ABB RET615 Product Manual page 29

ABB
Transformer Protection and Control
RET615
Product version: 4.0
Table 16. Station communication link, fibre-optic
Connector
Fibre type
LC MM 62.5/125 or 50/125
μm glass fibre core
ST MM 62.5/125 or 50/125
μm glass fibre core
1) (MM) multi-mode fibre, (SM) single-mode fibre
2) Maximum allowed attenuation caused by connectors and cable together
Table 17. IRIG-B
Description
IRIG time code format
Isolation
Modulation
Logic level
Current consumption
Power consumption
1) According to 200-04 IRIG -standard
Table 18. Lens sensor and optical fibre for arc protection
Description
Fibre-optic cable including lens
Normal service temperature range of the lens
Maximum service temperature range of the lens, max 1 h
Minimum permissible bending radius of the connection
fibre
Table 19. Degree of protection of flush-mounted IED
Description
Front side
Rear side, connection terminals
1) Wave length
1300 nm
820-900 nm
Max. distance
Permitted path attenuation
2 km <8 dB
1 km <11 dB
Value
1)
B004, B005
500V 1 min.
Unmodulated
TTL Level
2...4 mA
10...20 mW
Value
1.5 m, 3.0 m or 5.0 m
-40...+100°C
+140°C
100 mm
Value
IP 54
IP 20
1MRS756891 F
2)
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