PD1056-1 Electric Power Distribution Monitor

General introduction:
PD1056 electric power distribution monitor integrates measurement, LCD display and communication, which can measure the grid current. The communication interface supports MODBUS-RTU communication protocol. Equipped with 2 channel switch input and 2 channel switch output, the monitor can achieve the function of local or remote switch signal monitoring and output control(i.e. “teleindication” and “telecontrol” functions), or it can choose 1-4 channel to flexibly control the transmission output.

The monitor is applicable to all kinds of energy management system, substation automation, distribution network automation, residential power monitoring, industrial automation, intelligent switchboard and switch cabinet, as well as power plant, hydropower station and other automation system for electricity management.

It follows the following criteria: GB/T17215.322-2008 static active energy meter (class 0.2S and class 0.5S), GB/T17215.321-2008 static active energy meter (Class 1 and 2), GB/T17215.323-2008 static reactive energy meter (Class 2 and class 3) and Modbus-RTU GB/T13850-1998 transmission standard.

Technical specifications
Items Technical index
Wiring form Single phase
Measurement Voltage Reference voltage Un:AC220V, AC100V, AC57.7V
measurement range:10V~420V
power consumption:< 0.05VA(single phase)
accuracy: RMS 0.2 %
Resolution: 0.01V
Current Rated current In:1A, 1.5A, 5A
measurement range:12mA~ 6A
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
Metering Active electric energy Metering accuracy class: class 1 or class 0.5S
Resolution: 0.01 kWh
Reactive electric energy Metering accuracy class: class 2
Resolution: 0.01 kvarh
digital signal electric energy pulse output(optional) 1 channel active electric energy pulse output
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
analog signal Transmission (analog) output
4 channel transmission output
Current output type (4~20mA or 0~20mA or 0~24mA)
Voltage output type (0~5V or 0~10V)
Accuracy: 0.5%
Communication RS-485 communication port
Interface type: two-line half duplex
Communication rate: 600bps~9600bps
Protocol: Modbus-RTU
Environment Working temperature -25℃~+60℃
Limit working temperature -35℃~+70℃
Relative humidity ≤ 95%(RH)
Others Power supply AC or DC power supply
maximum input range: 40V~420V
Power consumption: ≤1W, 2VA
size Outline size (mm):96×48×121
opening size(mm):92×45
Weight About 450g

Main functions
PD1056-1N series products contain a total of 11 models. For specific information, please refer to the following product model and function check table.

Model/Function 1A 1B 1C 1D 1G 1H 1N 1P 1Q 1V 1W
Voltage measurement

Current measurement

Frequency measurement

Active power measurement

Reactive power measurement

Power factor measurement

Apparent power measurement

Active electric energy measurement

Reactive electric energy measurement

Active electricity pulse output port

Off-limit alarm
Transmission output

Switch input(teleindication)
Switch output (telecontrol)

Note: "√" indicates that the function is possessed, and "△" indicates the function is optional.

Main features
1. The monitor adopts high-precision sampling and measuring unit together with high-speed MCU data processing unit, which can realize high precision, wide range and accurate measurement as well as fast data analysis.
2. Wide viewing angle LCD display is used to show richer contents.
3. 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. Support RS-485 communication port and industrial standard communication protocol, convenient and flexible for network construction.

WILLFAR as a leading electric power distribution monitor manufacturer, mainly manufacture meter data management instrument, like data logger, data concentrator, data collector, and power monitor, for smart data logging, data management and data transmission applications. To serve daily life much better, WILLFAR company also also provide custom meter data management solutions as well as smart metering system in customer needs.

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