DTSD342-5 DIN Rail Mount Power Monitor

General introduction:
DTSD342-5D/5Z/5N DIN rail mount power monitor (DIN35mm rail installation) integrates measurement and recording, electric energy metering, teleindication and telecontrol, large screen LCD display and network communication, which can measure voltage, current, power, power factor, frequency and other parameters of the grid. In addition, the monitor possesses the function of 2~50 times harmonic analysis, calculation of a number of electric energy quality parameters, measurement of active and reactive electric energy as well as multi-rate electric energy and multi-rate demand measuring.

RS-485 communication interface is configured which supports MODBUS-RTU and DL/T645 dual communication protocol. Switch input and output function can also be configured.

The monitor can be widely used in substation automation, industrial control and industrial automation system, energy management system, residential power monitoring and other occasions.

It complies with the following standards:
1. GB/T17215.301-2007 special requirements of multi-function electric energy meter.
2. GB/T17215.322-2008 static active electric energy meter (class 0.2S and class 0.5S).
3. GB/T17215.321-2008 static reactive electric energy meter (class 1 and class 2).
4. GB/T17215.323-2008 static reactive electric energy meter (class 2 and class 3).
5. DL/T 614-2007 multifunctional electric energy meter.
6. DL/T 645-2007 communication protocol of multifunctional electric energy meter.
7. Modbus-RTU.

  • Sub wiring diagram of three-phase four-wire monitor main terminal through CT (monitor powered by PT)
  • Sub wiring diagram of three-phase four-wire monitor main terminal
  • Sub wiring diagram of three-phase four-wire monitor main terminal through CT (no PT)
  • Sub wiring diagram of three-phase three-wire monitor main terminal through CT (monitor powered by PT)
Technical specifications
Items Technical index
Wiring form three-phase three-wire, three-phase four-wire, single phase
Measurement Voltage Reference voltage Un:AC380V, AC220V, AC100V, AC57.7V
Measurement range: 10V~420V
Power consumption: < 0.05VA(single phase)
Accuracy: RMS 0.2 %
Resolution: 0.01V
Current Current specifications: 0.3(1.2)A, 1(6)A, 1.5(6)A, 5(6)A, 5(60)A, 10(80)A, 20(80)A
Measurement range: 0.001In ~ Imax
Power consumption: < 0.05VA(single channel rated current)
Accuracy: RMS 0.2 %
Resolution: 0.001A
(active / reactive/ apparent)
Accuracy: 0.5%
Resolution: 0.001kW/kVar/kVA
Grid frequency Measurement range: 45 Hz~65 Hz
Accuracy: 0.2%
Resolution: 0.01 Hz
Harmonic Times: 2~50 
Accuracy: class A
Resolution: 0.01 %
Metering Active electric energy Metering accuracy class: class 0.5S or class 1
Resolution: 0.01kWh
Reactive electric energy Metering accuracy class: class 2
Resolution: 0.01kvarh
digital signal electric energy pulse output 2 channel electric energy(active and reactive) pulse output(reactive pulse is optional)
optocoupler isolation, 4000VRMS
Switch output
2 channel electromagnetic relay output
normally open
Contact rating: AC 250V /3A; DC 30V /3A
Switch input
2 channel dry contact input
optocoupler isolation, 4000VRMS
Communication RS-485 communication port Interface type: two-line half duplex
communication rate: 600bps~38400bps
Protocol: Modbus-RTU and DL/T-645
Environment Working temperature -25℃~+60℃
Limit working temperature -35℃~+70℃
Relative humidity ≤95%(RH)
Others Clock < 0.5 second per day
Power supply AC or DC power supply
maximum input range: 40V~420V
Power consumption: ≤1W, 2VA
size Outline size(mm): 126×90×74
Weight About 520g

Main features
1.Adopt high-precision sampling and measuring unit as well as high-speed MCU data processing unit, achieving high precision, wide range and accurate measurement as well as fast data analysis.
2. Multi-line wide viewing angle LCD display is used to show richer contents.
3. The LCD display is equipped with white backlight to meet the requirement of consulting data in dark environment.
4. Nonvolatile memory is adopted to store all kinds of data, which can save data for a long time without losing data due to power failure.
5. With the high-precision temperature-compensation clock chip, the accuracy of the clock is guaranteed in the working temperature range.
6. Support RS-485 communication port and industrial standard communication protocol, convenient and flexible for network construction.

Main funcitons
1. Measurement of single phase voltage and current, metering of positive and negative active electric energy, identification and indication of power direction.
2. Optional time-sharing multi-rate electric energy metering function, through the upper computer the time table and rate parameters can be set.
3. With one channel RS485 communication interface, MODBUS-RTU protocol and DL/T645 protocol are optional.
4. With one channel active electric energy pulse output, 2 channel of switch input or output is optional.
5. Current circuit under 100A can get direct access to our monitor; current circuit above 100A need external current transformer, connecting by secondary line.
6. Voltage signal power supply, no need for auxiliary power supply.
7. Large screen LCD display, data cycle display.

WILLFAR as a leading DIN rail mount power monitor manufacturer, mainly manufacture meter data management instrument and energy efficiency management instrument, like data logger, data concentrator, data collector, and power monitor. To serve daily life much better, WILLFAR company also provides custom meter data management and electrical energy management solutions in customer needs.

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