Descriptions: The meter is full compliance with national standards GB/T17215.321-2008 and IEC62053 international standard of grade 1 level of the relevant technical requirements of the 3 phase KWh meter, which can directly and accurately measure active energy of the energy consumption , 6 digital display active energy consumption,It has the advantages of convenient meter reading, high reliability, small volume, light weight, beautiful appearance, advanced technology, and installation of 35mmDIN standard guide rail.It has good anti-electromagnetic interference, low power consumption, high accuracy, high overload, high stability, anti - theft and long life. Features: It has the advantages of convenient meter reading, high reliability, small volume, light weight, beautiful appearance, advanced technology. Installation of 35mmDIN standard guide rail. This meter is suitable for the measure the 3-phase AC efficient electrical energy of rated frequency 50Hz,used for fixed installation indoors. Apply to the environment temperature of - 25 ~ 55 , relative humidity is not more than 95%, and in the air without corrosive gases and avoid dust, mold, salt fog, condensation, insects, etc. It has good anti-electromagnetic interference, low power consumption, high accuracy, high overload, high stability, anti - theft and long life. Specifications: Standard: IEC62053-21 Display: 6-digit Color: White Voltage: 3 x 220/380V Current: 3 x 20(80A) Frequency: 50Hz Impulse constant: 400imp/kWh Operating Humidity: 95% Operating Temperature:-25 ~ 55 Size: Approx. 12 x 10 x 6.5cm/4.72 x 3.93 x 2.55inch Weight: 519g Installation and use: 1. Installation of energy meter required experienced electrician or professional, and determined to read the manual. 2. Energy meter should be installed in the indoor ventilated and dry place, adopt 35mmDIN standard guide type installation, the bottom plate of the electricity meter should be fixed in the wall that is strong refractory, and not easy to vibrate. 3. Electricity meters should be installed in protective cabinets in places where there are filth and potential damages. 4. Install according to the wiring diagram ,it is best to use a multi-strand copper wire to avoid the failure of the electrical energy meter working or burning down. 5. When the electricity meter is correctly connected to the power grid, the power indicator of the meter is light. 6. Electric energy meter should take the thunder protection measures when it is used in the area with more thunder, so as to avoid damaging the electric energy meter by thunder. 7. The load capacity of the energy meter is in the range of 0.05Ib ~ Imax (direct access) or 0.02Ib ~ Imax (through the access type of the transformer),Exceeding this load capacity will cause the meter to be inaccurate or current coil to burn. 8.When the energy meter is used in the transformer, it is the actual electricity consumption that must be multiplied by the transformer ratio after reading the power indicator 9. Data display: 6 digital display 10.Power instructions: A,B,C three LED indicates that the three-phase power supply is normal when the light is on. When a phase voltage is missing, the corresponding pressure indicator light is out. 11.PULSE indicator: when the PULSE indicator light is on, the power PULSE is detected. (when a sample signal is detected, the PULSE indicator lights up about 80ms). 12.Reverse phase power instruction: Rev. Indicates that the light is on in the direction of energy consumption. Outline diagram and wiring diagram: Method of measurement: The energy meter is equipped with photoelectric coupling power pulse test output port, is located in a wiring terminal box. Connect the test equipment 5VDC to the terminal of 17 (positive terminal), and the signal line connect to the terminal of 18 (negative terminal). Package Included: 1 x Energy Meter Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering