Short Description:
1. Collect three-phase AC parameters, including voltage, current, power, electrical energy and other electrical parameters, with comprehensive information.
2. RS-485 communication interface with 1 channel ESD protection circuit / 1 channel TTL interface adopts MODBUS-RTU protocol, which has good compatibility and is convenient for programming.
3. Electrical insulation withstands voltage 2000vac.
4. Two power supply modes are available, and the power supply voltage is dc3.3v or dc5-24v.
5. Multiple specifications can be selected, one turn of fixed PCB core or open transformer, which is convenient and easy to use.
Product Overview
Jsy-mk-333 three-phase integrated measurement module is a three-phase integrated measurement module with completely independent intellectual property rights developed by our company using microelectronic technology and special large-scale integrated circuits, using advanced technologies such as digital sampling and processing technology. and SMT process. The technical performance of the detector fully meets the relevant technical requirements of 0.5s three-phase active watt hour meter in the national standard IEC 62053-21, and it can directly and accurately measure the voltage, current, power, power factor, electrical quantity, total. amount and other electrical parameters in a three-phase AC network with a rated frequency of 50Hz or 60Hz. The measuring module is equipped with RS485 1-way communication interface (optional), 1-way TTL interface and MODBUS-RTU communication protocol,
Product Technical Parameters:
1. AC input
1) Voltage range: 380v three-phase four-wire system.
2) current range: 50A
3) Signal processing: special measurement chip is adopted, and AD 24 bit is adopted.
4) Overload capacity: 1.2 times the range is durable; the instantaneous current (<200ms) is 5 times, the voltage is 1.2 times, and the series is not damaged.
5) Input Impedance: channel voltage > 1k Ω / v, channel current ≤ 100m Ω.
2. Communication interface
1) Interface type: 1-way RS-485 communication interface, 1-way TTL interface.
2) Communication protocol: MODBUS-RTU protocol.
3) Data format: software can set “n, 8,1”, “E, 8,1”, “O, 8,1”, “n, 8,2”.
4) Communication rate: the baud rate of the remote RS-485 communication interface can be set to 1200, 2400, 4800, 9600bps; The baud rate of the local RS-485 communication interface is fixed at 9600bps, “n, 8,1” format.
5) Communication data: voltage, current, power, electrical energy and other electrical parameters.
3. Voltage, current and power measurement accuracy : ± 1.0%; active Kwh is level 1.
4. Electrical isolation
Isolate the do/rs-485 interface from the DC power supply, voltage input and current input; Isolation withstand voltage 2000vac.
5. Power supply
2) When dc3.3v power is supplied, the peak voltage should not exceed 3.5V, and the typical power consumption: ≤ 2W.
3) When DC5-24v power is supplied, the peak voltage must not exceed 25V; Typical power consumption: ≤ 2W.
6. Working environment
1) Working temperature: -20 ~ + 70 ℃; Storage temperature: -40 ~ + 85 ℃.
2) Relative humidity: 5 ~ 95%, no condensation (at 40 ℃).
3) Altitude: 0 ~ 3000 meters.
4) Environment: a place without explosion, corrosive gas and conductive dust, and without shaking, vibration and significant impact.
7. Temperature drift: ≤100ppm/℃
8. Installation method: Integrated installation
9. Product size: 65*57*41mm
10. Shape and interface definition
11. Product wiring diagram
