What is a frequency converter and what is it required for? The introduction of frequency converters into industrial plants began in the early 1970s. Until then, it was only possible to operate electric motors directly on the grid and thus at defined speeds. If an electric motor, e.g. an asynchronous machine, is operated directly on the grid (50Hz), a fixed speed is set, known as the nominal speed, based on the grid frequency and the pole number of the motor. In the past, where different speeds were required due to the application, mechanical gears were used. Some readers may remember what was known as the “delta changeover”. This was used to limit the power of the motor at the moment it is switched on in the case of directly operated motors. What do variable motor speeds have in common with energy savings? The option of continuously adjusting the motor speed […]
Clients
The Dutch manufacturer of industrial sawing machines, Harwi, is known for the durability, quality and user-friendliness of its products. To increase its own productivity and simplify assembly, Harwi opted for tailored cable assemblies from LAPP. This saves the machine manufacturer four hours per constructed machine, which sums up to an additional machine every two to three weeks. In addition, the installation of the sawing machines on site has been noticeably simplified and the risk of incorrect cabling is reduced. Safety, ergonomics and health – these are Harwi’s current development goals for the industrial sawing machines they have been constructing since 1960. The company from Helmond in the Netherlands is also known for its extremely durable products: “We know that there are Harwi sawing machines that have been in use since my birth, i.e. for over 35 or 40 years,” says Adrian van Mensvoort, Managing Director of Harwi. Three years ago, […]
With the start of activity in August 1994, “Policabos”, the name used at the time, is a Portuguese import/export and wholesaler of electricity and data transmission cables, optical cables and accessories, providing technical solutions in the field of installations of cables. The formation of “Lapp Policabos”, the name by which we are currently recognized, had as its primary objective to respond to the needs of the Portuguese market in special and optical cables, not contemplated in the production programs of national manufacturers, essentially in the industrial area. Since the company’s foundation almost 30 years ago, it has been growing safely and sustainably. Proof of this is the numbers presented, however, also the satisfaction of our customers with the quality of the products and the service provided. At Lapp Policabos, we base all our work on the quality and professionalism with which we respond to the needs of those who seek […]
