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18W AC DC open frame switching power supply 12VDC output
Descriptions
LO20-26D1212-04-C State Grid TTU dedicated switching power supply.The AC-DC converter is a three-phase four-wire power dedicated Switching power supply designed for intelligent distribution terminal,intelligent power distribution detection terminal,etc.According to the latest national grid company enterprise standard and operates over a very wide input voltage range:165-480VAC or 230-680VDC.It meets the three-phase three wire or four-wire rated voltage.So it is a design solution for electric-meter application sourced from a three-phase AC supply with the requirement of high isolation voltage and rigorous EMC,for extremely harsh EMC environment,we recommend using the application circuit show in Design Reference of this datasheet.
Features
Specifications
| Selection Guide | |||||
|
Part No. |
Output Power | Nominal Output Voltage and Current(Vo/Io) | Efficiency at 230VAC (%) Typ. | Capacitive Load (µF) Max. | |
| Vo1/Io1 | Vo2/Io2 | ||||
| LO20-26D1212-04-C | 18W | 12VDC/1500mA | No Pin* | 80 | 4000 |
| Note: * If the second road is empty, you can customize the second 12V/400mA on this model. | |||||
| Input Specifications | |||||
| Item | Operating Conditions | Min. | Typ. | Max. | Unit |
|
Input Voltage Range | AC input | 165 | -- | 480 | VAC |
| DC input | 230 | -- | 680 | VDC | |
| Input Frequency | 47 | -- | 63 | Hz | |
|
Input Current | 165VAC | -- | -- | 0.7 |
A |
| 230VAC | -- | -- | 0.4 | ||
| Inrush Current | 230VAC | -- | 40 | -- | |
| Input Apparent Power | 220VAC input, output power Po=10W | -- | -- | 18 | VA |
| Power Factor | 220VAC input, full load | PF≥0.8 | |||
| Input Over-voltage Protection | Input double 380/220 VAC (three-phase four-wire), testing time 1S, interval 10S | Normal Output | |||
|
Recommended External Input Fuse | Three-phase four-wire input | 3.15A/250V slow-blow required | |||
| Any phase input | 3.15A/500V slow-blow required | ||||
| Hot Plug | Unavailable | ||||
| Output Specifications | |||||
| Item | Operating Conditions | Min. | Typ. | Max. | Unit |
| Output Voltage Accuracy | -- | ±2 | -- |
% | |
| Line Regulation | Full load | -- | ±0.5 | -- | |
| Load Regulation | 0%-100% load | -- | ±1 | -- | |
| Ripple & Noise* | 20MHz bandwidth (peak-to-peak value) | -- | -- | 100 | mV |
| Temperature Coefficient | -- | ±0.02 | -- | %/℃ | |
| Stand-by Power Consumption | 230VAC | -- | -- | 0.5 | W |
| Mechanical Specifications | |
| Dimension | 76.20 x 50.80 x 30.00 mm |
| Weight | 65g (Typ.) |
| Cooling Method | Free air convection |
Dimensions and Recommended Layout
