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Cathodic Protection Rectifiers




What it takes



  • SWITCHMODE CATHODIC PROTECTION RECTIFIERS




  • BENEFITS AND FEATURES OF SWITCHMODE




  • SWITCHMODE ORDERING CODES



  • SWITCHMODE ENCLOSURE DETAIL



  • TYPICAL TERMODYNAMICS





                


Our Switchmode rectifiers are known for their quality, efficiency, service life and workmanship. Switchmode rectifiers have been used for a number of years and this demonstrates its quality service it provides. There are extra features that can be installed in order to fit the specific Cathodic Protection need. The switchmode rectifier is a newer technology and is significantly more advanced than Traditional transformer rectifiers utilising high frequency switching devices resulting in far greater feedback responsiveness, efficiency and automation.

Switchmode Cathodic Protection rectifiers can typically be used with corrosion protection on pipelines, tank farms and other vulnerable metals, that are at risk of corrosion, where impressed DC currents are required
.



Benefits and Features of Switchmode Cathodic



Benefits of Switchmode Cathodic Protection Rectifiers
  •   High efficiency of up to 95%
  •   Significantly lower cost than a Transformer rectifier
  •   ± Half the size of a Transformer rectifier
  •   Single phase which means a lower power consumption
  •   Light weight design
  •   30% less operating temperature than a Transformer rectifier
  •   Output DC ripple is less than 200mV


Features of Switchmode Cathodic Protection Rectifiers

  •   Automatic PID output feedback control (Constant voltage , constant current, constant reference potential and iterative instant off)
  •   Heavy duty power factor correction rectification
  •   Single phase wide range voltage input 90– 260 VAC
  •   Input frequency range 47– 63 Hz
  •   High frequency switching for maximum efficiency of up to 95%
  •   Digital metering with backlight for voltage, current and reference potential
  •   C–curve input circuit breaker for inrush protections and DC output fuses for current fault  protection
  •   DC fuse status, AC circuit breaker, phase failure indication LEDs
  •   High resolution control, 1% accuracy feedback variables measurement
  •   DC Output ripple voltage 150 mVAC
  •   Hour counter for when rectifier output is less than 100mA
  •   5 Input digital I/O card for custom alarms and telemetry
  •   kWhr Meter
  •   Forced air cooling by DC ball bearing fan
  •   The output shut off protection with automatic recovery for overload, over voltage and over temperature
  •   Rectifier operating temperatures –4 to 122°F/ (-20 to 70°C)
  •   Terminal blocks for AC input wires, monitor, reference and coupon
  •   1000 V insulated, temperature resistant flexible multi strand wiring
  •   Coupon interrupt facility for defect potential measurement
  •   Bussbar connection for Anodes and structure
  •   Input lightening protection Class ll 40kA (8/20μs)
  •   Output lightening protection Class l 100kA (10/350μs)
  •   Monitor/ reference Signal surge protection
  •   115 VAC convenience outlet
  •   Stainless steel Grade 3CR12 (UNS S40977) Cabinet, Powder coated cabinet finishes (grey standard) with IP65 ingress protection
  •   Inner door separating hazardous components with metering, measuring and controlling components. The inner door is accessible so that change of setting and socket measurement can be done easily as well as data logging.




Switchmode Ordering Codes


Switchmode Designs are according to power ratings. We have 3 standard switchmode power ratings: 150W, 300W and 1500W. Within these power ratings, switchmodes have different maximum output voltages: 12V. 24V and 48V. Their maximum current varies accordingly.


 

 

Switchmode

ordering code

 

 

Power

 

Output Voltage

 

 

Output Current

 

101

 

 

150W

 

12V

 

12.5A

 

102

 

 

150W

 

24V

 

6.25A

 

103

 

 

150W

 

48V

 

3.125A

 

201

 

 

300W

 

12V

 

25A

 

202

 

 

300W

 

24V

 

12.5A

 

203

 

 

300W

 

48V

 

6.25A

 

301

 

 

1500W

 

12V

 

125A

 

302

 

 

1500W

 

24V

 

63A

 

303

 

 

1500W

 

 

48V

 

 

32A

 


Optional Extras

  • GSM Module (For GSM module add G after your switchmode ordering code)
    • Optional GSM Modem using RS232 for telementry. Modem can send instantaneous values of output voltage, current and reference potential measurement, 24 Hour period logged values, 8 bit user defined alarms including phase failure , circuit breaker and fuse rupture. Modem can also relay present control mode and has the ability to change control mode, set up parameters and boundary values. This requires a registered sim card.

  • Manual Control (For manual control add M after your switchmode ordering code)
    • This is a feature where the user can switch over from automatic control to manual output voltage using a potentiometer style knob accessible from the inner door.