Siemens SIPROTEC 7SD610 - Protection Data Interfaces and Differential Protection Topology

Technical Data
4.2 Protection Data Interfaces and differential protection topology
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
334
4.2 Protection Data Interfaces and differential protection topology
Differential Protection Topology
Protection Data Interfaces
1)
Numeric opening (NA = sin φ (coupling angle)
Number of devices for one protected object
(=number of ends delimited by the current transformer)
2
Number 1
Connection optical fibre Mounting location „D“
For flush mounting housing On the rear side
for surface-mounting case In console housing at device bottom
Connection modules for protection data interface, depending on the order variant:
FO5
FO30 (IEEE C37.94)
Distance, maximum 1.5 km or 0.9 miles
Connector Type ST connector
Optical wavelength λ = 820 nm
Fibre Type Multimode 62.5 μm/125 μm
Transmit output (peak) Min. Type max.
50 μm /125 μm, NA = 0.2
1)
62.5 μm /125 μm, NA = 0.275
1)
-19.8 dBm
-16.0 dBm
-15.8 dBm
-12.0 dBm
-12.8 dBm
-9.0 dBm
Receiver sensitivity (peak)
– Optical power for high level
– Optical power for low level
Max. -40 dBm
Min. -24 dBm
Optical budget min. 4.2 dB for 50 μm /125 μm, NA = 0.2
1)
min. 8 dB for 62.5 μm /125 μm, NA = 0.275
1)
Laser class 1 according to EN 60825-1/-2 Using glass fibre 62.5 μm /125 μm and 50 μm /125 μm
Reach for multimode optical fibre, an optical signal attenuation of 3
dB/km is used for calculating light with a wavelength of λ = 820
nm
Attenuators required no