| After-sales Service: | Life Time Support/Warranty Certificate |
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| Warranty: | 1 Year |
| Display: | Digital |
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- Active single-phase electric power metering,nosubject to adjust in terms of long working;
- Each user (meter) responds to a card,wellprotect from forgery;
- Once the remaining electric power quality is approaching the alarming power quality,the digitaltube should be lighted to remind user of timely purchasing;
- Once the electric consumption available is out, it should be auto cut-off;
- Protect form power theft, and recording the information auto;
- Auto cut-off for overload;
-Date-copying function make the electricitydepartment easier t manage;
-The meter has the feature of long-using-life,high-reliable;
-The IC card power selling control system has the function as power selling and using control.
| Model | DDSY540-40A |
| Measurement range Currect | 40A |
| Resolution | 0.1 μ Ω |
| Measurement accuracy | ± (reading × 0.5%+1 μ Ω) |
| Test current accuracy | ± 5% |
| Charging power supply | Input 180V~220V, 50Hz/60Hz |
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