User manual

UBC10.241, UBC10.241-N1
U–Series
24V, 10A, DC-UPS
May. 2008 / Rev. 1.1 DS-UBC10.241-EN
All parameters are specified at an input voltage of 24V, 10A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
www.pulspower.com Phone [phone] Germany
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10. EFFICIENCY AND POWER LOSSES
Efficiency typ. 97.8% Normal mode, 10A output current, battery fully charged
Power losses typ. 2.9W Normal mode, 0A output current, battery fully charged
typ. 5.5W Normal mode, 10A output current, battery fully charged
typ. 5.0W During battery charging, 0A output current
Fig. 10-1 Efficiency at 24V, typ. Fig. 10-2 Losses at 24V, typ.
Efficiency vs. output
current in normal mode
94.5
39
95.5
96.0
97.0
15A
95.0
96.5
97.5
98%
O
u
t
p
u
t
C
u
r
r
e
n
t
5 7 11 13
Power losses versus output
current in normal mode
0
07.5
2
3
5
15A
1
4
6
7
8W
O
u
t
p
u
t
C
u
r
r
e
n
t
2.5 5 10 12.5
11. FUNCTIONAL DIAGRAM
Fig. 11-1 Functional diagram
DC-UPS Control unit with integrated battery
Battery Charger
&
Tester
Cut-off
Relay
24V
Power
Supply
Input
-
+
Reverse
Polarity
Protection
Input Fuse
&
*
(5) (6)
Ready
Contact
(1) (2)
Buffering
Contact
(3) (4)
Electronic
Current
Limiter
Buffered
Load
+
-
Output
Controller
Diagnosis LED (yellow)
Check Wiring LED (red)
Status LED (green)
Buffer-time Limiter
10s, 30s, 1m, 3m, 10m,
Inhibit -
Inhibit +
Replace
Battery
Contact
Step-up
Converter
(7)
(8)
12V 5Ah battery
+
-
Fuse
*) Return current protection; This feature utilizes a Mosfet instead of a diode in order to minimize the voltage drop and power
losses.