In modern electrical systems, the terms “electric meter” and “energy meter” are often used interchangeably, but they have distinct differences in definition and functionality. Understanding these differences is crucial for selecting the right device for specific applications, whether for industrial energy management, commercial facility monitoring, or residential power tracking. This article will clarify the core differences between electric meters and energy meters, and introduce the high-performance DM1750S-U (DTSU5333) Series Energy Meter from Zhejiang C&J Electrical co., ltd. (C&J Electrical), a reliable solution for accurate energy measurement.
Energy meters calculate the total energy consumed over time, usually in kilowatt-hours, while power meters measure instantaneous power usage. Energy meters focus on cumulative consumption, while power meters provide insight into current electrical demand and usage trends.
To further clarify, an electric meter is a general term for all devices that measure electrical quantities in a circuit. This broad category includes power meters (which measure real-time power in watts), voltmeters (for voltage), ammeters (for current), and more. An Energy Meter, however, is a specialized type of electric meter designed specifically to calculate the total electrical energy consumed over a period of time—typically measured in kilowatt-hours (kWh), the unit used for billing and energy tracking. The key takeaway: all energy meters are electric meters, but not all electric meters are energy meters. Energy meters prioritize cumulative data, making them essential for energy management, cost allocation, and efficiency optimization.
For businesses and industries seeking accurate, reliable energy measurement, C&J Electrical’s DM1750S-U (DTSU5333) Series Energy Meter stands out as a industry-leading solution. This rail-mounted three-phase four-wire electronic energy meter is engineered with advanced technology to meet the diverse needs of modern electrical systems.
Overview of C&J Electrical DM1750S-U (DTSU5333) Energy Meter
The DM1750S-U (DTSU5333) series is a rail-mounted three-phase four-wire electronic energy meter developed by C&J Electrical, integrating microelectronic technology, imported large-scale integrated circuits, advanced digital sampling processing technology, and SMT (Surface Mount Technology). It is a high-performance three-phase four-wire active energy meter whose performance fully complies with the relevant technical requirements of GB/T17215.321-2008 (Class 1 and Class 2 static AC active energy meters).
This Energy Meter accurately and directly measures the active energy consumption of loads in 50Hz or 60Hz three-phase AC power grids, making it suitable for a wide range of industrial and commercial applications. Equipped with a 7-digit LCD display, it clearly shows active power data for easy reading and monitoring. Additionally, it features both far-infrared and RS485 communication modules, enhancing its flexibility for data transmission. The meter boasts excellent reliability, a compact size, light weight, an attractive appearance, and easy installation—key advantages that make it a popular choice for energy management projects.
Core Functions & Product Advantages
The DM1750S-U (DTSU5333) Energy Meter is packed with practical features and advantages, designed to meet the highest standards of performance and usability:
1. Standard & Space-Saving Installation
- 35mm standard rail mounting according to DIN En50022 standard, ensuring seamless integration with standard control cabinets and distribution boxes.
- 10 pole width (modulus 12.5mm), in line with DIN43880 standard, minimizing space occupation and facilitating centralized installation in dense electrical panels.
2. Clear & Dual Display System
- Standard configuration includes a 5+1 digit counter and a 6+2 digit LCD display (99999.11 kWh), providing both permanent mechanical records and real-time digital readings for accurate energy tracking.
3. Comprehensive Data Measurement
Beyond measuring active energy consumption, this Energy Meter can also monitor reactive power, voltage, current, power, power factor, and frequency—providing a holistic view of electrical system performance and helping identify inefficiencies.
4. Flexible Time-of-Use Tariff Management
- Programmable 4 medium tariffs and 10 time periods, supporting multi-rate billing to adapt to different energy pricing policies.
- An external clock chip with calendar, timing, and annual automatic switching functions, automatically displaying the current total and time-sharing electric energy of each tariff for accurate cost allocation.
5. Versatile Communication Options
- Optional far-infrared data communication port and RS485 data communication port, with communication protocols complying with DL/T645-1997 and 2007, MODBUS-RTU, or other customized protocols—enabling seamless connection with various AMR (Automatic Meter Reading) systems and smart grid platforms.
6. Advanced Safety & Indication
- Automatically detects and indicates the flow direction of load current, ensuring accurate measurement regardless of the direction of load current flow, and fully complying with GB/T17215.321-2008 standard.
- 5 LED indicators to show power status (A, B, C phases), reverse power, and active energy pulse signal (red), providing clear visual feedback for easy monitoring.
- Standard U-shaped wiring and a short protective cover, reducing installation space, simplifying wiring, and enhancing safety during installation and maintenance.
- Standard configuration of passive electric energy pulse output (with polarity), easy to connect with various AMR systems, in line with IEC 62053-21 and DIN 43864 standards.
Technical Parameters
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Parameter
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Details
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Model
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DM1750S-U (DTSU5333) Series
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Precision
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Level 1
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Rated Voltage
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3×220/380V
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Rated Current
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1.5(6)A, 5(20)A, 10(40)A, 15(60)A, 20(80)A, 30(100)A
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Starting Current
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0.04% of Rated Current
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Insulation Properties
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Power frequency AC voltage 2kV for 1 minute; Impulse voltage 6kV
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Compliance Standards
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GB/T17215.321-2008, IEC 62053-21, DIN 43864, DIN En50022, DIN43880
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Application Scenarios
With its high accuracy, flexible functions, and compact design, the DM1750S-U (DTSU5333) Energy Meter is widely used in various industrial, commercial, and public utility scenarios, including:
- Industrial Factories: For energy measurement and cost allocation in production lines, workshops, and industrial equipment, helping enterprises optimize energy usage and reduce costs.
- Commercial Buildings: Shopping malls, office buildings, hotels, and hospitals—where accurate energy metering is essential for facility management and cost control.
- Power Distribution Systems: Transformer substations, distribution boxes, and smart grid projects, supporting remote data collection and centralized energy management.
- Public Utilities: Street lighting systems, community energy management, and public facility power monitoring, ensuring efficient energy utilization.
- OEM Projects: Compatible with various industrial control systems, supporting customization to meet the specific needs of equipment manufacturers.
Why Choose C&J Electrical DM1750S-U Energy Meter?
As a professional manufacturer of electrical components, C&J Electrical is committed to providing high-quality, reliable products that meet global standards. The DM1750S-U (DTSU5333) Energy Meter offers unique advantages that make it the preferred choice for customers worldwide:
- High Accuracy & Reliability: Complies with Class 1 precision standards and international safety regulations, ensuring accurate energy measurement even in harsh industrial environments.
- Flexible & Versatile: Multiple rated current options, communication protocols, and time-of-use tariff settings, adapting to diverse application needs.
- Easy Installation & Maintenance: Rail-mounted design, compact size, and clear indicators simplify installation and daily maintenance, reducing labor costs.
- OEM Customization: Supports OEM brand and model customization, allowing customers to tailor the product to their brand and market needs.
- Comprehensive Support: C&J Electrical provides professional technical consultation and after-sales service, ensuring a seamless user experience.
Get in Touch
If you have any questions about the DM1750S-U (DTSU5333) Energy Meter—including technical specifications, customization options, bulk orders, or application guidance—please feel free to contact C&J Electrical. We are dedicated to providing you with accurate, efficient, and safe energy measurement solutions that help you optimize energy management and reduce costs.
Post time: Mar-09-2026