DTSD342-12 Electric Power Distribution Monitor

General introduction:
DTSD342-12 electric power distribution monitor is integrated with measurement and recording, electric energy metering, teleindication and telecontrol, large screen LCD display and network communication.

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~700V
Power consumption:< 0.05VA(single phase)
Accuracy: RMS 0.2 %
Resolution: 0.01V
Current Rated current In: 1A, 1.5A, 5A
Measurement range:0.001In~6A
Power consumption:< 0.05VA(single line rated current)
Accuracy: RMS 0.2 %
Resolution: 0.001A
(active / reactive/ apparent)
Accuracy: 0.2%
Resolution: 0.001kW/kVar/kVA
Grid frequency Measurement range:45Hz~65Hz
Accuracy: 0.2%, 1%
Resolution: 0.01Hz
Electric energy quality measurement Fluctuation and flicker Voltage fluctuation, short-term flicker and long-term flicker
Unbalance degree Positive-sequence, negative-sequence, zero-sequence voltage and current
Transient events Voltage swell, voltage sag, voltage short-term interrupt
Harmonic Times: 2~63(Harmonic voltage and rate, harmonic current and rate)
Accuracy: class A 
Resolution: 0.01 %
Metering Active electric energy Metering accuracy class: 0.2S
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
optocoupler isolation, 4000VRMS
Switch output
4 channel electromagnetic relay output
normally open
Contact rating: AC 250V /3A; DC 30V /3A
Switch input
8 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
Infrared communication port
communication rate: 1200bps
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: 70V~420V
Power consumption: ≤1W, 2VA
size Outline size(mm): 120×120×113 
Hole size(mm): 114×114
Weight About 675g

Main features
1. Adopt high-precision sampling and measuring unit together with high-speed MCU data processing unit, to realize high precision, wide range and accurate measurement as well as fast data analysis.
2. 240*160 dot matrix 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 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.
7. Different communication modules are available to satisfy different interface requirements of various users.

Main funcitons
1. The monitor can measure voltage, current, power, power factor, frequency and other parameters of the grid.
2. With the function of 2~63 times harmonic analysis, the monitor can calculate a number of electric energy quality parameters including voltage fluctuation, flicker, positive-sequence, negative-sequence, zero-sequence voltage and current, etc.
3. Measurement of active and reactive electric energy.
4. Multi-rate electric energy and multi-rate demand measuring
5. The monitor can configure two independent channel of RS-485 communication interface and one channel infrared interface, supporting MODBUS-RTU and DL/T645 dual communication protocol.
6. With switch input and output function, analog transmission output can be configured.

WILLFAR as a faithful electric power distribution monitor manufacturer, mainly manufacture meter data management and energy management instrument, like electrical power data logger, data concentrator, data collector, and power monitor. To serve daily life much better, WILLFAR company also provides custom electrical energy efficiency management solutions as well as smart metering system in customer needs.

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