In the field of electrical energy measurement, Energy Meter is an indispensable device for recording power consumption, which provides accurate data support for energy management, cost control and power supply optimization. Among various types of energy meters, single phase energy meter is the most widely used one in daily life and small and medium-sized electrical scenarios. But many users and practitioners still have questions: What is a single-phase energy meter? What are its characteristics and application scenarios? This article will systematically explain the definition, working principle and core value of single phase energy meter, integrate the required explanatory paragraph, and focus on introducing the DDSU5333 series 18mm rail-mounted digital energy meter launched by Zhejiang C&J Electrical co., ltd. (C&J Electrical)—a high-performance single phase energy meter with compact design, complete functions and high accuracy, which meets the diverse measurement needs of various scenarios.
First of all, we need to clarify the basic definition and core functions of asingle phase energy meter. A single phase meter also referred to as credit meters, KWh meters, or check meters are electrical meters designed for use in measuring the power consumption in a single-phase power supply. These meters, however, only deal with Alternating current (AC power) supply and not the Direct current (DC) power. Simply put, a single phase energy meter is a specialized Energy Meter used to measure the active energy consumption of electrical equipment in a single-phase AC power grid (50Hz or 60Hz). It is mainly used in scenarios with small power load, such as residential buildings, small commercial stores, small offices and household electrical equipment, which is an important part of the low-voltage power measurement system[6][7].
Compared with three-phase energy meters used in industrial high-power scenarios, single phase energy meter has the characteristics of small size, simple structure, easy installation and low cost, and its measurement accuracy can fully meet the needs of daily and small-scale power consumption measurement[6]. With the continuous development of electronic technology, traditional mechanical energy meters are gradually replaced by digital energy meter. The digital energy meter adopts advanced microelectronic technology and digital sampling processing technology, which has higher measurement accuracy, more comprehensive functions and more convenient data reading and transmission, becoming the mainstream choice in the current Energy Meter market[4].
C&J Electrical, focusing on the R&D and production of electrical measurement equipment, has launched the DDSU5333 series rail-mounted single-phase electronic energy meter to meet the market demand for high-performance, compact single phase energy meter. As a high-quality digital energy meter, this product integrates advanced technologies and excellent performance, and is widely recognized in the market. Next, we will introduce the product overview, functions and features, application scenarios and product advantages of the DDSU5333 series 18mm single phase energy meter in detail.
Overview of C&J Electrical DDSU5333 18mm Single-phase Energy Meter (Digital Energy Meter)
The DDSU5333 series rail-mounted single-phase electronic energy meter is a high-performance single phase energy meter independently developed and produced by C&J Electrical. It adopts microelectronic technology and imported large-scale integrated circuits, and applies advanced digital sampling processing technology and SMT technology. This digital energy meter is a new type of single-phase two-wire active energy meter with a smaller volume, and its performance fully complies with the relevant technical requirements of GB/T17215.321-2008 (Class 1 and Class 2 static AC active energy meters)[3][8].
The most prominent feature of this single phase energy meter is its ultra-compact design, with a single pole width (modulus) of only 18mm, which is in line with the DIN43880 standard. This compact size greatly saves the installation space, making it suitable for installation in narrow distribution boxes and distribution panels, especially for scenarios where the installation space is limited[7]. At the same time, the product has the characteristics of good reliability, light weight, beautiful appearance and easy installation, which can effectively reduce the difficulty of on-site installation and maintenance[2].
As a professional digital energy meter, the DDSU5333 series can accurately and directly measure the active energy consumption of the load in the 50Hz or 60Hz single-phase AC power grid. It can select the counter and LCD display active power, and is equipped with a variety of practical functions, which can meet the measurement and management needs of different users. Whether it is for household use, small commercial use or industrial auxiliary measurement, this single phase energy meter can provide reliable data support[4][7].
