UB10.241

U–Series

24V, 10A, DC-UPS

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

typ.

18.5W

Buffer mode, 10A output current

Fig. 10-1 Efficiency at 24V, typ.

Fig. 10-2 Losses at 24V, typ.

Power losses versus output

current in normal mode

0

07.5

2

3

5

15A

1

4

6

7

8W

Output Current

2.5

5

10

12.5

Efficiency vs. output

current in normal mode

94.5

39

95.5

96.0

97.0

15A

95.0

96.5

97.5

98%

Output Current

5

7

11

13

9/23

Fig. 11-1 Functional diagram

DC-UPS Control Unit

Battery

Charger

Battery

Tester

Cut-off

Relay

Battery

-

12V Battery

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,

End-of-charge Voltage

Inhibit -

Inhibit +

Replace

Battery

Contact

Step-up

Converter

(7)

(8)

*)

Return current protection; This feature utilizes a Mosfet instead of a diode in order to minimize the voltage drop and power

losses.

June. 2010 / Rev. 1.3 DS-UB10.241-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 +49 89 9278 0

Germany