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As a professional manufacturer of electrical measurement and control equipment, Jinhua Dika Electrical Equipment Co., Ltd. is dedicated to providing reliable and accurate solutions for modern energy management systems. Our Acrel Open Loop Current Sensor 500A is engineered to deliver precise current measurement, forming a critical component for effective energy monitoring, load analysis, and power quality assessment. This sensor is designed for seamless integration into a wide range of industrial and commercial applications, helping businesses track consumption, optimize operations, and reduce costs. With a focus on stability and durability, it serves as a trustworthy data acquisition point for building automation, renewable energy systems, and smart grid infrastructure.
This current sensor utilizes the open-loop Hall effect principle, offering a non-intrusive and isolated method for measuring alternating current. Its design provides several distinct advantages for system integrators and end-users.
- High Reliability and Stability: The open-loop technology ensures long-term operational stability with minimal zero drift and temperature drift, providing consistent measurement accuracy over its lifespan.
- Excellent Electrical Isolation: The primary current circuit and secondary measurement circuit are electrically isolated, enhancing safety for both equipment and personnel by preventing high-voltage hazards on the low-voltage side.
- Wide Measurement Range and Good Linearity: Capable of accurately measuring currents from a small fraction up to the rated 500A, it maintains good linearity across its operating range for reliable data.
- Compact and Easy Installation: Its design allows for straightforward installation around the current-carrying conductor without the need to break the circuit, minimizing downtime during setup or maintenance.
- Low Power Consumption: The sensor itself consumes very little power, making it suitable for energy-efficient systems and applications where power availability is a constraint.
- Robust Construction: Built to withstand typical industrial environments, it offers resistance to vibration, humidity, and electromagnetic interference.
The technical specifications of the Acrel Open Loop Current Sensor 500A are detailed below to help with system design and selection.
| Parameter | Specification / Value |
|---|---|
| Rated Primary Current (IPN) | 500A AC |
| Measuring Range | 0 ~ 500A AC (Can be customized for higher ranges) |
| Output Signal (Standard) | 4-20mA / 0-5V DC / 0-10V DC (Selectable) |
| Accuracy (at 25°C, IPN) | ±1.0% |
| Response Time | < 10 μs |
| Bandwidth (-3dB) | DC ~ 20 kHz |
| Operating Temperature Range | -25°C ~ +70°C |
| Storage Temperature Range | -40°C ~ +85°C |
| Supply Voltage (VS) | +12V DC or +24V DC (±10%) |
| Isolation Voltage | 3 kV AC / 50 Hz / 1 min |
| Aperture Size (Inner Diameter) | Approx. 20mm x 12mm (Customizable) |
For clients, the primary benefit is gaining actionable insights into energy usage. By accurately monitoring current flow on feeders, motors, or entire distribution panels, facility managers can identify inefficient equipment, detect abnormal loads, and verify the performance of energy-saving measures. The sensor's standard analog outputs make it compatible with most PLCs, energy meters, data loggers, and SCADA systems, simplifying integration into new or existing monitoring networks. This translates into direct cost savings through preventive maintenance, optimized load scheduling, and validated utility billing.
Jinhua Dika Electrical Equipment operates with a commitment to quality, supported by a structured management system. Our products are designed and manufactured to meet the demands of a global clientele, with annual export values reflecting our market reach. We serve diverse regions including North America, Europe, Southeast Asia, and beyond, shipping efficiently from major ports like Shanghai, Tianjin, Guangzhou, and Ningbo. This sensor embodies our focus on delivering practical, reliable measurement tools that form the foundation for intelligent energy management. It is a component you can specify with confidence for your critical monitoring applications. To discuss your specific project requirements, obtain detailed datasheets, or request a quotation, please contact our sales team.
Frequently Asked Questions (FAQ)
-
Q: What is the main difference between an open-loop and a closed-loop current sensor?
A: Open-loop sensors use a Hall element and a linear circuit to directly produce an output voltage proportional to the magnetic field from the primary current. They are generally simpler, more compact, and more cost-effective. Closed-loop sensors use a compensation winding to nullify the magnetic field, offering higher accuracy and faster response but at a higher cost and larger size. -
Q: Can this sensor measure DC current?
A: The standard model is designed for AC current measurement. For DC current measurement, a specific DC-capable or bi-directional Hall effect sensor would be required, which can be discussed as a customization option. -
Q: How do I select the right output signal (4-20mA vs. 0-5V/10V)?
A: 4-20mA signals are highly resistant to electrical noise and voltage drop over long cable runs, making them ideal for industrial environments. 0-5V or 0-10V signals are simpler and commonly used for shorter distances within control panels or when interfacing with specific data acquisition cards. The choice depends on your system's input requirements. -
Q: What is the typical installation process for this sensor?
A: Installation is straightforward. The current-carrying conductor (busbar or cable) is passed through the sensor's aperture. The sensor is then fixed in place using its mounting holes or a DIN rail clip. Finally, the power supply and output signal wires are connected to the appropriate terminals. -
Q: Is it necessary to calibrate the sensor after installation?
A: The sensor is factory-calibrated. For most applications, no field calibration is needed. However, for critical high-accuracy applications, periodic verification against a known reference is recommended as part of a maintenance schedule. -
Q: Can the sensor be used for high-frequency or harmonic-rich currents?
A: Yes, with a bandwidth of up to 20 kHz, this sensor can accurately measure currents containing harmonics, making it suitable for monitoring variable frequency drives (VFDs), UPS systems, and other non-linear loads. -
Q: What happens if the primary current exceeds the 500A rating?
A: The sensor can typically withstand a certain level of overcurrent for a short duration (specifications available upon request). However, continuous operation above the rated current may affect accuracy and long-term reliability. It is advisable to select a sensor with a rated current slightly above your maximum expected operating current. -
Q: Are customizations like different aperture sizes or mounting brackets available?
A: Yes, as a manufacturer, we can often accommodate custom requests for aperture dimensions to fit specific busbars or cables, as well as alternative mounting options. Please inquire with your specific requirements.
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