Datasheet
YR80.241
Y-Series
24-28V, 80A, DUAL REDUNDANCY MODULE
3. INPUT AND OUTPUT CHARACTERISTICS
Number of inputs - 2
Number of outputs - 1
Input voltage nom. DC 24-28V ±30%
The input circuitry must meet the SELV requirements
stipulated by IEC/EN/UL 60950-1.
Input voltage range - 16.8–36.4Vdc
Voltage drop, input to output typ. 95mV at 2x40A, see Fig. 3-1
typ. 49mV at 2x20A, see Fig. 3-1
typ. 81mV at 1x40A, see Fig. 3-2
Input current nom. 2x 0–40A continuous
nom. 2x 40–65A for 5 seconds
max 2x 65A at continuous overload or short circuit
Peak input current max. 1500A for max. 1ms per input
Output current nom. 80A continuous
nom. 80–130A for 5 seconds
max.
130A at continuous overload or short circuit
Reverse current max. 1mA at 24V, per input, -40°C to +70°C
Reverse voltage max. 40Vdc voltage applied to the output, continuously allowed
Output capacitance typ. 320μF
Note: Ensure that the continuous output current does not exceed 130A. Check the short-circuit current of the power sources and if the
power source can deliver more than 130A together, use an appropriate fuse on the output.
Fig. 3-1 Input to output voltage drop when both inputs draw current
(typical 1+1 redundant case, when the output voltages of the two units are equal or set into “parallel use” mode)
Voltage Drop, typ
0mV
20A 60A
20mV
40mV
60mV
80mV
100mV
120mV
80A40A
Output:
A
.
.
.
2
5
°
C
B
.
.
.
6
0
°
C
4/17
2x20A2x10A
Input / Output Current
Input:
2x40A2x30A0
0
A
B
V
A
QT40
24V,40A
+
-
"Parallel
Use"
QT40
24V,40A
+
-
"Parallel
Use"
V
A
I
1
I
2
U
1
U
2
Output
I
1
I
2
=
U
2
U
1
= Voltage Drop
U
1
=
U
OUT
-
A
V
I
OUT
U
OUT
Variable
Load,
0-80A
YR80
Input 1
Input 2
Output
Fig. 3-2 Input to output voltage drop when only one input draws current
Voltage Drop, typ.
0mV
10A 30A
20mV
40mV
60mV
80mV
100mV
120mV
A
.
.
.
2
5
°
C
B
.
.
.
6
0
°
C
20A 40A
Output Current
0
A
B
Voltage Drop
U
1
=
U
OUT
-
Not used or
power supply
with lower
voltage
V
A
QT40
24V,40A
+
-
I
1
U
1
Output
A
V
I
OUT
U
OUT
Variable
Load,
0-40A
YR80
Input 1
Input 2
Output
Oct. 2010 / Rev. 1.0 DS-YR80.241-EN
All parameters are specified at 24V, 80A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
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