RSD-300 MEANWELL [Mean Well Enterprises Co., Ltd.], RSD-300 Datasheet - Page 3

• Manufacturer Part Number: RSD-300
• Description: 300W Railway Single Output DC-DC Converter
• Manufacturer: MEANWELL [Mean Well Enterprises Co., Ltd.]

B-12
C-12
To fulfil the requirements of EN50155 TX level, RSD-300 series must be installed onto an iron plate on the bottom.
In order for optimal thermal performance, the iron plate must have an even & smooth surface and RSD-300 series must be firmly mounted at the center of the iron plate, as
shown in the diagram above.
Input Fuse
There is one fuse connected in series to the positive input line, which are used to protect against abnormal surge. Fuse specifications of each model are shown as below.
Input Reverse Polarity Protection
There is a MOSFET connected in series to the negative input line. If the input polarity is connected reversely, the MOSFET opens and there will be no output to protect the unit.
Input Under-voltage Protection
If input voltage drops to Vi
Hold-up Time
D type is in compliance with S2 level, while B and C types are in compliance with S1 level at full load output condition. To fulfil the requirements of S2 level, B and C types require
de-rating their output load to 70%, please refer to the curve diagrams below.
Size of Base Panel
100%
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
90%
80%
70%
60%
50%
40%
30%
20%
10%
Type
0%
0%
B
C
D
Fuse Type
Time-Lag
Time-Lag
Fast
300W Railway Single Output DC-DC Converter
min.
TIME
TIME
-3V, the internal control IC shunts down and there is no output voltage.
Conquer UDA-A, 16A, 250V
Conquer UDA-A, 8A, 250V
Littelfuse 257, 30A, 32V
Reference and Rating
B-24
C-24
100%
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0%
M4*4
TIME
TIME
Unit:mm
B-48
C-48
100%
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0%
R S D - 3 0 0
File Name:RSD-300-SPEC 2012-07-20
TIME
TIME
s e r i e s