BSR Controls

the principle of the ezytrigger™ was developed and first employed by bernhard rudert in the mid-1970s for 25 – 100t cranes. at that time the main customer for the product was the south african electricity utility (eskom) which required reliable speed control for installing and maintaining their turbines. the ezytrigger™ was also then supplied to the german crane manufacturer, demag. by the 80’s woolf cranes was using the units for 10 – 25t cranes and later for 180t ladle cranes. the biggest ladle crane to date using the ezytrigger™ is 600t. the units are used extensively in harsh and hazardous environments in the iron and steel industry, harbours and mines where the device had not only to stand up to high temperatures, but continuous high mains voltage spikes which were the cause of pulse tranformer breakdown. the scope of applications has grown and now encompasses industries across the power spectrum wherever thyristors are used. every single unit produced is tested twice: once bef