Dc Filtered Power Supply

Dc Filtered Power Supply .
DC FILTERED POWER SUPPLY - Didactic equipment:
DC variable power supply, power supply unit for variable 3- phase voltage suitable for supplying dc machines. It must provide a DC output from 0 to 240 V, 8 A minimum.           
  It must be provided with a 16 A, 30 mA differential magneto-thermal main switch, a key operated emergency push-button, start and stop push-buttons a motor protection circuit breaker: 6.3 to 10 A, a digital ammeter and a digital switchable voltmeter. 4 mm safety terminals for electrical connections included.
The output voltage must be set by a rotary knob with 0-100% scale.
Supply voltage: three-phase from mains.