LEM Transducers – Where Are They Used?

In modern power electronics, automation, and electrical engineering systems, a transducer plays a key role in monitoring and controlling the flow of energy. A special place is occupied by LEM transducers, which are widely used for measuring current and voltage. Their reliability, accuracy, and resistance to interference make them the foundation of many solutions in industrial, energy, and transport sectors.

What is a current transducer?

A current transducer is a measuring element that enables precise measurement of electric current flow – both direct (dc) and alternating (ac). Its operation is based on various technologies, including the Hall effect, current transformers, and digital systems. This allows the generation of an output signal proportional to the current value in the circuit, which is crucial for monitoring and controlling systems.

Current and voltage transducers differ in their operating range, but a common denominator is precise measurement and high reliability. Unlike traditional current transformers, transducers offer much greater resistance to interference and the ability to operate in demanding industrial environments.

Why is LEM associated with transducers?

LEM has long been recognized as a leader in current transducers and voltage transducers. Its solutions are characterized by high accuracy, a wide measurement range (from a few amperes to galvanic processes up to 500 kA), and resistance to electromagnetic interference. As a result, LEM transducers are used in various industries, from industrial automation through energy, to modern electric vehicle charging systems.

Applications of current and voltage transducers

Energy and power grids

In power grids, current and voltage transducers are a key element for monitoring and balancing loads. They enable control of energy flow, as well as quick response to disturbances or failures. Current transducers also help improve energy efficiency by enabling precise settlements and optimization of energy transmission.

Power electronics and power supply systems

In power supply systems and power electronics circuits, a current transducer is essential for the proper operation of inverters, power supplies, welders, or converters. LEM transducers allow precise current control and thus stable operation of power systems, which must operate reliably even in harsh industrial environments.

Industrial automation

In production and process environments, real-time current monitoring is extremely important. Current and voltage transducers enable continuous monitoring of machines and equipment, preventing failures and increasing workplace safety. They allow processes to be controlled intelligently, which is important, among others, in motor drives, robotics, and transport systems.

Electromobility and transport

The development of electric vehicles would not be possible without advanced measurement technologies. Current and voltage transducers are used in battery management systems (BMS), traction drives, and electric vehicle charging infrastructure. Accurate measurement of direct current (dc) and alternating current (ac) allows efficient energy use and extends battery life.

Energy storage and renewable energy sources

The importance of renewable energy and energy storage systems is growing in the economy. LEM transducers and related solutions, such as Hangzhi Precision current transducers, are used in photovoltaic installations, wind farms, and energy storage facilities. They allow not only measurement but also optimal energy flow management, which is crucial for grid stability.

Types of transducers and choosing the right solution

Various types of transducers are available on the market – from traditional current transformers, to Hall effect sensors, to innovative digital transducers with additional signal analysis functions. The choice of the right solution depends on:

• measurement range (from a few amperes to several hundred thousand amperes, e.g., 20 kA or 100A),
• type of current measured (ac and dc),
• requirements for insulation and interference resistance,
• industry and application specifics.

It is worth noting that Hangzhi Precision current transducers are gaining recognition in applications requiring high accuracy and interference resistance. Thanks to modern technologies, they allow precise measurement even in harsh industrial environments.

Quality standards and reliability

In professional applications, accurate measurement alone is not enough. Current and voltage transducers must meet strict quality standards, such as ISO 9001 or RoHS, to be safely implemented in critical industrial and energy systems. LEM has long focused on standard compliance, allowing reliable integration of its components in projects worldwide.

The importance of transducers in automation and energy systems

In summary, LEM transducers and other advanced solutions for measuring electric current play a key role in many industries. From monitoring power grids, through industrial process automation, to the development of electromobility and energy storage systems – a reliable current transducer is the foundation of safety and efficiency.

We invite you to explore our offer and benefit from the experience of our specialists. Together, we will find the solution best suited to your needs.