AC loads

AC loads play a central role in development, quality assurance and series production. Their relevance lies in their ability to provide reproducible test conditions, detect errors at an early stage and make development cycles more efficient.

Precise test conditions for demanding industrial applications

High-quality AC loads offer engineers the opportunity to generate highly precise and reproducible load profiles. This allows the behavior, stability and efficiency of AC sources to be precisely analyzed under defined conditions. Especially in safety-critical industries, this accuracy is crucial in order to reliably meet standards and performance requirements.

Reliability and robust industrial quality

AC loads from our range are designed for long-term use in demanding test environments. High-quality components, constructive robustness and thermally optimized designs ensure stable measuring conditions even during long-term or high-performance tests. For users, this means: maximum availability, minimum maintenance times and long-term investment security.

Efficient test processes and short development cycles

Fast adjustability, intuitive operation and comprehensive measurement functions mean that high-quality AC loads significantly reduce the time required for test setups. Automated test sequences ensure repeatability and minimize manual errors. For development and quality teams, this means shorter cycles, more precise results and greater overall test efficiency.

AC loads are used in a variety of industrial and technological testing processes as they provide precise and reproducible load conditions. They enable the realistic simulation of operating conditions in order to validate systems under different power and frequency requirements.

Testing AC power supply units and power supplies

AC loads are used in the development and end-of-line testing of AC power supply units, voltage transformers and UPS systems. They simulate real load changes and enable the testing of protective functions, control behavior and thermal stability.

Testing generators and power generators

AC loads are used in power plants, wind turbines, mobile generators or power supply modules to analyze performance and efficiency across the entire load range. Their ability to generate dynamic and non-linear load curves as they occur under real conditions is particularly valuable.

Validation of frequency inverters and drive systems

Frequency inverters play a central role in industrial automation. AC loads enable realistic testing of output power, overload capacity, efficiency and control behavior - both in stationary operation and under transient loads.

Railroad technology, aviation and automotive

Modern transportation systems are increasingly relying on electrical energy supply. AC loads support the validation of vehicle electrical systems, emergency power systems, charging units and safety components. Especially in industries with high safety standards, controlled load tests make an essential contribution to system reliability.

Test laboratories, certification bodies and research institutes

In accredited laboratories and research facilities, AC loads enable standard-compliant testing of various AC systems in accordance with international standards. Thanks to precise measurement and analysis functions, they are particularly suitable for characterizing new technologies and materials.

The selection of suitable AC loads requires a careful evaluation of the technical requirements and operating conditions. The power range, operating modes and measurement functions must be precisely matched to the respective test processes. A well thought-out decision ensures that the load remains reliable, efficient and adaptable to future requirements in the long term. The following points provide an initial orientation or support you in your selection.

Power range and electrical parameters

Before purchasing an AC load, check what power, voltage and current are required in the test process. Equally important are the frequency range, power factor, crest factor and the required dynamic range. The load must reliably cover the entire planned application range.

Load types and operating modes

AC loads can support different operating modes - e.g. constant current, constant voltage, constant power or defined impedance curves. Depending on the test procedure, the ability to map inductive or capacitive load conditions can be decisive. A load with extensive programmable profiles is recommended for demanding development environments.

Measurement and analysis functions

High-quality AC loads integrate precise measurement modules for analyzing voltage, current, power, harmonics and efficiency. A high measurement resolution range and fast sampling rates enable detailed diagnostics, which are essential for development and certification processes.

Integration into existing test environments

Interfaces such as Ethernet, CANopen, Modbus TCP, RS-485, GPIB, or modern automation protocols facilitate integration into laboratory and production systems. It is also advantageous if the loads offer integrated scope functions and analysis tools for harmonic frequencies.

With decades of experience (since 1982) in power supply technology and a broad portfolio of leading manufacturers, we are your partner for customized solutions. Benefit from our strengths for your project:

Technical expertise

We understand the complex requirements of industrial testing processes and advise you individually.

Extensive range

From compact desktop units to powerful cabinet solutions with several 100 kVA.

Service and first-level support

We support you from selection to commissioning and maintenance.

Special solutions

On request, we can realize customer-specific adaptations for special applications. In addition to high-quality AC loads, we also offer you complete turnkey enclosure systems that are precisely tailored to your specific requirements.

With us, you don't just get a device, but a complete solution - including technical support and long-term availability.