Rectifiers For Chromium Coating
Chrome plating is a critical and delicate process. CAEV designs and manufactures specialized rectifiers to achieve the best results in efficiency and penetration.
High-performance devices are:
- LC filter cells for optimal smoothing of the output current
- “Inrush current” device
For hard chrome plating, the rectifiers are equipped with:
- Electronic polarity reversal with automatic cycle: anodic strike – plating
- Adjustable voltage rise ramp
- Closed-loop water cooling for higher power rectifiers
- We manufacture rectifiers of any power with currents up to 30000Adc.
Technical Features
- Three-phase power supply according to customer requirements
- Main switch with door interlock
- Power transformer compliant with IEC standards
- Thyristor-controlled rectifier circuit: six-phase connection with reactor, three-phase bridge, twelve-phase
- Output voltage and current adjustable from 0 to the maximum value
- Adjustable ramp for output voltage and current rise
- Constant voltage and constant current regulation
- 1% stabilization of the set values for load or supply voltage variations
- Output current ripple smoothed with LC filter cell according to customer specifications
- Manual controls on panel front or in remote control panel
- Display of delivered voltage and current
- Remote PLC control with opto-isolated signals… 0-20mA, 4-20mA, 0-10Vdc
- Remote PLC control with Modbus or Profibus serial connection
- Forced air cooling
- Closed-loop water cooling
- Cooling with air conditioner for IP55 cabinets
- Cabinets painted with epoxy paints
- Cabinets with lifting eyebolts, feet, or wheels for easy handling
- Cabinet protection degree: IP20…IP55
- Magnetic and thermal protection of the entire equipment
- Overtemperature protection
- Protection of semiconductors with ultra-fast fuses
- RC networks for semiconductor protection
- Electronic limitation of maximum deliverable current for overload protection
- Control of correct phase sequence of the power supply
- Protection of auxiliary circuits with fuses and circuit breakers
- Connections with copper and aluminum busbars
Optional devices:
- Inrush current device
- Multiple rectifiers in a single cabinet
- Digital ammeter and dosing pump
- Ramp programmer
- Devices for process time control
