New power controller
September 1st 2005 A new power controller has been developed by REO (UK). Called the REOTRON MEW 700/50 2S, the controller operates on the phase angle principle but, unlike traditional systems, it reduces harmonics (power factor) and provides a smoother process. The unit can be used for voltage, current or power regulation.
The REOTRON controller produces two output voltages simultaneously; one is adjusted by firing thyristors at a variable phase angle, while the other is permanently on full conduction but at a lower voltage level. This avoids abrupt switch on of current at the firing angle. The two outputs are combined by interposing a transformer, with two primary windings, between the controller and the load.
Applications include water treatment, electroplating, lasers, smelting, heat treatment and metal coating. More articles from REO (UK) Ltd: | 
