YRM2.DIODE

Y-Series

Number of inputs

-

2

Number of outputs

-

1

Input voltage

nom.

DC 24-48V

±25%

The input circuitry must meet the SELV requirements

stipulated by IEC/EN/UL 60950-1.

Input voltage range

-

18-60Vdc

Voltage drop, input to output

typ.

0.78V

at 2x5A, see Fig. 3-1

typ.

0.85V

at 1x10A, see Fig. 3-2

typ.

0.85V

at 2x10A, see Fig. 3-1

Input current

nom.

2x 0-10A

continuous

nom.

1x 0-20A

continuous, see note 1

nom.

2x 10-16A

for up to 5 seconds

Peak input current

max.

150A

for maximal 10ms per input

Output current

nom.

20A

continuous

nom.

20-32A

for up to 5 seconds

max.

25A

at continuous overload or short circuit, see note 2

Reverse current

max.

2mA

per input, -40°C to +60°C

Reverse voltage

max.

200Vdc

voltage applied to the output, continuously allowed

Note 1:

Each input can be loaded up to 20A. At currents above 10A, the other input should not be loaded. It is preferable to parallel the two

inputs in order to minimize the power loss in such cases.

Note 2:

Ensure that the continuous output current does not exceed 25A. Check the short-circuit current of the power sources and if the

power source can deliver more than 25A 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

200mV

400mV

600mV

800mV

1000mV

5A

15A

20A

10A

Output:

2x5A

2x2.5A

Input:

2x10A

2x7.5A

0

0

Input, Output Current

A... 25°C

B... 60°C

A

B

V

A

QS/QT10

24V,10A

+

-

QS/QT10

24V,10A

+

-

V

A

=

Voltage Drop

=

-

Output

A

V

Variable

Load,

0-20A

YR2 / YRM2

Input 1

Input 2

Output

Fig. 3-2 Input to output voltage drop when only one input draws current

Voltage Drop, typ.

0mV

200mV

400mV

600mV

800mV

1000mV

5A

15A

20A

10A

0

Output Current

A... 25°C

B... 60°C

A

B

Voltage Drop

=

-

Not used or

power supply

with lower

voltage

V

A

QS/QT20

24V,20A

+

-

Output

A

V

Variable

Load,

0-20A

Input 1

Input 2

Output

YR2 / YRM2

Apr. 2014 / Rev. 1.4 DS-YRM2.DIODE-EN

All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted

www.pulspower.com Phone +49 89 9278 0

Germany

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