Ankerui multifunctional three-phase energy meter

Description :

　　Summary:This article introduces the characteristics and application scenarios of the APM830 power quality monitoring instrument, explains the application of the instrument in the power monitoring system, and elaborates on the advantages of using network power instruments in the control system: it can achieve real-time measurement of the full lighting parameters of the power load, and its complete power metering and power quality analysis functions can be applied to various power monitoring and energy management systems. The product adopts a dot matrix LCD screen and provides a full Chinese/English display interface; The expansion function adopts modular design, which makes the functional configuration more abundant. The APM830 power quality monitoring instrument is suitable for industries such as civil construction, industry, infrastructure, commercial buildings, and energy. It is suitable for high and low voltage distribution systems that require comprehensive monitoring of various operating parameters.

　　Keywords: power quality monitoring; Power monitoring;

　　0 Product Recommendations

　　APM is designed according to IEC international standards and has functions such as full power measurement, power statistics, power quality analysis, waveform recording, event recording (including voltage rise and fall interruption, impulse current recording, etc.), and network communication. It is mainly used for comprehensive monitoring of power supply quality in the power grid. This series of instruments adopts a modular design, combined with feature rich external DI/DO modules, AI/AO modules, TF card event recording modules, and network communication modules, which can flexibly achieve full power measurement and switch status monitoring of electrical circuits. The dual RS485 and Ethernet interfaces can achieve RS485 master station data copying, eliminating the need for data switches. The PROFIBUS-DP interface can achieve high-speed data transmission and networking functions.

　　1 Product Application

　　Energy and Energy Efficiency Management System

　　● Building or factory automation systems

　　Factory power system automation and load control

　　Industrial enterprise power supply and distribution automation system

　　2 Product Features

　　Designed according to IEC standards (IEC60068-2, IEC 61000-4, IEC 61557-12, IEC 62053-22, etc.).

　　● It integrates multiple functions such as basic electrical parameter measurement, real-time analysis of imbalance, deviation, three-phase voltage angle, three-phase current angle, energy statistics, demand statistics, extreme value recording, alarm recording, SOE event recording, etc.

　　Power quality analysis, harmonic measurement, total harmonic content of three-phase voltage and current, odd and even harmonic content, sub harmonic content (2-63 times), voltage peak coefficient, telephone waveform factor, current K coefficient (only supported by APM810).

　　Wave recording can be used for fault recording, trigger recording, manual recording, and timed recording.

　　The transformation ratio is set to a primary value and a secondary value (to avoid non integer multiples).

　　The RS485 interface supports Modbus RTU protocol and DL/T645 (2007) protocol, and can be extended to a second RS485 interface as a Modbus master. With Ethernet interface, it can be used as a simple serial server.

　　● Scalable Ethernet interface, supporting Modbus TCP, HTTP, DHCP protocols, realizing Ethernet networking, Ethernet automatic web pages, and can directly monitor data through a browser.

　　● Expandable Profibus interface, supporting Profibus protocol to meet high-speed communication requirements.

　　● Expandable TF card storage module, supports 32GB, comes standard with 4G, supports extended storage for alarm and event records, and supports timed recording of electrical parameters and energy data for easy operation and maintenance analysis. The data of TF card is stored in Excel format, including electrical parameters, electrical energy, event records, alarm records, etc. The storage interval time can be configured, with a storage time of 1 minute for electrical parameters and 1 hour for electrical energy.

　　The analog input function can be used as a reverse display meter (i.e. three-phase electrical measurement+8-channel reverse display).

　　The auxiliary power supply can be AC/DC 85-265V or wider 115-415V, meeting the requirement of 380V line voltage for power supply connection.

　　● Protection level IP54.

　　● Passed electromagnetic compatibility test (severity level 4).

　　3 Product Selection

　　4 Customer Q&A

　　5 Network Comparison

　　Traditional RS485 networking solution:

　　Figure 1

　　When using APM series instruments (extended external network modules), the micro network networking solution (supporting up to 32 slave stations):

　　Figure 2

　　After comparison, when using the APM830 power quality monitoring instrument (extended Ethernet module) for networking (micro network), a serial communication server can be omitted.

　　6 Case Studies

　　Modern times are gradually developing towards integration, with complex functional areas and large building scales. Various advanced medical and electromechanical equipment have also emerged in large numbers with the advancement of medical technology. These changes and developments have put forward higher requirements for the safety, reliability, and ease of maintenance of building power supply and distribution systems. Most of the electrical loads are primary and secondary loads, which require high continuity and reliability of power supply. The air conditioning system equipment is the main power consuming device and requires focused management of electricity usage; Class 2 medical facilities have high requirements for power supply continuity and reliability, and require comprehensive monitoring; The host of important medical technology laboratory equipment is sensitive to power quality and requires special attention.

　　Ensure the safety, reliability, and high quality of the power supply and distribution system, and guarantee a safe medical environment for patients. Reliable electricity support and optimized operating costs.

　　subway station

　　The operation of the subway heavily relies on electricity. However, the complex and massive structure of the power supply and distribution system, as well as the frequent use of various new equipment such as control and energy-saving lamps, have increased hidden dangers, power outage risks, maintenance workload, and management difficulties; At the same time, the cost of electricity and system maintenance increases year by year with the aging of equipment, making energy-saving tasks even more challenging.

　　The schematic diagram of the control principle is shown in Figure 2:

　　Control Theory

　　The renovated control system mainly has the following advantages:

　　(1) Effective reduction of renovation time: Due to factors such as a large number of equipment and short maintenance time, the adoption of the new plan has reduced the number of cable connections inside the cabinet and on-site construction, effectively shortening the renovation time.

　　The effect after renovation

　　(1) Comprehensively monitor the operation of the system, promptly detect hidden dangers and faults, avoid power outages, and ensure safe operation of work.

　　(2) High energy consumption analysis to improve system reliability.

　　(3) Eliminating the safety hazards caused by live measurement data of personnel and providing safety guarantees for operators.

　　7 Conclusion

　　Improving the efficiency of production control systems, optimizing the utilization rate of production equipment, and increasing equipment productivity are requirements for achieving enterprise profitability. Based on the intelligent monitoring, protection, and control system of intelligent motors, historical curves are obtained through online monitoring data, which improves the ability to judge and analyze equipment failures. The reliability and comprehensiveness are far higher than traditional solutions, breaking through the bottleneck that restricts enterprises from continuously optimizing automation control capabilities, improving productivity, and market competitiveness.

　　An electric energy meter is an instrument used to measure electrical energy, also known as an electricity meter, a fire meter, or a kilowatt hour meter. It refers to an instrument used to measure various electrical quantities, commonly known as an electricity meter or a fire meter.

　　By purpose: Industrial and Civil Tables, Electronic Standard Tables, Demand Tables, Multiple Rate Tables

　　According to structure and working principle: Inductive (mechanical), Static (electronic), Mechatronics (hybrid)

　　According to the nature of the connected power source: AC meter, DC meter

　　According to accuracy level: commonly used ordinary tables: 0.2S, 0.5S, 0.2, 0.5, 1.0, 2.0, etc

　　Standard tables: 0.01, 0.05, 0.2, 0.5, etc

　　According to installation and wiring methods: direct access type, indirect access type

　　According to electrical equipment: single-phase, three-phase three wire, three-phase four wire energy meter.

AfterSalesService :

• Multi functional three-phase energy meter