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Wall mounted DC power meter DJSF1352

  • DC watt-hour meter 
  • RS485 function
  • charging pile, battery, solar panel and other DC signal equipment、modern DC power supply and distribution system
 
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Wall mounted DC power meter DJSF1352

The DJSF1352 type electronic DC watt-hour meter adopts liquid crystal display and has RS485 function to exchange data with microcomputer. It is suitable for DC metering of charging pile, battery, solar panel and other DC signal equipment, and can also be used in modern DC power supply and distribution system such as industrial and mining enterprises, civil buildings, building automation and so on.

Products are composed of measurement unit, data processing unit, communication unit, display unit and so on. it has the functions of electric energy measurement, data processing, real-time monitoring and LCD display. This meter meets the technical requirements of GB/T33708-2017 static DC watt-hour meter, Q/GDW1825-2013 DC watt-hour meter, GB/T29318-2012 electric vehicle non-vehicle charging watt-hour meter and Q/GDW364-2009 single-phase intelligent watt-hour meter.




Function description of Wall mounted DC power meter DJSF1352

★ has forward, reverse active power energy measurement function, combined electric energy

= forward + reverse;

★ voltage, current, power measurement;

★12 months settlement function;

★ has calendar, timing and leap year automatic conversion function, with timing function.

The clock error should not be greater than 5 minutes, and only once a day when the clock is not allowed within 10 minutes before and after zero;

★ there are two sets of rate periods, the automatic conversion of two sets of rate periods can be realized by setting the time in advance. Each set of rate period can be set up at least two time zones in 24 hours and at least 8 periods, with a minimum interval of 15 minutes. Time can be set across zero points;

★ modulation infrared communication interface and RS-485 communication interface, using DL/T645-2007 communication protocol and Modbus-RTU protocol, the communication rate of the RS485 can be set at 1200 bps 、 2400bps 、 4800bps 、 9600bps, and the modulation infrared is fixed at 1200 bps.




Dimension drawings of Wall mounted DC power meter DJSF1352





Technical parameter of Wall mounted DC power meter DJSF1352

At rated voltage (Ub), the basic error of the watt-hour meter should not exceed the error limit of the following table

Range of load current (I)

variation

Error limits

0.02 In ≤I<0.05 In

±1.5%

0.05 In ≤I ≤Imax

±1 .0%


Measuring voltage range

Scope

0.4 Ub -1.1Ub (Umax <1000 V)

Extension

0.1 Ub -1.15Ub (Umax <1000 V)


Power consumption

Voltage line

≤0.5 VA

Current line

VA ≤0.1

Auxiliary power line (DC power supply)

VA ≤2

Auxiliary power line (AC power supply)

W ≤2


Working environment conditions

Operating temperature

range

-25℃~+60℃

Limit operating temperature

range

-40℃~+70℃

Storage

transport limit temperature

-40℃~+70℃

Relative humidity

<75 per cent (annual average)


Communication interface

Communicat

ions baud rate

RS485:1200/2400/4800/9600

Data format

O/E/N-8-1/2, factory default E-8-1

Communicat ions

Statute

DL/T645-2007 Agreement, Modbus-RTU Agreement


Mechanical parameters

★ dimensions :160±0.5 mm( length) 112±0.5 mm( width) 58±0.5 mm( thickness)

★ weight: approximately 0.5 kg


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