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4.2
Protection Interfaces and Connections
Differential Protection
Number of devices for one protected object (=number of ends delimited by the current trans-
former)
Protection Interfaces
Connection optical fiber
Connection electrical
Connection modules for protection data interface, depending on the order variant:
Optical protection data interface:
Maximum distance monomode fiber
Maximum distance multimode fiber
Protocol
Connector type
Maximum baudrate
Transmission rate
Receiver sensitivity (maximum)
Optical wavelength
Optical budget
Laser Class 1 according to EN 60825-1/-2
Range
1)
When using multimode fiber, a monomode patch cable is used on the sending side; a multimode patch
cable is used on the receiving side (mode conditioning patch cable).
Electrical protection data interface:
Maximum distance
Maximum transmission rate
Telecommunication cable or communication cable
Cable attenuation
Ranges determined during tests
Mode
Telephone wire A-2Y(L)2Y 20x2x0.8 twisted, fully screened
01
02
03
04
05
06
Signal line A-2Y2YB2Y 20x1x1.4 PE insulation material, single wires not twisted, fully screened
01
02
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
1)
1)
Transmission rate
maximum range [km] Attenuation [db]
[kbit/s]
64
20
128
18
64
20
128
20
128
16
128
14
64
6
128
6
4.2 Protection Interfaces and Connections
Port "A"
Voltage terminal "D1" and "D2"
24 km (14.91 miles)
4 km (2.49 miles)
Full duplex
Duplex-LC-Stecker, SFF (IEC 61754-20 Standard)
512 kBit/s
min. -15 dBm
avg
max. -8 dBm
avg
-31 dBm
avg
1310 nm
16.0 dB
Using monomode fiber 9 µm/125 µm
You should assume a path attenuation of 0.5 dB/km
(0.8 dB/miles) for monomode and multimode fiber.
For multimode fiber you must additionally take the
product of the bandwidth lengths into consideration.
16 km (9.94 miles) (for AWG 19 / 0.65 mm
128 kBit/s
twin-wire, e.g. A-2Y(L)2Y-Kabel
< 40 dB (for 80 kHz)
42
42
39
42
33
28
10
13
Technical Data
2
2
)
Signal noise ratio
(SNR) [db]
12
11
7
6
9
6
36
21
259
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