YR40.241 Datasheet, PDF (5/17 Pages) PULS GmbH – DUAL REDUNDANCY MODULE

Y-Series
YR40.241
12-28V, 40A, DUAL REDUNDANCY MODULE
4. POWER LOSSES
Power losses
typ.
typ.
typ.
Standby power losses
typ.
typ.
DC 24V
2.15W
6.3W
2.6W
0.35W
0.7W
input: 2x10A
input: 2x20A
input: 1x20A,
(only one input is connected to input voltage)
at no output current,
(only one input is connected to input voltage)
at no output current,
(both inputs are connected to input voltages)
Fig. 4-1 Power losses when both inputs draw equal current
Power Losses, typ.
7W
6.0
5.0
A... 25°C
B... 60°C
4.0
3.0
2.0
1.0
0
0 5 10 15
BA
Output Current
20 25 30 35 40A
QS/QT20
24V,20A
+
e.g.
24.5V
-
I1
A
V _U1
YR40
Input 1
QS/QT20
24V,20A
+
e.g.
24.5V
-
I2
A
V _U2
Input 2
I1 = I2
U1 = U2
Output
Output
IOUT
A
UOUT ^V
Variable
Load,
0-40A
Losses = ( U1* I1 + U2* I2 ) - UOUT* IOUT
Fig. 4-2 Power losses when only one input is used
Power Losses, typ.
4W
3.5
3.0
A... 25°C
B... 60°C
2.5
2.0
1.5
1.0
0.5
0
0 2.5 5 7.5
BA
Output Current
10 12.5 15 17.5 20A
QS/QT20
24V,20A
+
-
I1
A
V _U1
YR40
Input 1
Output
Output
IOUT
A
UOUT ^V
Variable
Load,
0-20A
Input 2
Losses = U1* I1 - UOUT* IOUT
Note: As soon as voltage is applied on input 2, an additional 0.35W will be consumed. It is not relevant, whether this channel contributes
to the output current or not.
Feb. 2014 / Rev. 1.3 DS-YR40.241-EN
All parameters are specified at 24V, 40A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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