China Supplier Three Phase Digital Current Volt Frequency Meter Energy Meter

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      LST96-3EY                LST96-3E

*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:-10℃~+55℃

*Storage Temperature:-25℃~+70℃

*Relative Humidity:≤93℃,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

Terminal diagram

Basic power measurement+Swith output+Analog transmitting output

Note:If the wiring diagram on the instrument case is inconsistent, please use the instrument case

2)Basic power measurement+Swith input+Swith output

Note:If the wiring diagram on the instrument case is inconsistent, please use the instrument case

typical signal wiring diagram

Example 1:

  Model:LST12-3E

  Frame Size(mm):120*120

  Power supply:AC220V/50Hz

  Signal input:three phase four wires, AC 3*220/380v, AC 100A/5A

  Other:Factory settings(Not specified in accordance with the default settings factory)