EM427 120/240V 10(100)A smart electricity kwh meter

            single phase digital 120v  din rail watt-hour meter 

 

• single phase digital 120/240V
• 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
• Direct metering up to 100A
• RS485 communication port, modbus protocol
• IR port
• Program by button on the nameplate
• Memory back-up (EEprom)
• CE approval

 

specification : 

 

Electrical Characteristics	EM427
Voltage(v)	120/240v
Operational voltage	(70-130)%Un
Current(A)
- Iref	10A
-Itr	1A
-Imax	100A
-Imin	0.5A
-Ist	40mA
Power consumption of current circuits(VA)	< 0.01
Power consumption of voltage circuits(W)	< 1.3W
General data
Frequency (Hz)	50/60
Memory back-up	EEprom
Environment resistance to heat and fire	Terminal 960°C Cover 650°C
Enclosure material
upper	ABS+PC
lower	ABS+PC
Pulse output
Pulse width(ms)	80
Pulse constant(imp/kWh)	1000
LED
LED constant	1000
Dimension
Width (mm)	72
Height (mm)	104.5
Depth (mm)	60

 

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-).