EM418 solar energy meter single phase kwh meter electric digital kwh meter

Main Functions and features:

MID approved with appendix “B”and “D” certification

Single phase induction watt hour meter

Standard DIN rail Format (DIN43880)

IEC62053-21/22 Class 1.0,0.5S

Bi-directional active energy measuring , Bi-directional reactive measuring

Recording MD and it’s ccurrent time

Instant Volt, Amp, Power factor, Frequency, Active power, kvar meter , Apparent power

Load Profile, TOU of 4 tariffs

Summer time switch

Isolate pulse output and IR (DIN43864)

LCD display, 6 integer 2 decimal

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)

The meter is intended to be installed in a Mechanical Environment ‘M1’, with Shock and Vibrations of low significance, as per 2004/22/EC Directive and should be installed in Electromagnetic Environment ‘E2’, as per 2004/22/EC Directive. 

Performance criteria

Operating humidity                           ≤ 75%

Storage humidity                                   ≤ 95%

Operating temperature                             -5°C - +45°C(3K5)

Storage temperature                         -25°C - +55°C(3K6)

Humanity                                75% yearly average,95% on 30 days/year

International standard                                  EN50470-3 &IEC62053-21

Accuracy class                                                                CI.1

Protection against penetration of dust and water   IP51

Insulating encased meter protective class         Ⅱ

Connection area main terminals     

Current terminals flexible 1×mm2              0-16mm2

  another terminal flexible 1×mm2               0-2.5mm2

 

 Meter specification

	Direct connected meters
Voltage(v)	230V
Operational voltage	±70%Un
- 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
Time-keeping accuracy	<0.5s/day
Clock operating with battery	>15 years
Power off clock running time	>5 years
upper	ABS+PC
lower	ABS+PC
Pulse output
Pulse width(ms)	80
Pulse constant(imp/kWh)	400
LED constant	400
Width (mm)	126
Height (mm)	104.5
Depth (mm)	60

Measuring Function

  Meter can measure import active energy , export active energy , Bi-directional reactive measuring.With time-division measurement function, user can store or calculate active and reactive energy according to the time interval of 4 tariffs ( Sharp, peak, Even, valley).

 Demand function

Measuring the date and time of bi-direction and different time maximum demand, also store the data of time scales.  Max demand can be set by slip Frequency, demand interval and slip Frequency  time can be setup .  

TOU function

The internal clock circuit of energy meter has time automatic switching function.

Calendar, clock and rate can be set and adjustment through RS485, infrared interface.

At least 4 tariffs and 12 time interval can be set within a natural day, min time interval is 15 minutes. Time 

electricity parameters measurement

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

Data store function

It can store 12 account months of two directions, total active energy data and bi-directional reactive energy data. Data restore time is at 0’clock the end of a month or any day of a month from 1~28 on hour.

  It can store 12 account months of two way Max demand and date, time 

Summer/winter time switch permit/prohibition

 Smart meter provide automatic summer/winter time switch accomplished at 02.00 on the last Sunday of March(forward 1 hours) and at 03:00 on the last Sunday of October(back 1 Hours).

  Summer/winter time switch can permit or prohibition by RS485 or IR port.

Communication Function

With an infrared COM and a RS485 COM. Its physical layers are independent with each other. One communication channel will not be affected by the other one.Communication protocols fit Modbus RTU standard.RS485 circuit and energy meter internal circuit can realize electricalisolation and failure protection of circuit.

RS485 communications transfer rates allow selected at 1200bps, 2400bps, 4800 bps and 9600bps, default is 9600bps.

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. 14/ 15 Test pulse output contact (P+/P-),13/ 15 Test pulse output contact (Q+/Q-)

 Alarm function

 When the meter connect wire wrong example: when current connection is reverse the ALARM led will be on.

 Password verify

 On the smart meter display will appear : PA  followed by the currently memorized value . “PA” means “Password”,”0000”means the 4 digits of the Password. we can use press “Page Down” button to decrease the input value, and press “Page Up” to increase the input value ,press the “SET” button to switch the input Password digits, when the Password is correct, the meter will enter “program status” and display the “ID” program interface.

 ID setting 

  After the Password authentication , the meter will display the “ID XX” setup interface. As the following picture ”Id 00”  it means the current ID address is 00 (the ID address is hex code)

 Press “Page Down” button to decrease the digits. press ”Page Up” to increase the digits,press “SET” button to save the setup, the interface will switch to Baudrate setup interface automatically.  

 Baud rate setting

 we can use press “Page Down” button to decrease the input value, and press “Page Up” to increase the input value ,press the “SET” button to switch the input digits, when the baudrate is correct, the meter will enter “program status” and display the “CT” program interface.  

Password setting:

 The meter will display the current password after enter the password setup interface, press the “SET” to change the password. Use “page dow” and “page up” button to input password as you want. After 30 seconds the meter will save the password you changed.

            

 

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