Power Supply PS1000-A6-24.20
Application Notes
20
21
-1
1
43
26.6
Charging of Batteries
The power supply can be used to charge lead-acid or maintenance free batteries.
Two 12V SLA or VRLA batteries are needed in series connection.
Charging Batteries
1.
Set the device into
Parallel Use
mode and adjust the output voltage, measured at no load
and at the battery end of the cable, very precisely to the end-of-charge voltage,
see table below.
2.
Use only matched batteries when putting 12V types in series.
3.
Ensure that the ambient temperature of the power supply stays below +40°C.
4.
Use a 32A or 30A circuit breaker (or blocking diode) between the power supply and the battery.
5.
Ensure that the output current of the power supply is below the allowed charging current
of the battery.
6.
The return current to the power supply (battery discharge current) is typ. 3.5mA
when the power supply is switched off (except in case a blocking diode is utilized).
26.7
Two Phases Operation
The power supply can also be used on two-phases of a three-phase-system.
Such a phase-to-phase connection is allowed as long as the supplying voltage
is below 240V
+10%
.
Ensure that the wire, which is connected to the N-terminal, is appropriately fused.
The maximum allowed voltage between a Phase and the PE must be below 300Vac.
Figure 26.9 Two phases operation
End-of-charge voltage
27.8V
27.5V
27.15V
26.8V
Battery temperature
10°C
20°C
30°C
40°C
