ABB REQ650 - Calculating Settings for Breaker Failure Protection

Table 18. Environmental tests
Description Type test value Reference
Cold tests operation
storage
96 h at -25ºC
16 h at -40ºC
96 h at -40ºC
IEC 60068-2-1/ANSI C37.90-2005
(chapter 4)
Dry heat tests operation
storage
16 h at +70ºC
96 h at +85ºC
IEC 60068-2-2/ANSI C37.90-2005
(chapter 4)
Damp heat tests steady state
cyclic
240 h at +40ºC
humidity 93%
6 cycles at +25 to +55ºC
humidity 93...95%
IEC 60068-2-78
IEC 60068-2-30
Breaker protection REQ650 1MRK 505 283-BEN -
Product version: 1.2
58 ABB