Cataphoretic painting demands rectifiers apt to supply adjustable direct tension up to hundreds voltage, finely stabilized and smoothed, accurate rising ramps, adjustments according to process phases.
Protection devices must be safety and redundant type .
CAEV design and produce a line of rectifiers for cataphoretic with adjustable voltages up to 900Vdc and currents up to 3000Adc.
o Three phase input voltage according to customer requests
o Main breaker with handle and locking system
o Main transformer according to IEC standards
o Thyristor rectifying bridge: six phase with reactor, three phase bridge, twelve pulse bridge
o Output voltage and current stepless regulation from 0 to the nominal value
o Constant voltage and constant current regulation
o Output voltage and current rising ramp regulation
o Hold-on adjustable voltage
o Hold-on voltage activated by external contact
o Output voltage and current stabilization: 1%
o LC cell filter to reduce output ripple according to customer requests
o Manual controls on the front door or in remote control box
o Output voltage and current display
o Remote PLC control via opto insulated signals: 0-20mA, 4-20mA, 0-10V
o Remote PLC control via Modbus or Profibus serial net
o Forced air cooling
o Closed loop water cooling
o Cooling via air conditioner for IP55 enclosures
o Epoxydic painting
o Enclosure with lugs, feet or wheels. Easily removable.
o Enclosure protection degree: IP20…IP55
o Magnetic and thermal protection
o Over-temperature protection
o Extra-fast fuses for semiconductor devices protection
o RC snubbers for semiconductor devices protection
o Over-current electronic protection
o Input phase sequence monitoring circuit
o Auxiliary circuit protection by fuses and breakers
o Copper and aluminium busbars
o Open gate alarm (Safety relay)
o Ramp Programmer
o Amperhour meter
o Process timers