Product Overview 
 HS301 series three-phase intelligent power meters are widely used in various industries for the electrical locations of the places of power distribution, automation, and intelligent network monitoring system, you can choose to measure current, voltage, active power, reactive power, power factor, frequency, active energy reactive energy and power parameters, this product has a variety of extended auxiliary function, temperature and humidity monitoring, the switching state of switch inputs, control the switching of the relay output, as well as with the RS485 433M wireless, SMS, etc. variety of communication interfaces, the user can select the appropriate function depending on the application. 

 Performance characteristics 
 ◆ Switch power supply, AC and DC power supply 
 ◆ single electrical parameters and a variety of electrical parameters measurement unit is optional 
 ◆ with environmental temperature and humidity monitoring and regulation functions, and statistical day, month, average temperature and humidity, the record date, month, the maximum temperature time 
 ◆ a variety of auxiliary functions optional 
 ◆ arbitrarily set the PT and CT ratio 
 ◆ LED display or LCD display optional 
 ◆ multi-rate statistical functions 
 ◆ active and reactive energy can be divided into positive and negative to be measured separately 
 ◆ variety of communication interfaces, modular design, flexible configuration according to the needs of users 
 ◆ the MODBUS-RTU protocol, DL / T 645, the the IEC1107 a variety of communication protocols optional 
 Installation: panel embedded installation, Dimensions: 96 * 96mm hole size: 90 * 90mm 

 Technical indicators: 
 ◆ Input rated voltage: AC100V/57.7V AC380V/220V 
 ◆ Input rated current: 1A or 5A 
 ◆ Accuracy: 0.5S 
 ◆ the relay output: AC250V/5A DC30V/5A 
 ◆ Working power: AC/DC220V 
 ◆ Dielectric Strength: 2KV/min 
 ◆ Insulation resistance: ≥ 50MΩ 
 ◆ Working temperature: -35 ° C to +70 ° C 
 ◆ Storage Temperature: -40 ° C to +70 ° C 
 ◆ Relative humidity: 5% ~ 95%