The JU series small and lightweight thyristor regulators for single-phase loads are characterized with high panel installation density.
- Compact structure
Compact, lightweight and high panel installation density
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.