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DDSU666-CT is a CHINT single-phase (1P2W) energy meter, with external current transformers. It measures active and reactive energy in both directions, has accuracy class c (0.5s), a current range of 0.015-1.5(6) A and communicates over RS485 Modbus-RTU. It mounts on a DIN rail and is used for feed-in limitation and consumption monitoring.
DDSU666-CT is a CHINT single-phase (1P2W) smart energy meter for DIN-rail mounting, with external current transformers. It measures imported and exported active and reactive energy, communicates over RS485 Modbus-RTU and has an LCD display.
SOFAR manuals for the HYD LS1 hybrid inverters show the DDSU666 DIN-rail meter, in the version with a current transformer.
It connects to external current transformers, which are not part of the product; the transformer ratio is set in the meter and in the monitoring app.
The meter measures energy and power (kW, kvar, kVA), current, voltage, frequency and power factor. The RS485 baud rate can be set from 1200 to 19200 bps (default 9600 bps); it operates from -25 to 55 °C, with IP20 protection.
| Manufacturer | CHINT |
|---|---|
| Model | DDSU666-CT |
| Type | Smart energy meter, single-phase |
| Connection type | 1P2W |
| Measurement | via external current transformers |
| Current range | 0.015-1.5(6) A |
| Accuracy class | Class C (0.5S) |
| Constant | 6400 imp/kWh |
| Nominal voltage | 220 V ... 240 V |
| Operating range (voltage) | 0.9 Un ... 1.1 Un |
| Frequency | 50 Hz or 60 Hz |
| Communication | RS485, Modbus-RTU |
| Baud rate | 1200, 2400, 4800, 9600 (default), 19200 bps |
| Measured values | import/export active and reactive energy (kWh, kvarh), instantaneous power (kW, kvar, kVA), current, voltage, frequency, power factor |
| Display | 6 characters, 7 segments, digit size 5.9 x 12.4 mm |
| Pulse output | LED pulse indication |
| Compliance | EN 50470-1/-3, MID B+D certified |
| Operating temperature | -25 ... 55 °C |
| Storage temperature | -35 ... 70 °C |
| Maximum relative humidity | 95 %, non-condensing |
| Ingress protection | IP20 |
| Mounting | DIN rail |
| Dimensions (height x width x depth) | 100 x 36 x 65.5 mm |
| Weight | 0.22 kg (approx.) |
We took these technical data from the manufacturer’s datasheet; transcription errors are possible. For 100% accuracy, please consult the attached datasheet.
Compatibility is calculated automatically from the manufacturers’ technical data and is for information only. For complex systems, we recommend having the configuration checked by a consultant before ordering. Details in the Terms and conditions
