D.C. Supply is required for the excitation of the magnet coils. A suitable transformer and rectifier is needed for each Electro Magnet. Switching ON/OFF is done on the three phase/A.C. side of the rectifier. By this kind of connection no additional protective measures against voltage peaks are required which arise by the high inductivity of the magnet when switching off.

The rectifiers and the three phase current motors are dimensioned for 415V/50Hz. The units can also be supplied for other voltages and frequencies, on request.

Elektromag manufactures and supplies appropriate accessories such as Transformer Rectifier Sets and Control Panels to provide DC Power supply to the Magnets and AC power to the Drive Motors used in Magnetic Separators.

CONTROL PANEL FOR OVERBAND MAGNETIC SEPARATOR

The supply includes a control panel with powder coated paint suitable for 415V, 3 phase, 50Hz. incoming supply, incorporating the following components

Moulded case circuit breaker (MCCB) and indicating lamps for incoming supply.
Semiconductor fuses on secondary side of the transformer & HRC fuse for DC circuit.
Three phase air cooled transformer suitable for incoming supply with tappings on both primary and secondary sides.
Three phase silicon Bridge Rectifier.
Contactor for switching on magnet with necessary ON-Off push buttons.
Contactor for switching on motor with necessary ON-OFF push buttons.
Motor protection circuit breaker for motor.
MCB on primary & secondary side of the control transformer for control circuit.
Local / Remote Selector Switch for feedback of local / remote selection and terminals for   remote switching ON/OFF of the Magnet and Motor.
Digital voltage sensing relay with display for DC voltage.
Digital current sensing relay with display for DC current.