Performance Characteristics

High precision measurement of single phase voltage, single phase current, active power, reactive power, apparent power, power factor, frequency of electric parameters

Forward and reverse active or reactive energy measurement

Division of electric energy metering, time-sharing power timing meter reading

Measurement of three-phase voltage, three-phase current total harmonic distortion (THD), 2-31 odd harmonic component

Provide the digital tube display, local data query

Menu button intuitive, simple operation

Current, voltage gain programmable setting

Programmable voltage ratio

Support for fire control, remote cut off the fault circuit

Provide multiple loop control nodes, can be used for the alarm, trip control

Support for RS-485 communication, Modubus-RTU protocol

Support for switching input, output, analog quantity transmitting output

Convenient installation, wiring is simple, small engineering quantity

A wide range of AC/DC power supply: AC/DC 80-270V

To be completed by SCADA, PLC in a variety of communications software network

Technical Index

Accuracy of measurementent

voltage level 0.5, current level 0.5, active power 0.5, reactive power level 0.5,Frequency ±0.02Hz, active electric energy class 0.5s or class 0.2s, reactive energy grade 1 or grade 2, power factor 0.5

Signal input

Connection mode of four phase three wire, three phase three line

Rated voltage of AC 57.7V, AC 100V, AC 220V, AC 380V

Over load 1.2 times ( Continued ), 2 times / second ( instantaneous )

Power <1VA/ phase

Impedance >300KΩ, current: <20mΩ

The frequency of 45~65Hz

Auxiliary power supply

Working range of AC/DC 80V~270V

Power consumption <4VA

Function module

Communication interface 1 way RS-485 communication, Modbus-RTU protocol

Baud rate: 1200~9600bps, the default 2400bps

Switch input support 4 stem node input

The switch output support 3 relay output, capacity: AC 250V/5A, DC 30V/5A

Transmission output support 3 analog output: 0/4~20mA or 0~5/10V

Environment

Working temperature:-10°C ~+55°C

Storage temperature:-25°C ~+70°C

Relative humidity is less than 93%, no corrosive gas

Elevation≤2500m

Safety

Insulation resistance >100MΩ

AC withstand voltage AC 2KV

Electromagnetic compatibility

ESD level 4

Electrical fast transient burst level 4

Selection of Specification

Digital Panel Meter with A V Hz Cos W Var Kwh Varh(9999 display programmable)

Model NO.

Display

Frame size(mm)

Hole size(mm)

Communication interface

RH-D3Y

LCD

96*96

92*92

Yes

RH-D7Y

LCD

72*72

68*68

Yes

RH-D2Y

LCD

120*120

111*111