JUMO TYA-110 thyristor power unit (709040)

Thyristor power units are employed where larger ohmic and inductive loads have to be switched, e.g. in industrial furnace/kiln construction and plastics processing. The thyristor power unit comprises two anti-parallel switched thyristors, the insulted cooling body and the control electronics. Thyrister power units up to a load current of 50A can be either clipped onto a 35 mm mounting rail or fitted to the wall on a mounting plate. Units larger than 75A load current have to be fitted to the wall. Depending on the position of the internal switches, the thyristor power units operate with phase control and settable current limitation, or in the burst firing mode. In the burst firing mode, the phase angle of the first half wave can be controlled to also allow the operation of transformer loads. During the control process, mains voltage fluctuations do not affect the unit to be controlled. This is ensured by the choice of a underlying U²-, I²-, P control. An input signal attenuation allows the control range to be restricted and a base load to be prescribed via an external potentiometer. The burst firing mode allows an economy circuit for a multi-phase load. In the phase control mode, the default phase angle of the controller is slowly reached, starting at 180 degrees, in order to avoid high starting or inrush currents (softstart). The thyristor power units meet VDE 0160 5.5.1.3 (5/88) and VDE 0106 Part 100 (3/83). The device has to be grounded in accordance with the regulations of the competent energy supply company.

Accessori-articoli