Siemens S5-135U/155U - Manual (Page 122)

4-56
System Manual
C79000-G8576-C199-06
6ES5 955-3NF42 6ES5 955-3NC42
Backup battery
Type
Capacity
No-load voltage
Voltage under load
Storage life
Service life in operation
(see Section 4.3.4 for backup times) Lithium thionyl chloride
5 Ah
3.6 V
3.4 V
approx. 10 years
3 years max.
Rechargeable battery
Type
Capacity
Rated voltage
Service life in operation
(see Section 4.3.4 for backup times)
Protection against exhaustive discharge Nickel cadmium
1.2 Ah
3.6 V
6 years at 40
°
C (104
°
F)
yes
Service life of fans approx. 50.000 h at 40
°
C approx. 50.000 h at 40
°
C
Weight approx. 5.8 kg approx. 5.8 kg
Noise emission 58 dBA 58 dBA
Environmental data See technical specifications of the S5-135U/155U CC
Central Controllers and Expansion Units Power Supply Units