EM427 CT two phase smart bi-directional modbus electric energy meter

                     EM427  CT  two phase smart bi-directional
                                modbus electric energy meter

• single phase digital 120v/240V
• 4 DIN modules, Standard DIN rail Format (DIN43880)
• IEC62053-21/22 Class 1.0,0.5S
• Import &Export active energy
• Import &Export reactive energy
• Instant Volt, Amp, Power factor, Frequency, Active power, Reactive power, Apparent power
• Isolate pulse output (DIN43864)
• LCD display, 6 integer 2 decimal , meter display when power fails
• Large clear backlight display
• Internal transformer
• Current transformer metering
• RS485 communication port, modbus protocol
• IR port
• Program by button on the nameplate
• Memory back-up (EEprom)
• CE approval

specification : 

Dimension :

Wiring diagrams:

  3 Wire with RS485:                                                   

2 wire with RS485 :

Main function:

 Measuring Function:

  Meter can measure import & export active energy , import & export reactive energy.

 Display function :

  Smart meter have two status: cycle display status andbutton press display .When pressing the button, User can set according their request. Button press will Backlight the LCD. Display cycle can be set within 5~20 seconds, The default is 5 seconds. 

Electricity parameters measurement and monitoring :

  Measure record and display voltage, current, power and power factors. error is not more than ±1%.

Communication Function :

  With an infrared COM and a RS485 COM. Communication protocols fit Modbus RTU standard. RS485 communications transfer rates allow selected at 1200bps, 2400bps, 4800 bps and 9600bps, default is 9600bps.

Alarm function:

  When the meter connect wire wrong example: current reverse, the meter will display     , the ALARM led will be on. 

Pulse output function : 

   Smart meter is equipped with a pulse output which is fully separated from the inside circuit. That generates pulses in proportion to the measured energy .include the testing pulse output of active energy and reactive energy. 8/ 11 Test pulse output contact (P+/P-). 

CT ratio setting  function :

Press “Page down” and “page up” buttons to select the CT transformation ratio press “SET” button to save the setup  

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