ABB RET615 Product Manual page 20

Transformer Protection and Control
RET615
Product version: 2.0
Table 13. Lens sensor and optical fibre for arc protection
Description
Fibre-optic cable including lens
Normal service temperature range of the lens -40...+100 °C
Maximum service temperature range of the
lens, max 1 h
Minimum permissible bending radius of the
connection fibre
Table 14. Degree of protection of flush-mounted IED
Description
Front side
Rear side, connection terminals
Table 15. Environmental conditions
Description
Operating temperature range
Short-time service temperature range
Relative humidity
Atmospheric pressure
Altitude
Transport and storage temperature range
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
20
Value
1.5 m, 3.0 m or 5.0 m
+140°C
100 mm
Value
IP 54
IP 20
Value
-25...+55ºC (continuous)
1)2)
-40...+85ºC (<16h)
<93%, non-condensing
86...106 kPa
Up to 2000 m
-40...+85ºC
1MRS756891 B
Issued: 01.10.2009
ABB