53000-G1176-C159-5, Edition 05.2018
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