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As a dedicated manufacturer of precision electrical components, Jinhua Dika Electrical Equipment leverages its expertise to deliver reliable current sensing solutions critical for modern renewable energy and electric vehicle infrastructure. Our current sensors are engineered specifically for the demanding environments of solar inverters and EV chargers, providing accurate, isolated current measurement that is essential for system efficiency, safety, and control. We understand that precise current monitoring is the backbone of power conversion and battery management, and our products are built to deliver consistent performance under variable loads and harsh conditions. With a focus on quality and reliability, we support the global transition to sustainable energy by providing components that system integrators and OEMs can trust.
Our current sensors utilize advanced Hall-effect technology to provide non-intrusive, galvanically isolated measurement of DC and AC currents. This design is crucial for applications where safety, accuracy, and minimal power loss are paramount.
- High Accuracy and Linearity: The closed-loop Hall effect design ensures excellent linearity and minimal temperature drift, providing accurate readings across the entire operating range, which is vital for maximum power point tracking (MPPT) in solar inverters and precise state-of-charge calculations in EV chargers.
- Galvanic Isolation: A key safety feature, the sensor provides high-voltage isolation between the primary current-carrying conductor and the secondary measurement circuit. This protects sensitive control electronics from high-voltage transients and faults.
- Wide Bandwidth and Fast Response: Designed to capture rapid current fluctuations, these sensors feature a wide frequency bandwidth and fast response time, enabling effective monitoring of switching harmonics in inverters and sudden load changes in chargers.
- Low Power Loss: The non-intrusive sensing principle means virtually zero power loss is added to the measured circuit, contributing to higher overall system efficiency.
- Robust Construction: Built to withstand industrial and outdoor environments, the sensors feature robust housings and are rated for wide operating temperature ranges, ensuring long-term reliability.
- Flexible Output Options: Available with various output signals to interface seamlessly with different control systems, including analog voltage (e.g., 0-5V, ±5V), analog current (e.g., 4-20mA), and digital interfaces (e.g., I2C, SPI) upon request.
Below is a summary of typical technical specifications for our standard series:
| Parameter | Specification |
|---|---|
| Primary Current (IPN) | 50A, 100A, 200A, 300A, 500A (Custom ranges available) |
| Output Signal | ±5V DC, 0-5V DC, 4-20mA (Selectable) |
| Supply Voltage (VS) | ±12V...±15V DC or +5V DC (Model dependent) |
| Accuracy (@25°C, IPN) | Typically ≤ ±0.7% to ≤ ±1% |
| Linearity Error | |
| Response Time | |
| Isolation Voltage | 2.5kV AC / 50Hz / 1 minute |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -40°C to +105°C |
The benefits for your application are significant. For solar inverter manufacturers, our sensors enable precise current feedback for the inverter's control algorithm, optimizing energy harvest from photovoltaic panels and ensuring safe grid connection. For EV charger producers, they provide reliable current measurement for charging control, cable fault detection, and billing accuracy. The high isolation enhances system safety certification potential, while the robust design reduces field failure rates and maintenance costs.
Jinhua Dika Electrical Equipment operates with a firm commitment to quality and international standards. Our manufacturing processes are supported by a comprehensive quality management system. We serve a global clientele across North America, Europe, Asia, and Oceania, with an annual export value reflecting strong market trust. Our products are shipped from major Chinese ports like Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring efficient logistics. This global footprint and institutional commitment to quality mean you are partnering with a reliable supplier capable of supporting your projects from prototype to high-volume production. Let our precision current sensors be the reliable core of your next-generation solar inverter or EV charging station. Contact us today to discuss your specific requirements and request samples.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between open-loop and closed-loop Hall effect sensors, and which does your product use?
A1: Closed-loop (or zero-flux) sensors use a compensation winding to null the magnetic field in the core, resulting in higher accuracy, better linearity, and faster response compared to open-loop types. Our sensors for critical applications like inverters and chargers primarily utilize the closed-loop design for superior performance.
Q2: Can your sensor measure both AC and DC currents?
A2: Yes. Hall effect-based current sensors are inherently capable of measuring both DC and AC currents, making them perfectly suited for the mixed current profiles found in solar inverters (DC from panels, AC to grid) and EV chargers.
Q3: How do I select the right current rating for my application?
A3: Choose a sensor with a nominal primary current (IPN) rating that is equal to or slightly higher than the maximum continuous current expected in your system. It's also important to consider overload and surge current requirements. We can advise on selection based on your specific design parameters.
Q4: What are the mounting options available?
A4: We offer various mounting solutions to fit different design needs, including PCB mount for integrated controller boards, panel mount for standalone installation, and through-hole designs for busbar integration. The specific options depend on the model and current rating.
Q5: Is external signal conditioning required for your sensor's output?
A5: Typically, no. Our sensors provide a conditioned, low-noise output signal (e.g., voltage or current) that can be directly connected to an analog-to-digital converter (ADC) on a microcontroller or a PLC analog input module. Some digital-output models provide directly readable data.
Q6: How does the sensor perform in environments with strong external magnetic fields?
A6: Our closed-loop sensors are designed with magnetic shielding and core materials that offer good immunity to external DC and low-frequency AC magnetic fields. For applications with extreme electromagnetic interference (EMI), specifying additional shielding or selecting models with enhanced immunity is recommended.
Q7: Do you offer custom designs for specific voltage, output, or mechanical requirements?
A7: Yes. As a manufacturer, we have the capability to customize various parameters including primary current range, supply voltage, output signal type and range, connector type, and mechanical dimensions to meet unique application needs. Please contact us with your specifications.
Q8: What is the typical lead time for samples and production orders?
A8: Sample lead time is generally short, depending on model availability. For production orders, lead times vary based on order quantity and customization level. We maintain efficient production planning to meet our global customers' project timelines and can provide specific schedules upon inquiry.
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