DA28
Single phase two wire/ Single phase three wire
DA28: Single phase two wire/ Single phase three wire
Technical Specification
| Meter format | Single phase two wire with optional neutral current measurement |
| Reference voltage | 230V |
| Operating voltage | 0.8Un ~ 1.3Un |
| Current | 5A-80A (Single Phase Two Wire) |
| Starting current | 0.004Ib |
| Reference frequency | 50/60Hz ±1% |
| Accuracy class | Class 1.0 (Active) |
| Clock accuracy | ±0.5s/day@23℃ |
| Impulse generator energy constant | 1000 imp/kWh, 1000 imp/kvarh (Configrable) |
| Operating temperature range | Normal range:-25℃~+55℃ (3k6) Limited range:-40℃ ~ +70℃ (3k7) |
| Storage and transport temperature range | -40℃ ~ +70℃ (3K7) Max. temperature can be up to 85℃ (optional) |
| Relative humidity | ≤ 95% (non-condensing) |
| Ingress protection rating | IP54 |
| Backup Power for Power Interruption | Replaceable lithium battery support RTC |
| Battery life | >5 years(blackout condition) |
| Communication port | GPRS+RF/4G/PLC |
| Communication interface | Optical(IR) / MC171 / RS485 |
| Meter physical dimensions | 155 mm x 65 mm x 94 mm; PC+GF (20%) |
| Terminal hole diameter | 8mm |
| Weight | Appr. 0.85kg |