SCR Three Phase Half Controlled Bridge Converter

The SCR Three Phase Half Controlled Bridge Converter is designed for studying three-phase controlled rectification using SCR firing techniques. It provides a practical platform for understanding SCR operation, phase control, firing circuits, and AC-to-DC power conversion. The trainer includes digital meters, power supply arrangements, SCR and diode circuits, AC phase control for R, Y, and B phases, and a resistive load for practical experimentation. The unit is housed in a metal cabinet with a clearly printed insulated circuit board. Designed and manufactured by Atico Export to meet the practical demands of modern laboratories.

Digital Meters:

• Voltmeter: 2000 V AC.
• Voltmeter: 2000 V DC.
• Ammeter: 2 A DC.

Power Supplies:

• +15 V / 150 mA.
• Isolated supply: 0–110 V or 24 V at 1 A.
• Mains operated: 415 V, 50 Hz ±10%.

Components Mounted on Panel:

• SCR assembly.
• Diodes.
• AC phase control by gate control firing circuit for R, Y, and B phases.
• Resistive load with lamp and 20 W resistor.

• Protective cover.
• Front panel with high-class insulated printed circuit board featuring clearly printed circuits and symbols.
• Fuse and MCB protection against short-circuit conditions.
• Instruction manual.
• Connections through 4 mm coloured sockets.
• 4 mm patch cords.
• Housed in a metal cabinet.
• Trainer size: 14 × 12 inches and 18 × 12 inches.