Specifications
057-231 ISSUE: 2
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2.2 CHARGE FAIL RELAY
Parameter
Specification
Relay Type
Single Pole Change Over Relay. Energises when the battery charger is
operational and no alarms are present. De-energises upon any alarm and
when the AC power is removed from the charger.
Rating
3 A DC.
2.3 OUTPUT SPECIFICATIONS
Parameter
Min
Nom
Max
Comments
Output Voltage DSE9474
(24V DC Battery)
26 V
27 V
29.5 V
Voltage Drop Compensation is
provided when using Voltage Sensing
Wires.
Battery Temperature Compensation is
provided when using PT1000 sensor.
Output Voltage DSE9484
(12V DC Battery)
13 V
13.5 V
14.75 V
Output Charging Current (A)
0 A
30 A
31A
Current limit threshold (A)
15 A
30 A
31 A
Configurable by DSE Configuration
Suite PC Software.
Recovery from current limit
(A)
30 A
31 A
DSE9474 Full load AC input
current (A)
4.2 A
At Vin = 230 V, Vo = 29.5 V, Io = 30 A
DSE9474 Full load AC input
current (A)
9 A
At Vin = 110 V, Vo = 29.5 V, Io = 30 A
DSE9484 Full load AC input
current (A)
2.1 A
At Vin = 230 V, Vo = 14.75 V, Io = 30 A
DSE9484 Full load AC input
current (A)
4.4 A
At Vin = 110 V, Vo = 14.75 V, Io = 30 A
AC Input Inrush (10 ms)
current (A)
65 A
For 10 ms
2.3.1
VOLTAGE DROP COMPENSATION
The battery voltage is monitored by means of the Sensing Wires. These wires carry only a small
sensing current and as such are not affected by the voltage drop experienced by the high current
carrying battery connection wires.
This provides for an accurate reading of the battery voltage and enables the battery charger to
increase output voltage to maintain the correct charging voltage “at the battery terminals” (Maximum
output 29.5 V).
Example:
Float Voltage
configuration of the battery charger = 27.4 V
Charger output = 27.4 V
Battery voltage measured by Sensing Wires = 25 V
The battery charger increases the output voltage until the Sensing Wires measure 27.4 V. The
voltage drop in the charging cables is eliminated.
