DTSD1352-4S DIN-Rail Multi-Circuit Power Meter
Characteristic
Multi-Circuit Metering
Up to 4 Three-Phase Circuits
or 12 Single-Phase Circuits
Communication
RS485 (Modbus-RTU)
Optional Ethernet Communication
Modular Design
Voltage, Current, Power & Power Factor
Phase Angle, Unbalance & Harmonics
Main Functions
Measurement ①: U, I, P, Q, S, PF, F
Measurement ②: Phase Angle, Voltage/Current Unbalance
Energy Metering: Forward & Reverse Active Energy, Four-Quadrant Reactive Energy
Multi-Circuit: Up to 4 Three-Phase Circuits or 12 Single-Phase Circuits
Harmonics: Total Harmonic Distortion & 2nd–31st Harmonics
Demand: Current Demand, Power Demand & Maximum Demand
Communication: RS485 (Modbus-RTU)
Energy Statistics: Multi-Rate Energy Statistics & Energy Freeze
Event Recording: Up to 200 Event Records
Alarm: Overvoltage, Overcurrent, Phase Failure and DI Linkage Alarm
Installation: 35 mm DIN Rail
Main Parameters
Auxiliary Power: AC/DC 85–265V or DC 40–60V
Rated Voltage: AC 3×220V/380V
Input Current: 50mA / 100mV / 333mV Optional
(External Current Sensor Required)
Frequency: 45–65Hz
Voltage & Current Accuracy: Class 0.5
Active Energy Accuracy: Class 1
Reactive Energy Accuracy: Class 2
Harmonics Accuracy: ±1% for 2nd–31st Harmonics
Communication: RS485 (Modbus-RTU)
Optional Communication: Ethernet (Modbus TCP)
Baud Rate: 1200–38400 bps
Working Temperature: -25°C to +55°C
Humidity: ≤95% RH, No Condensation
Installation: Standard 35mm DIN Rail
Dimension
Wiring
Multi-Circuit Metering Up to 4 Three-Phase Circuits or 12 Single-Phase Circuits
Output
RS485 (Modbus-RTU)
Modbus-RTU into your EMS / SCADA
Output (optional)
Ethernet (Modbus TCP)
System voltage
AC 3×220V/380V
Accuracy
Class 0.5
Voltage & current
Technical data
| Parameter | Value |
|---|---|
| Measurement ① | U, I, P, Q, S, PF, F |
| Measurement ② | Phase Angle, Voltage/Current Unbalance |
| Energy metering | Forward & Reverse Active Energy, Four-Quadrant Reactive Energy |
| Multi-circuit | Up to 4 Three-Phase Circuits or 12 Single-Phase Circuits |
| Harmonics | Total Harmonic Distortion & 2nd–31st Harmonics |
| Demand | Current Demand, Power Demand & Maximum Demand |
| Energy statistics | Multi-Rate Energy Statistics & Energy Freeze |
| Event recording | Up to 200 Event Records |
| Alarm | Overvoltage, Overcurrent, Phase Failure and DI Linkage Alarm |
| Installation | 35 mm DIN Rail |
| Auxiliary power | AC/DC 85–265V or DC 40–60V |
| Input current | 50mA / 100mV / 333mV Optional (External Current Sensor Required) |
| Frequency | 45–65Hz |
| Active energy accuracy | Class 1 |
| Reactive energy accuracy | Class 2 |
| Harmonics accuracy | ±1% for 2nd–31st Harmonics |
| Baud rate | 1200–38400 bps |
| Working temp. | -25°C to +55°C |
| Humidity | ≤95% RH, No Condensation |
Built-in functions
- Communication RS485 (Modbus-RTU) Optional Ethernet Communication
- Modular Design Voltage, Current, Power & Power Factor Phase Angle, Unbalance & Harmonics
DIN-rail mounted. Send us the rated values of your circuit and the supply voltage; we confirm the ordering code, wiring diagram and register list within one working day.
| Main technical parameter | |
| Circuits | DIN-rail multi-circuit power meter; accepts the current input of 4 three-phase circuits or 12 single-phase circuits at the same time |
| Measured parameters | Voltage, current, power, power factor, phase angle, unbalance and harmonics |
| Auxiliary power | AC/DC 85-265 V or AC 40-60 V; power consumption <=10 VA |
| Frequency | 45-65 Hz; accuracy 0.05 Hz |
| Voltage input | Rated AC 3×220/380 V; overload 1.2 times continuous, 2 times for 1 s; power consumption <=0.5 VA per channel |
| Current input | Secondary rated current 50 mA; overload 1.2 times continuous, 10 times for 1 s; power consumption <=0.5 VA per channel |
| Measurement accuracy | Voltage and current 0.5 class; active energy 1 class; reactive energy 2 class; 2nd to 31st harmonic +/-1% |
| Energy metering | Four-quadrant energy, 12-month multi-rate statistics, 31-day freeze, forward and reverse energy |
| Tariff setting | 4 time zones and 14 time periods |
| Demand and extremes | Maximum current, maximum power demand, real-time current and power demand; voltage, current and power extremes of the current and previous month |
| Alarms | Overvoltage, overcurrent, phase failure and DI linkage output |
| Event logging | 200 loggings recording the actions of DI and DO |
| Pulse output | Optocoupler pulse with open collector; pulse constant defaults to 400 imp/kWh |
| Communication | RS485 interface, Modbus-RTU protocol, baud rate 1200-38400 |
| Switch input | 2-way or 4-way passive dry contact with built-in power supply; 2-way active wet node AC220 V to identify generator and mains access |
| Switch output | Relay normally open contact; contact rating AC 250 V/3 A, DC 30 V/3 A |
| Option note | Pulse output and active switch input are mutually exclusive; the four passive / two active input set and the two passive / two output set are also alternatives |
| Other technical parameter | |
| Power frequency withstand voltage | >AC 2 kV for 1 min |
| Insulation resistance | Input and output terminals to the chassis >100 MOhm |
