This is a smart distribution meter product manual, which can measure all common electrical parameters, such as three-phase current, voltage, active, reactive power, energy, switch status, harmonic analysis, etc.
This manual introduces the YNT-D smart distribution instrument, a digital meter that measures three‑phase voltage, current, active and reactive power, energy, and harmonic analysis. It features RS‑485 communication, DI/DO expansion, and can be integrated into power monitoring systems.
The document covers safety precautions, wiring diagrams for three‑phase four‑wire and three‑phase three‑wire configurations, installation steps, operation of the front panel, communication settings, and detailed troubleshooting guidance for common faults such as power loss or communication errors. This manual is written in Chinese.
| Rated Voltage | 100Y or 400VAC |
|---|---|
| Input Current Rating | 5A or 1A |
| Power Supply | 220V AC 50/60Hz |
| Power Consumption | <3W (static) |
| Communication Interface | RS‑485 |
| Baud Rate | 1200‑38400 bps (configurable) |
| Operating Temperature Range | -20°C to +75°C |
| Storage Temperature Range | 40°C to +85°C |
| Relative Humidity | 5%–95% non‑condensing |
| Insulation Strength (Power Input) | 22kV |
| Insulation Strength (Current Circuit) | 22.5kV |
A 1 A fuse must be installed on the voltage input terminal.
Both three‑phase four‑wire (3LN, 3CT) and three‑phase three‑wire (2LL, 2CT) configurations are supported.