The LEM LV 25-P/SP5 is a voltage transducer designed for electronic measurement of voltages. It allows the measurement of DC, AC, pulsed, and mixed signals while providing galvanic isolation between the primary circuit (high voltage) and the secondary circuit (measurement output). It is commonly used in industrial and automotive applications where accurate voltage measurement and isolation are crucial.

Applications:

• AC variable speed drives
• Static converters for DC motor drives
• Uninterruptible Power Supplies (UPS)
• Switched Mode Power Supplies (SMPS)
• Welding equipment
• Battery monitoring systems

Features:

• Galvanic isolation between primary and secondary circuits
• Measures DC, AC, pulsed, and mixed voltages
• Compact design
• Low power consumption
• High accuracy
• Fast response time

Benefits:

• Safe and reliable voltage measurement in high-voltage environments
• Accurate monitoring and control of power electronic systems
• Reduced system complexity
• Improved energy efficiency
• Enhanced system protection
• Simplified maintenance and troubleshooting

Additional Details:

The LV 25-P/SP5 operates on the principle of the Hall effect. The primary voltage is converted into a proportional current that flows through a coil within the transducer. This current generates a magnetic field, which is then sensed by a Hall sensor. The output of the Hall sensor is proportional to the primary voltage and is galvanically isolated from the primary circuit. The transducer requires a supply voltage, typically +15V, and provides an analog output signal that can be easily interfaced with a microcontroller or other control system. It is designed to operate within a specific temperature range and is protected against overvoltage and short-circuit conditions. The accuracy of the measurement is affected by factors such as temperature and linearity, which are specified in the datasheet. Proper shielding and grounding techniques are essential for minimizing noise and ensuring accurate measurements. The LV 25-P/SP5 is compliant with relevant safety standards, ensuring safe operation when installed and used according to the manufacturer's guidelines.

The transducer's fast response time enables real-time monitoring and control of voltage levels, allowing for prompt corrective actions in the event of voltage fluctuations or other anomalies. Its compact size facilitates integration into space-constrained applications. The low power consumption minimizes the energy footprint of the overall system. The LV 25-P/SP5 is widely used in industrial automation, renewable energy systems, and electric vehicle applications, where precise and reliable voltage measurement is critical for optimal performance and safety.