Arc Furnace Applications

– Stable arc detection

– Different control modes (constant current, constant power or constant resistance)

– Quick connection to Power Quality Systems (PQS)

Includes ELREG (electrode regulation; control of the anode hydraulic system) function:

– Manual electrode control (analogue or digital)

– Electrode quick lift function (with or without separate quick lift valve)

– Automatic arc extinguishing function

– Automatic re-arc function

– Adaptive electrode control according to furnace conditions or heating stage

– Stacked integral control circuit

– Voltage fluctuation measurement (stability index calculation)

– Arc detection/protection of the furnace roof

– Protection of the furnace top from arcs during arc extinguishing

– Hydraulic oil pressure monitoring and electrode protection

– Collapse detection

– High-pressure detection

– Control logic for backpressure valves

– Voltage monitoring to ground

– Voltage monitoring at the top of the furnace

– Automatic raising of the electrode after a furnace shutdown command (distance or position selectable)

– Shut-off valve control

– Electrode speed limitation to protect electrode and arm

– Future functions

– Automatic proportional valve linearisation

Check

– Automatic proportional valve linearisation

– Dynamic voltage setpoint control for stable melting processes