Enatel DC System Manual
Page
8
of
26
Model: RWxxx
Version: 3.6
The battery temperature is measured by connecting a Temperature Compensation Probe
(available separately) to one of the battery terminals. The rectifier will then automatically
adjust the charging voltage.
The Temperature Compensation Slope is pre-set in the factory but is adjustable from 0.1%
to 0.2% change in charge voltage per degree C.
If the Temperature Compensation Probe is not connected, then the rectifier will assume a
battery temperature of 25°C.
2.6
Current Limit
The rectifier automatically limits the rectifier output current. The maximum output current
is pre-set in the factory but may be adjusted down.
2.7
Output Over Voltage Shut Down
The rectifier will automatically shutdown if the output voltage exceeds the pre-set value.
The Over Voltage Shutdown voltage is pre-set in the factory but may be adjusted.
2.8
Input Over Voltage Shut Down
If the input voltage is outside the specified range, the rectifier may shut down until the
allowed voltage is restored.
2.9
Input Inrush Current Limiter
On start-up, the peak mains inrush current is limited to twice the maximum operating
current. The output voltage and current rise slowly from zero during start-up.
2.10
Over Temperature Shutdown
When the rectifier reaches its maximum operating temperature, the rectifier will
progressively reduce the output current to attempt to reduce the heat within the unit. In
extreme circumstances, the rectifier will totally shutdown.
The maximum operating temperature range is:
Model
Temperature
312U, 324U, 348U
-10 to 65°C
512U, 517U, 624U, 748U
-10 to 50°C
2.11
Reverse Polarity Protection
The rectifier has an internal reverse polarity protection fuse and crowbar diode fitted.
These parts are not user serviceable, and the rectifier will require returning for servicing if
they fail.
2.12
Parallel Rectifier Operation
The rectifiers may be connected in parallel to source more current, or to provide a degree
of redundancy. The rectifiers should have the load share signal connected between the
rectifiers. This is achieved by connecting the load share signal line on the Alarm & Control
