Thyristor Regulators Thyristor Regulators JB Series Single-Phase Thyristor Regulators     The JB series small and lightweight thyristor regulators for single-phase loads are characterized with high panel installation density. 6-models from 10A rated current to 100A rated current are available. Two control systems, a phase-angle firing system and a zero-cross firing system, are built. Features Compact and standalone, mounting space-saving, easy wiring Phase-angle firing/zero-cross firing can be selected according to applications, power source environment, etc. Soft-start, soft-up/down and soft-start at power failure recovery for precise control Automatic frequency judgment function, ramp setting function and low limit setting function are built-in. Models Models Rated current JB-2020 20A JB-2030 30A JB-2040 40A JB-2050 50A JB-2075 75A JB-2100 100A Specifications Phase Single-phase Rated current 20, 30, 40, 50, 75, 100A (to be specified) Rated voltage 100 to 120VAC, 200 to 240VAC (selectable by terminals) Rated frequency 50/60Hz (automatic change) Input signal 4 to 20mADC, 1 to 5VDC or ON-OFF contact signal (selectable by terminals) Input resistance 100 (4 to 20mADC), 25 (1 to 5VDC) Output range 0 to 98% of rated voltage Minimum load current 0.5A (at 98% output) Applicable load Resistive load, inductive load (primary side control of transformer, flux density 1.2T or lower, phase-angle firing system only) Control system Phase-angle firing/zero-cross firing (selectable by internal dip switches) Output setting range Ramp setting (0 to 100%) Low limit setting (0 to 100%) Over-current protection Thyristor gate-off (120% or more of rated current, on built-in or external CT) Other functions Soft-start, soft-up/down (1 to 20 seconds), soft-start at power failure recovery Dimension H172 x W48 x D143mm (for 20A, 30A) H188 x W68 x D148mm (for 40A, 50A) H200 x W116 x D157mm (for 75A, 100A) Weight About 1.0kg for 20A and 30A, about 1.3kg for 40A and 50A, about 1.9kg for 75A and 100A Page Top BACK