Guangzhou Kaihui Electronics Co., Ltd. is one of the leading manufacturers and suppliers of small 48v 750w dc psu in China. With abundant experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for customized service.
Stage lights power supply DC48V 750W SMPS
| Output voltage | +48VDC |
| Rated current | 15.6A |
| Rated power | 748.8W |
| Ripple &noise | 500mVp-p |
| Output adjustable range | ±5% |
| Output accuracy | ±1.5 % |
| Input voltage range | 90V~264V AC |
| Input Current | 9.5A max |
| Frequency Range | 50~60Hz |
| Efficiency | 93%@230Vac |
| Overload protection | 115~150% load,Hiccup protection, automatic recovery |
| Output short circuit protection | Lock protection, restored after restart |
| Output over voltage protection | 120~150% Volt,Lock protection, restored after restart |
| Over temperature protection | TS1＞105℃,shutdown Auto recovery |
| Working temp.,humidity | -30~60℃,10~90% RH,No condensation |
| Storage temp.,humidity | -30~85℃,10~95% RH |
| Temperature Coefficient | ±0.3%/℃(0~50℃) |
| Safety standards | GB4943, EN60950-1,EN62368-1 |
| Withstand voltage | I/P-O/P:3KV; I/P-FG：1.8KV;O/P-FG:0.6KV AC 1min |
|
EMC standards |
EN55015 Class B ,EN61000-3-2 Class C. EN61000-3-3, EN 55024;EN 61000-4-2, Performance Criteria B, EN 61000-4-5, Performance Criteria C |
| MTBF | ＞100K hrs ,MIL-HDBK-217F(25℃) |
| Size | 193*59*45mm(L*W*H) |
Q:What are the protection forms of overload/over current?
(1)When current drawn exceeds the rating of the PSU, the protection circuit will be triggered to protect the unit against overload/overcurrent.
Protections of overload/overcurrent can be divided into several forms:
(1)FOLDBACK CURRENT LIMITING
Output current decreases about 20% of rated current, shown as curve (a) in the figure below.
(2)CONSTANT CURRENT LIMITING
Output current remains at a constant level and within the specified range while the output voltage drops to a lower level, shown as curve (b) in the figure below.
(3)OVER POWER LIMITING
Output power remains constant. As output load increases, output voltage decreases in proportion, shown as curve (c) in the figure below.
(4)HICCUP CURRENT LIMITING
Output voltage and current keep pulsing ON and OFF repeatedly when protection is activated. The unit automatically recovers when faulty condition is removed.
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