JSY-MK-149 Single phase guideway table


  • Collect single-phase AC parameters, including voltage, current, power, electric energy and other electrical parameters.
  • The special measuring chip is adopted, and the effective value measurement method has high measurement accuracy.
  • Support the wireless 802.11 b/g/n standard.
  • With one RS-485 communication interface.
  • The communication protocol adopts standard Modbus RTU, which has good compatibility and is convenient for programming.
  • RS-485 communication interface with ESD protection circuit.
  • It can be changed and customized according to customer requirements.

Product Detail

Product Tags


Jsy-mk-149 single-phase guide rail RS485 electric energy measuring instrument can be widely used in energy-saving transformation, electric power, communication, railway, transportation, environmental protection, petrochemical, steel and other industries, and can be used to remotely monitor the current and power consumption of AC equipment.

Technical Parameter

1. Single phase AC input
1) Voltage range: 100V, 220V, etc
2) Current range: 5A, 50a, 100A, 150A, etc. optional, external open transformer model optional
3) Signal processing: special measurement chip is used, and 24 bit AD is used
4) Overload capacity: 1.2 times the range is sustainable; Instantaneous (< 20ms) current is 5 times, voltage is 1.2 times, and range is not damaged
5) Input impedance: voltage channel > 1K Ω /v; Current channel ≤ 100m Ω

2. Communication interface
1) Interface type: RS-485 interface
2) Communication protocol: MODBUS-RTU protocol
3) Data format: "n, 8,1"
4) Communication rate: the baud rate of RS-485 communication interface can be set at 1200, 2400, 4800, 9600bps; The baud rate is 9600bps by default

3. Measurement output data
Voltage, current, power, electric energy, power factor, frequency and other electrical parameters,

4. Measurement accuracy
Voltage, current and electric quantity: ± 1.0%, active kwh level 1

5. Isolation
RS-485 interface is isolated from power supply, voltage input and current output; Isolation withstand voltage 2000vac

6. Power supply
1) Optional 100V, 220V, voltage line 100v~220v
2) When AC220V power is supplied, the peak voltage shall not exceed 265V; Typical power consumption: ≤ 2W

7. Working environment
1) Working temperature: -20 ~ +70 ℃; Storage temperature: -40 ~ +75 ℃.
2) Relative humidity: 5 ~ 95%, no condensation (at 40 ℃).
3) Altitude: 0~3000 meters
4) Environment: no explosion, corrosive gas and conductive dust, no significant shaking, vibration and impact.

8. Temperature drift: ≤100ppm/℃

9. Installation method: 2p guide rail installation

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