Independent pole point on wave synchronous closing control for electric arc furnace switching

The Transmaster™ electric furnace switch can be provided with independent pole, point on wave, synchronous closing control. Point on wave closing control substantially reduces the inrush current magnitude and transients associated with transformer switching by energizing the furnace transformer at the optimal point on the voltage waveform. Each phase of the transformer is closed independently, synchronized with the occurrence of peak voltage. This eliminates problems such as overvoltages and significant electromechanical forces on the transformer bushings, windings, and insulation which reduces equipment life and increases maintenance costs.



	Longer Equipment Life
	Reduced forces on bushings, windings, and insulation which results in lower total ownership cost
	Increased Safety
	Less electrical stress on transformer interwinding insulation
	Reduced Maintenance Costs
	Reduced wear on components decreases maintenance requirements
	Increased Reliability
	Less down time results in increased productivity

For use with Joslyn Electric Furnace Switches

VBT Transmaster Switches (up to 69 kV)

VBU-T Transmaster Switches (up 69 kV to 230 kV)

Joslyn Hi-Voltage Royce Thompson Fisher Pierce