Functions and Features of DDSU5333 18mm Single-phase Digital Energy Meter
The DDSU5333 series single phase energy meter is a high-performance digital energy meter with complete functions and excellent performance. Its detailed functions and features are closely combined with practical application needs, complying with international and national standards, and providing users with comprehensive measurement solutions. The specific functions and features are as follows:
- Standard Rail Installation: It adopts 35mm standard rail installation, which is in line with the DIN EN50022 standard. It can be directly installed on the standard DIN rail in the distribution box, without drilling and complex fixing, which is convenient for installation and disassembly, and suitable for batch construction and rapid transformation[2][7].
- Ultra-compact 18mm Design: The single pole width (modulus) is 18mm, which is in line with the DIN43880 standard. The compact size saves installation space, making it suitable for narrow installation environments such as small distribution boxes and terminal distribution loops[7].
- Clear Digital Display: The standard configuration is 5+1 digit display (9999999.1 kWh), which is displayed by stepping motor pulse counter and LCD display. The digital display is clear and intuitive, which is convenient for users to read the power consumption data accurately, avoiding the reading error of traditional mechanical meters[4].
- Standard Pulse Output: It is equipped with standard passive electric energy pulse output (with polarity), which is easy to connect with various AMR (Automatic Meter Reading) systems, and complies with IEC62053-21 and DIN43864 standards. It can realize automatic data collection and remote抄表, improving the efficiency of meter reading and reducing manual costs[1][4].
- Dual-color LED Indicator: The dual-color LED indicator light indicates the power status (green) and electric energy pulse signal (red). Users can intuitively judge the working status of the Energy Meter through the indicator light, which is convenient for daily inspection and fault diagnosis[4].
- Current Direction Detection: It can automatically detect the flow direction of the load current and indicate it. When only the red electric energy pulse signal is working and there is no green power supply indication, it means that the flow direction of the load current is opposite, which helps users find abnormal power consumption in time[4].
- Optional Communication Port: RS485 data communication port can be selected, and the communication protocol supports standard DL/T645-1997 or MODBUS-RTU, or other communication protocols can be selected. It can be seamlessly integrated into the energy management system, realizing remote monitoring, data analysis and centralized management of power consumption[5][7].
- Multi-parameter Measurement: It can measure active power, voltage, current, power, power factor, frequency and other data, providing comprehensive power parameter information for users, which is convenient for users to understand the power consumption status and optimize energy use[4][6].
- Accurate Energy Measurement: It measures the active electric energy consumption of single-phase two-wire in one direction, regardless of the flow direction of the load current. Its performance fully complies with the GB/T17215.321-2008 standard, ensuring the accuracy and fairness of measurement[3][8].
- Convenient Wiring: It adopts direct connection type, and the standard configuration is S-type wiring, which is simple and convenient for wiring, reducing the difficulty of on-site installation and improving the installation efficiency[4].
- Safe Protection Design: It is equipped with an extended terminal cover to protect electricity safety, effectively preventing electric shock accidents caused by accidental contact with terminals, and ensuring the safe operation of the Energy Meter and the safety of operators[2].
Application Scenarios of DDSU5333 18mm Single-phase Energy Meter
With the advantages of compact size, complete functions, high accuracy and easy installation, the DDSU5333 series single phase energy meter (digital energy meter) has a wide range of application scenarios, covering residential, commercial, industrial and other fields. It can meet the measurement needs of different scenarios and provide reliable Energy Meter solutions for users. The specific application scenarios are as follows:
- Residential Scenarios: It is widely used in residential buildings, villas, apartments and other residential places, used to measure the power consumption of household electrical equipment (such as air conditioners, refrigerators, lights, etc.). The compact 18mm design is suitable for installation in household distribution boxes, and the clear digital display is convenient for residents to check their power consumption and control electricity costs[6][7].
- Small Commercial Scenarios: Applied to small commercial places such as convenience stores, small supermarkets, barber shops, and small restaurants, used to measure the power consumption of commercial equipment. The multi-parameter measurement function can help merchants understand the power consumption status of equipment, optimize the use of electrical equipment, and reduce operating costs[2][6].
- Office Scenarios: Suitable for small offices, home offices and other places, used to measure the power consumption of office equipment (such as computers, printers, air conditioners, etc.). The optional RS485 communication port can realize centralized management of power consumption in multiple offices, facilitating the energy management of enterprises[4][7].
