ABB RELION 615 Series Product Manual page 32

Transformer Protection and Control
RET615
Product version: 5.0 FP1
Table 20. Degree of protection of flush-mounted protection relay
Description
Front side
Rear side, connection terminals
Table 21. 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 relays with an LC communication interface the maximum operating temperature is +70 ºC
32
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 M
ABB