3KC0 manual transfer switching equipment
Manual, 09/2018, L1V30368969105-01
131
Appendix
A
A.1
Environmental conditions
IP degree of protection
●
IP20 protection against direct contact of the interfaces when the terminal covers are
mounted correctly and according to regulations
●
IP00 protection without mounted terminal covers
A.2
Operating conditions
A.2.1
Temperature
At a temperature of -25 °C to +70 °C
Correction factor K
t
Temperature
0.9
40 °C … 50 °C
0.8
50 °C … 60 °C
0.7
60 °C … 70 °C
The simplified method of calculating the derating is used here:
l
thu
≤ I
th
x K
f
In a few cases, specific requirements demand precise derating calculations. You can find
further support on the Internet at:
https://www.siemens.com/lowvoltage/technical-support
https://www.siemens.com/lowvoltage/technical-support
A.2.2
Humidity
●
At 80% air humidity and 55 °C, condensation does not take place.
●
At 95% air humidity and 40 °C, condensation does not take place.
Содержание SENTRON 3KC0
Страница 1: ......
Страница 2: ......
Страница 8: ......
Страница 12: ......
Страница 20: ......
Страница 22: ......
Страница 34: ......
Страница 56: ......
Страница 116: ......
Страница 118: ......
Страница 128: ......
Страница 132: ......
Страница 136: ......
Страница 140: ......
Страница 144: ......