- Industrial Auxiliary Scenarios: Used in small industrial workshops, production lines and other places, used for auxiliary measurement of power consumption of small power equipment. The high accuracy and stable performance can ensure the accuracy of auxiliary measurement, providing data support for enterprise energy statistics and cost control[2][7].
- Terminal Distribution Scenarios: Applied to terminal distribution loops of buildings, factories and public facilities, used to measure the power consumption of each branch loop. The compact size and standard rail installation make it easy to install in the terminal distribution box, realizing refined energy management of the distribution system[2][7].
- OEM Supporting Scenarios: Suitable for OEM supporting, can be integrated into various electrical equipment and distribution cabinets, providing professional power measurement functions for the equipment. Multiple specifications can be flexibly matched with different OEM products, improving the added value and competitiveness of the whole equipment[4][7].
Product Advantages of DDSU5333 18mm Single-phase Digital Energy Meter
In the competitive Energy Meter market, the DDSU5333 series single phase energy meter from C&J Electrical has obvious advantages, relying on its excellent performance, compact design and complete functions, and has won the trust of users. Compared with ordinary single phase energy meter and digital energy meter products on the market, its specific advantages are as follows:
- Ultra-compact Design: With a single pole width of only 18mm, it is one of the single phase energy meter with smaller volume in the market. It saves installation space and is suitable for various narrow installation environments, solving the problem of insufficient installation space in small distribution boxes[7].
- High Measurement Accuracy: It adopts advanced digital sampling processing technology and imported large-scale integrated circuits, and its performance fully complies with the GB/T17215.321-2008 standard (Class 1 and Class 2). It can accurately measure the active energy consumption, ensuring the accuracy and reliability of measurement data[3][8].
- Complete Functions: It integrates multiple practical functions such as multi-parameter measurement, current direction detection, pulse output, and optional communication port, which can meet the diverse needs of users for power measurement and management, and is more versatile than ordinary Energy Meter[4][7].
- Easy Installation and Maintenance: It adopts 35mm standard rail installation and S-type wiring, which is simple and convenient for installation and disassembly. The beautiful appearance and light weight also reduce the difficulty of on-site maintenance[2][7].
- High Safety Performance: The extended terminal cover design effectively protects electricity safety, preventing electric shock accidents. The product is made of high-quality materials, with good insulation performance and stable operation, ensuring long-term safe use[2].
- Wide Compatibility: It complies with international and national standards such as DIN EN50022, DIN43880, IEC62053-21, DIN43864 and GB/T17215.321-2008, and supports multiple communication protocols, which is compatible with various AMR systems and energy management systems[1][3][8].
- Multiple Specifications Optional: There are multiple specifications available to meet the measurement needs of different voltage and current levels, and the selection is flexible, suitable for various application scenarios[4].
- OEM Customization Support: We support OEM brand customization services, which can be customized according to the specific needs of users, including brand LOGO, product specifications and functions, to meet the personalized needs of different users and OEM partners[4][7].
Why Choose C&J Electrical DDSU5333 18mm Single-phase Energy Meter?
As a professional manufacturer of electrical measurement equipment, C&J Electrical has rich experience in R&D and production of Energy Meter. The DDSU5333 series 18mm single phase energy meter is produced through strict quality control and testing procedures, ensuring that each product meets relevant standards and has stable and reliable performance. The product has a wide range of application scenarios, high safety performance and complete functions, which can provide comprehensive and reliable power measurement solutions for users in various fields[4][7].
Compared with other single phase energy meter products on the market, the DDSU5333 series has obvious advantages in size, accuracy and functions. Its ultra-compact 18mm design solves the problem of insufficient installation space; the high-precision measurement ensures the accuracy of power consumption data; the complete functions meet the diverse needs of users; and the OEM customization service can better meet the personalized needs of users and partners[2][7].
In addition, we provide perfect after-sales service and technical support. If you have any questions about the selection, installation, use or customization of the DDSU5333 series single phase energy meter and digital energy meter, please feel free to contact C&J Electrical. Our professional technical team will provide you with tailored solutions and reliable technical support to ensure that the product can play its best performance and meet your power measurement needs.
Post time: Apr-17-2026