DC Electronic Meter J5021-FF function
Main power supply power, equipment power, and line loss power measurement: It can accurately measure the main power input power, the power consumed by the equipment itself, and the power lost during line transmission, providing comprehensive data for power monitoring and management.
Bidirectional power indication: It has bidirectional power measurement and indication functions, which can clearly present the forward transmission and reverse feedback of power, and is suitable for bidirectional power flow scenarios.
Applicable to DC electric vehicle charging stations and any sub-item billing applications: It can accurately measure power at DC electric vehicle charging stations, and can also meet the needs of sub-item billing in different power consumption areas in shopping malls, factories and other places.
MID, PTB, CE and UL certification: It has passed MID (Measuring Instruments Directive), PTB (German Federal Institute of Physics and Technology), CE (European Conformity Assessment), and UL (Underwriters Laboratories) certification, indicating that the product meets international standards in terms of measurement and safety, and its quality and performance are authoritatively recognized.
Product Parameter
| Type | DC Electronic Meter J5021-FF |
| standards | EN 50470-4,IEC 62053-41,IEC 62052-31,UL61010-1,UL61010-2-030 |
| voltage | |
| umax | 1000V |
| Umin | 50V |
| current | |
| Minimum current Imin | 6.5A |
| Reference current In | 130A |
| Maximum current Imax | 650A |
| starting current lmin | 0.4%In |
| Accuracy | Class C |
| Pulsating Accuracy | LCD |
| Environment | |
| Temperature range | Operation:-40~80℃ |
| storage:-40-85℃ | |
| Protection Degree | IP 20 |
| Insulation Class | II |
| Typical power consumption | |
| voltage circuit power at un | <0.5W |
| current circuit power at Imax | <0.04w/A*Imax |
| LCD Display | Dot Matrix type,backlight supported |
| Auxiliary power supply |
<1W |
| Communication Interface | 3*RS485 port,up to921600bps |
| Weight of Meter | About0.5kg |
| Dimension(LxWxD) | 115.6x 107.2 x66.8mm |
Product Advantage
Wide Range & High Power
Supports 50–1000V DC and up to 650A current, ideal for solar, storage, and EV charging.
Precision & Efficiency
Class C accuracy with ultra-low power consumption, ensuring reliable and cost-effective operation.
Smart Communication
Equipped with 3× RS485 ports, high-speed data transfer up to 921600bps, easy system integration.
Robust & Compact
Works in extreme temperatures (-40℃ ~ +80℃) with a compact, lightweight design for flexible installation.
Application
Photovoltaic Systems
With a wide voltage range (50V–1000V) and high current capacity (up to 650A), they are particularly suitable for energy metering and monitoring in photovoltaic DC circuits.
01
DC Fast Chargers for EVs
With a wide operating temperature range (-40°C–+80°C), they can withstand extreme outdoor environments. Their high Class C accuracy ensures billing and data monitoring during DC fast charging for electric vehicles.
02
DC Distribution Systems
Widely used in DC power supply for data centers and communication base station DC power supply systems; supports RS485 communication interface and can be easily connected to energy management systems.
03
Industrial DC Systems:
Suitable for use in high-power DC applications such as metallurgy, chemical engineering, electrolysis, and electroplating, for energy metering and energy efficiency management.
04
DC Electronic Meter manufacturer
Headquartered in China, the company also maintains multiple R&D and production sites in Europe and Asia. Its products are sold in over 40 countries worldwide, truly fulfilling its strategic vision of "Based in China, Serving the World."
The company is equipped with a professional testing laboratory compliant with ISO/IEC 17025 standards to ensure that every product withstands rigorous testing and market scrutiny.
Services We Can Provide To Buyers
● Fast Response – Reply within 24 hours with professional technical support.
● Customized Solutions – OEM/ODM available to meet diverse project needs.
● Quality Assurance – Strict testing and international certifications (CE/UL/ISO).
● Flexible Supply – Sufficient stock, reliable lead time, and global delivery.
● After-Sales Support – 1–2 years warranty, remote technical assistance, and long-term partnership.
● Comprehensive Documentation – Detailed datasheets, manuals, and installation guides provided.
● Industry Expertise – Over 15+ years of manufacturing experience in electronic meters.
● Global References – Widely used in EV charging, solar, and energy storage projects worldwide.
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Honor and qualification
FAQ
1. What is the operating voltage range of this DC electronic meter?
The meter operates from 50V to 1000V DC, making it suitable for a wide range of applications.
2. What is the maximum current capacity of this meter?
The maximum current (Imax) is 650A, with a reference current (In) of 130A.
3. What is the minimum starting current of this meter?
The starting current is 0.4% of In, ensuring high sensitivity for low current detection.
4. What accuracy class does this meter comply with?
It complies with Class C accuracy, ensuring reliable and precise measurements.
5. What display type is used for data reading?
The meter uses an LCD dot matrix display with backlight support for clear visibility.
6. What is the communication interface available?
It supports 3× RS485 ports with data rates up to 921600bps, making it compatible with various monitoring systems.
7. What are the protection and insulation levels?
The meter has a protection degree of IP20 and insulation class II.
8. What is the operating temperature range?
It can operate from -40°C to +80°C and withstand storage conditions from -40°C to +85°C.
9. What is the typical power consumption of this meter?
The power consumption is very low, less than 0.5W in voltage circuits and less than 0.04W/A × Imax in current circuits.
10. What are the dimensions and weight of the meter?
The meter measures 115.6 × 107.2 × 66.8 mm and weighs about 0.5 kg, making it compact and lightweight.
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