ABB RET670 Product Manual page 48

Transformer protection RET670
Customized
Product version: 1.2
Table 24. Environmental tests
Test
Cold test
Storage test
Dry heat test
Damp heat test, steady state
Damp heat test, cyclic
Table 25. CE compliance
Test
Immunity
Emissivity
Low voltage directive
Table 26. Mechanical tests
Test
Vibration response test
Vibration endurance test
Shock response test
Shock withstand test
Bump test
Seismic test
48
Type test value
Test Ad for 16 h at -25°C
Test Ad for 16 h at -40°C
Test Bd for 16 h at +70°C
Test Ca for 4 days at +40 °C and humidity 93%
Test Db for 6 cycles at +25 to +55 °C and
humidity 93 to 95% (1 cycle = 24 hours)
Type test values
Class II
Class I
Class II
Class I
Class I
Class II
1MRK 504 117-BEN D
Reference standard
IEC 60068-2-1
IEC 60068-2-1
IEC 60068-2-2
IEC 60068-2-78
IEC 60068-2-30
According to
EN 50263
EN 50263
EN 50178
Reference standards
IEC 60255-21-1
IEC 60255-21-1
IEC 60255-21-2
IEC 60255-21-2
IEC 60255-21-2
IEC 60255-21-3
ABB