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Jiangsu acrel Electric Appliance Manufacturing Co., Ltd. is acrel Electric Co., Ltd. (Securities Code: 300286 SZ.) its wholly-owned subsidiary is the production base of acrel series of products such as power collection, power monitoring, power management, electrical safety, low voltage protection, intelligent photovoltaic, etc. The company is located in Jiangyin city, Jiangsu province, and is a pilot enterprise of two-oriented integration in Jiangsu province. It has a product test center and can carry out various tests such as environment, EMC electron magnetic compatibility, safety and reliability. Relying on the information management system and strict implementation of ISO9001 management standards, the production process provides guarantee for the industrialization and large-scale implementation of products. The annual production capacity of instruments is 2 million, and 1.5 million power transformers, 10000 sets of energy-saving cabinets. Acrel energy efficiency management system includes substation operation and maintenance cloud platform, safe power consumption management cloud platform, environmental protection power consumption supervision cloud platform, Prepaid management (system) Cloud Platform, Intelligent power transformation and distribution monitoring system, power quality management system, building energy consumption management system, industrial energy control platform, leakage fire monitoring system, fire power monitoring system, fire door monitoring, emergency lighting and evacuation indication system, charging pile accounting management system, data center dynamic ring monitoring system, intelligent lighting control system, IT distribution insulation monitoring system and related products. Business unit product line introduction Acrel Electric Energy Management business unit mainly focuses on: ACR multi-function power meter APM series network power meter rail energy meter prepaid energy meter wireless metering module active filter cabinet SVG static VAR generator and other products ACR series instruments can measure common power parameters, such as three-phase current, voltage, active, reactive power, electrical degree, harmonic, etc., and have perfect communication networking function, which is very suitable for real-time power monitoring system. APM series network power meter is designed according to IEC standards and has the functions of electricity measurement, electric energy statistics, power quality analysis, network communication, etc. It is mainly used for comprehensive monitoring and diagnosis of power supply quality of power grid and power management. This series of instruments adopt modular design. When customers need to add switching value input and output, read analog input output, SD card recording and Ethernet communication, they only need to insert the corresponding module in the back. DTSD series products adopt DIN35mm guide rail installation structure, which is compact in size and can measure electric energy and other electrical parameters, and can set parameters such as clock and rate period, with high precision, good reliability, the performance index meets the technical requirements of the national standard GB/T17215-2002, GB/T17883-1999 and the power industry standard DL/T614-2007 for electric energy meters, and has the power pulse output function; the RS485 communication interface can be used to exchange data with the host computer. AEM embedded installation electric energy meter integrates the measurement of electric power parameters, electric energy measurement and assessment management, and provides all kinds of electric energy data statistics on 24 hours, 31 days and 12 months. With switching value input and relay output, it can realize the functions of "remote communication" and "Remote Control", and has Alarm output. With RS485 communication interface and MODBUS-RTU protocol, it can be widely used in various control systems, SCADA systems and energy management systems. The electronic pre-paid power meter adopts the guide rail installation structure, and has the functions of pre-payment, load control, RS485 communication, etc. The Performance Index meets the GB/T18460.3-2001 standard. It is an ideal electric energy meter to reform the traditional electricity consumption system and improve the management level of electricity consumption. AEW100 wireless metering instrument is mainly used to measure three-phase active energy of low-voltage network, with RS485 communication and 470MHz wireless communication functions, which is convenient for users to monitor, copy and manage electricity consumption. ANAPF series active power filters collect system harmonic current through current transformer, and quickly calculate and extract the content of each harmonic current through controller to generate harmonic current instruction, the compensation current which is opposite to the harmonic current amplitude is generated by the power actuator and injected into the power system, thus canceling the harmonic current generated by the nonlinear load. ANSVG hybrid dynamic filter compensation device is connected to the power distribution system in parallel mode, and the current component of the system is monitored in real time. Through control calculation and logic change, the reactive power component and harmonic component required by the system are calculated, then, through the three-phase full-bridge converter circuit, the reactive power and harmonic current required by the system are generated in real time and injected into the distribution system to realize intelligent compensation and harmonic control.