BES-640T
400 Watt
- +48 VDC input
- Temperature-controlled ball-bearing fan
- Impressive 30 A at 12 V
The 400 W DC PC power supply BES-640T provides a +48 V DC input for powering computer systems applied in automation or telecommunications systems. Due to its widerange input from 36 to 72 V DC the BES-640T remains unaffected by input voltage fluctuations. Thanks to its good performance of 30 A at the +12 V output it is the ideal power supply for high-performance computer systems.
| Technical data |
|
|---|---|
| Input voltage |
+48 VDC (36…72 V) |
| Input current |
13 A max. at 48 VDC |
| Efficiency |
App. 75 % at full load |
| Hold up time |
App. 8 ms at +48 V and full load |
| Power-Good-Signal |
Switch on delay 100…500 ms |
| Protection |
Short circuit protection: Switch off with auto-recovery |
| Safety / EMC |
Designed according to EN 60950, UL 60950 |
| Operating temperature |
0…+50 °C |
| Storage temperature |
-20…+80 °C |
| Operating humidity |
20…85 % RH, non-condensing |
| Dimensions |
150 x 140 x 86 mm ±0.5 mm |
| Weight (net) |
1.65 kg |
| Product-specific data |
|---|
| Max. operating height |
10 000 feet above sea level |
|
Article |
Output |
Output current |
Output current |
Load |
Line |
Cross |
Ripple & |
|---|---|---|---|---|---|---|---|
| BES-640T |
+3.3 V |
0 A |
30 A |
±5 % |
±1 % |
±5 % |
±50 mV |
| +5 V |
2 A |
50 A |
±5 % |
±1 % |
±5 % |
±50 mV |
|
| +12 V |
1 A |
30 A |
±5 % |
±1 % |
±5 % |
±120 mV |
|
| -12 V |
0 A |
1 A |
±8 % |
±1 % |
±5 % |
±120 mV |
|
| -5 V |
0 A |
1 A |
±1 % |
±5 % |
±50 mV |
||
| +5 Vsb |
0 A |
2 A |
±5 % |
±1 % |
±5 % |
±50 mV |
Max. output power is 400 W, combined max. output power at +3.3 V and +5 V is 230 W. The +5 V output can supply up to 30 A if + 12 V / >3 A is connected. From +5 V / 40 A onwards a load of >10 A must be connected at +12 V. The +12 V output can supply up to 30 A if + 5 V / >4 A is connected. Load regulation was done at 60 % of maximum load. Ripple and Noise was measured by a 20 MHz bandwidth limited oscilloscope with connected 10 µF electrolytic capacitor and 100 nF ceramic capacitor at each output.
As a power component this PSU is for assembly purposes only and must not be operated in unassembled condition. The final assembly has to comply with the valid EMC and safety standards.
