ABB RET615 Product Manual page 21

ABB
Transformer Protection and Control
RET615
Product version: 2.0
Table 16. Environmental tests
Description
Dry heat test (humidity <50%) • 96 h at +55ºC
Dry cold test
Damp heat test, cyclic
Storage test
1) For IEDs with an LC communication interface the maximum operating temperature is +70
Type test value
• 16 h at +85ºC 1)
• 96 h at -25ºC
• 16 h at -40ºC
• 6 cycles (12 h + 12 h) at
+25°C...+55°C, humidity
>93%
• 96 h at -40ºC
• 96 h at +85ºC
1MRS756891 B
Issued: 01.10.2009
Reference
IEC 60068-2-2
IEC 60068-2-1
IEC 60068-2-30
IEC 60068-2-48
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