Magnetic Specialties commissions power supplies for tool manufacturer

Magnetic Specialties Inc., Telford, Pa., has shipped and commissioned two power supplies used in a continuous brazing furnace for a tool manufacturing company. The new power supplies, rated at 125 and 100 kW, were designed as direct replacements for a pair of existing, obsolete power supplies.

The brazing furnace has silicon-carbide heating elements, which increase in resistance as they age. To compensate for this, the output transformers feature a tapped secondary winding. These taps are connected to a rotary tap switch for simplified tap changing. As the elements age, the customer can select a higher output voltage range via the tap switch. The customer will use the metering feedback to know when the tap needs to be changed.

The new power supplies reduce furnace downtime and provide tighter regulation of the furnace temperature to deliver more consistent quality of the brazed parts, the company states.