Table 18. IRIG-B
Description Value
IRIG time code format
B004, B005
1)
Isolation 500V 1 min.
Modulation Unmodulated
Logic level TTL Level
Current consumption 2...4 mA
Power consumption 10...20 mW
1) According to 200-04 IRIG -standard
Table 19. Lens sensor and optical fibre for arc protection
Description Value
Fibre-optic cable including lens 1.5 m, 3.0 m or 5.0 m
Normal service temperature range of the lens -40...+100°C
Maximum service temperature range of the lens, max 1 h +140°C
Minimum permissible bending radius of the connection fibre 100 mm
Table 20. Degree of protection of flush-mounted IED
Description
Value
Front side IP 54
Table 21. Environmental conditions
Description
Value
Operating temperature range -25...+55ºC (continuous)
Short-time service temperature range
-40...+85ºC (<16h)
1)2)
Relative humidity <93%, non-condensing
Atmospheric pressure 86...106 kPa
Altitude Up to 2000 m
Transport and storage temperature range -40...+85ºC
1) Degradation in MTBF and HMI performance outside the temperature range of -25...+55 ºC
2) For IEDs with an LC communication interface the maximum operating temperature is +70 ºC
Transformer Protection and Control 1MRS757846 A
RET620
Product version: 2.0
22 ABB
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