Completion: The new power supplies for the 3-phase-systems

In addition to a considerable number of new innovations, reducing costs has been a key focus in developing these units.

This relates both to the costs of the unit itself as well as the system costs for the user. A high level of efficiency plays a critical role as ever. Minimal losses are a basic requirement for constructing small and reliable units. For example, the width of the 40A unit has been successfully reduced from 275mm to just 110mm. This not only saves cabinet costs, but also reduces the costs of cooling, electricity and logistics.

An important contribution to increasing the high efficiency is provided by the Mosfet synchronous rectifiers in the power supply output stages. PULS has a clear advantage here thanks to its many years of experience and pioneering breakthroughs in this field. 

PULS was also the first to succeed in maintaining high efficiency over a broad output power range. With typical loads, this reduces the heat generation and increases the reliability on all devices in the control cabinet. The low weight of the units reduces the mechanical stress on the DIN-rail and makes the units more immune to mechanical shocks and vibrations.

All units (except QT20) also have integrated input fuses included and can be connected directly to the industry-standard 32A CEE outlets. This reduces space and costs for additional circuit breakers and wiring. The 100W and 120W devices just require two phases on the input. This makes narrow units possible, without compromise and the need for additional terminals that would otherwise make the unit larger.