Core values
Diligence and excellence, sincerity and goodness
DDSU1820a is a multi-functional single-phase DIN Rail energy meter. It’s designed for metering management applications in public buildings, industrial plants, intelligent microgrids, and other fields. DDSU1820a can be used in multi-tenant submetering systems and energy management, which can measure electrical parameters, bidirectional energy metering, alarms, waveform record, and harmonics analysis.
| Parameters | Accuracy | Resolution | Range |
| Voltage | 0.2% | 0.1V | 175V～265V |
| Current | 0.2% | 0.001A | 0.25A～80 A |
| Active Power | 0.5% | 0.001kW | -20 kW～20 kW |
| Reactive Power | 0.5% | 0.001 kvar | -20 kvar~20kvar |
| Apparent Power | 0.5% | 0.001 VA | 0～20 kVA |
| Power Factor | 1% | 0.001 | -1.000～1.000 |
| Frequency | ±0.02 Hz | 0.01Hz | 50 or 60 Hz(±5%) |
| Active Energy | 0.5S | 0.01 kWh | 0～2000000 kWh |
| Reactive Energy | 0.5% | 0.01 kvarh | 0～2000000 kvarh |
| Apparent Energy | 0.5% | 0.01 kVAh | 0～2000000 kVAh |
| THD&Harmonics | 2% | 0.01% | 2nd～31st |
| Temperature | ±2℃ | 0.1℃ | -20～150℃ |
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Metering Phase-to-Neutral Voltage, Line-to-Line Voltage, Current Active Power, Reactive Power, Apparent Power, Power Factor Frequency Load Nature Energy Energy and Energy Record Bi-Directional Energy Single-Phase Energy Monthly Energy Record Time of Use (TOU) Two TOU Settings can Automatically Switch at the Setting Time Four Tariffs, 12 Seasons, 14 Schedules DST Function Weekend and 10-Year Holiday Settings |
Power Quality Voltage Unbalance, Current Unbalance THD and Individual Harmonics to 31st Crest Factor, THFF, K Factor Voltage and Current Phase Angles Alarms Over or Under Setting Limit Power Measurement Parameters can be Set Terminal Temperature Measurement Three Circuits Direct Measurement Built-In Sensor Display OLED Two Languages: Chinese and English
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