Elster EK280 - 3 Technical data; 3.1 General data; 3.2 Power supply for EK280 without integrated power supply unit

20 Technical data
3 Technical data
3.1 General data
Data
Value
Unit
Width (incl. cable glands)
230
mm
Height (incl. cable glands)
180
mm
Depth
115
mm
Permissible ambient temperature range
-25 ... +55
°C
Permissible gas temperature range
-30 ... +60
°C
3.2 Power supply for EK280 without integrated power supply unit
3.2.1 Battery power supply for the basic device
Data
Value
Unit
Voltage
3.6
V
General nominal capacity
16.5
Ah
Usable capacity
13.0
Ah
Minimum number of batteries required
2
units
Minimum operating life (at standard measure-
ment conditions)
5
years
The standard measurement conditions are defined as follows:
Data
Value
Measurement cycle
30 seconds
Mode input 1
Pulse input
Display active
60 minutes per month
Interface or modem active
30 minutes per month
Ambient temperature
-10 ... +50°C
3.2.2 Battery power supply for the integrated modem
Data
Value
Unit
Voltage
3.9
V
General nominal capacity
16.0
Ah