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Single-phase JU

Single-phase JU
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THYRISTOR REGULATOR JU SERIES JU series 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. In the phase-angle firing system, feedback types of voltage, current and power, and no-feedback type are selectable depending on heating characteristics of heaters. Three kinds of input signals, 4 to 20mADC, 1 to 5VDC and ON-OFF contact signal, can be changed by terminal connections. Options of heater disconnection alarm function and current limit function are available. The rapid fuse is built in all models and the current transformer built-in type is also available. FEATURES Compact structure Compact, lightweight and high panel installation density Setting unit (option) Display of various parameters, voltage/current/ power and change of the feedback system are possible. Options The options of heater disconnection alarm function and current limit function are available. 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. 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. Self-diagnosis function built-in The self-diagnosis function is built in for abnormal operation, abnormal thyristor element and abnormal power supply. 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.

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MODELS JU Power supply 10: 100V 11: 110V 12: 120V 20: 200V 22: 220V 24: 240V 38: 380V 40: 400V 44: 440V 99: Others Rated current 010: 10A 020: 20A 030: 30A 050: 50A 075: 75A 100: 100A 150: 150A 200: 200A 250: 250A 300: 300A 400: 400A 500: 500A 750: 750A X00: 1000A Control system/feedback type V: Phase-angle firing · voltage feedback / Zero-cross firing A: Phase-angle firing · current feedback / Zero-cross firing W: Phase-angle firing · power feedback / Zero-cross firing 1 N: Phase-angle firing · no-feedback * / Zero-cross firing C: Zero-cross firing Rapid fuse A; Built-in N: Not provided...

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PERFORMANCE SPECIFICATION Main power terminal M4 Setting terminals M3 fl Installation hole 0I8 Earth terminal ' Main power terminal M12 (M16) Main power terminal M5 • Setting unit Main power terminal M10

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Power supply: Supplied from thyristor unit Working temperature: -10 to 55ºC Working humidity: 30 to 90%RH (no dew condensation) Weight: About 50g Heater disconnection alarm Detects the heater disconnection by built-in or external CT. When disconnection is detected, LED blinks and alarm contact output becomes ON. The selection of phase-angle firing system/zero-cross firing system is not possible. Current limit Sets the maximum limit of the load current (detected by built-in or external CT. The combination with zero-cross firing system is not possible. Setting unit Setting: Output (0 to...

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