Product Details

EM427 CT 120/240V 1.5(6)A ct operated

two phase smart bi-directional modbus electric energy meter

Two phase three wire metering
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 :

Electrical Characteristics	EM427 CT
Voltage(v)	120/240V
Operational voltage	(70-130)%Un
Current(A)
- Iref	1.5A
-Itr	0.15A
-Imax	6A
-Imin	0.075A
-Ist	3mA
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)	6400
LED
LED constant	6400
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-).

CT ratio setting function :

Press “Pagedown” and “pageup” buttons to select the CT transformation ratio press “SET” button to save the setup .

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