Thyristor Regulators

Small and lightweight thyristor regulators for single-phase loads are characterized with high panel installation density.
Two control systems, a phase-angle firing system and a zero-cross firing system, are built in and can be changed by remote contacts signal.

Features

• Compact structure
  Compact, lightweight and high panel installation density
• Options
  The options of heater disconnection alarm function and current limit function are available.
• Phase-angle firing/zero-cross firing
  The phase-angle firing system and the zero-cross firing system are selectable. The running by the phase-angle firing system at the initial stage and by the zero-cross firing system at the normal stage is possible.
• Zero-cross firing system
  With the delta-sigma modulation, which controls every 1 cycle, the fine control like the phase-angle firing system is possible.
• Setting unit (option)
  Display of various parameters, voltage/current/ power and change of the feedback system are possible.
• Various protections functions built-in
  The thyristor element is protected by melting of the rapid fuse for short-circuit of load, and by gate-off for over-current. For models with a cooling fan built-in, alarm is activated and output is stopped for abnormal heat-sink temperature.
• Self-diagnosis function built-in
  The self-diagnosis function is built in for abnormal operation, abnormal thyristor element and abnormal power supply.