Performance Characteristics
*High precision measurement of three phase voltage,three 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
*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
*Programmable PT/CT ratio
*Provide multiple circuit leakage current monitoring
*Provide multiple loop control nodes,can be used for alarm, trip and other control
*Support for fire control,remote cut off the fault circuit
*Support for RS-485 communication,modbus-RTU protocol
*Support for swith input,output,analog transmitting output,electric energy impluse output
*Convenient installation, simple wiring, small workload
*Wide range AC/DC universal power supplies:AC/DC 80-270V
*To be completed by SCADA,PLC in a variety of communication software networking
Technical Index
Accuracy of measurement
*Voltage:level 0.5
*Current:level 0.5
*Active power:level 0.5
*Reactive power:level 0.5
*Power factor:level 0.5
*Frequency:±0.02Hz      ST96-3EY                ST96-3E
*Active electric energy:class 0.5s        
*Reactive electric energy:class 1 or class 2
Signal Input
*Connection Mode:three phase four wires,three phase three wires
*Rated Voltage:AC 57.7V,AC 100V,AC 220V,AC 380V
*Rated Current:AC 1A,AC 5A
*Overload:
      Voltage:1.2 times(continued),2 times/1second(instantaneous)   Current:1.2 times(continued),10 times/5second(instantaneous)      
*Power Consumption
      Voltage:<1VA per phase
      Current:<0.4VA per phase
*Impedance
      Voltage:>300KΩ
      Current:<20mΩ
*Frequency:45~60Hz
Accessory Power Supply
*Working Range:AC/DC 80-270V
*Power Consumption:<4VA
Function Module
*Communication Interface:1 way RS-485 communication,modbus-RTU protocol
*Baud Rate:2400~9600bps,the default is 9600bps
*Switch Input:4 ways
*Switch Onput:3 ways(capacity:AC 250V/1A,DC 30V/5A)
*Transmission Onput:3 ways(analog Onput:0/4~20mA or 0~5/10V)
*Electric energy pulse output:2 ways(constant:3200imp/kwh(kvarh))
Work environment
*Working Temperature:-10ºC~+55ºC
*Storage Temperature:-25ºC~+70ºC
*Relative Humidity:≤93ºC,no corrosive gas
*Altitude:≤2500m
Safety
*Insulation Resistance:>100MΩ
*Ac Electric:AC 2KV
Emc Performance
*ESD Electrostatic Discharge:class 4
*Electrical Fast Transient Burst:class 4
*Surge(impact):class 4