Transformer Rectifier Transformer Rectifier

Transformer Rectifiers

Corrosion Electronics offers a wide range of transformer rectifiers to suit a variety of cathodic protection (CP) applications. Whether its battery powered or AC powered and operating at millamps or hundreds of amps, Corrosion Electronics can help you with your transformer rectifier design and provide you with a product suitably tailored to your needs.

Lets start with the cabinet...

Transformer rectifiers can come in a variety of different cabinet sizes, many of the TR's that we build are assembled into off-the-shelf type cabinets. Using these off-the-shelf type cabinets can have a dramatic impact on lowering the cost of building a transformer rectifier (designing customised cabinets can be time consuming and costly to manufacture by comparison).

All of our transformer rectifier cabinets used can either be wall mounted, mounted onto a plinth or pole mounted if necessary. The picture to the right is an example transformer rectifier built by Corrosion Electronics using an off-the-shelf 316 stainless steel cabinet featuring an IP66 rating, padlockable swing handle, rainhood and a custom made galvanised floor stand.

All off-the-shelf cabinets are available in either powdercoated mild steel, powdercoated aluminium or 316 stainless steel. If you require your TR to be in a particular colour - it can also be arranged.

Corrosion Electronics is well accustomed to handling transformer rectifier designs that involve customised cabinets. Providing customised cabinets can become necessary when concerned with large scale TR designs or satisfying installation needs.

Transformer Rectifier Transformer Rectifier Transformer Rectifier Oil Filled Transformer Rectifier

Choosing a method of control...

Transformer rectifiers essentially convert incoming AC power into a DC output. This can be acheived using different means. Below you will find information on a few of the control methods that can be used in transformer rectifiers and how they can differ.

Manual Control

Manual Transformer Rectifier

Corrosion Electronics has produced several transformer rectifiers incorporating manual control. Manual control is a very simple control method which primarily refers to the using of a variable autotransformer (variac) and/or a tapped transformer to produce a variable constant voltage DC supply on the output.

Bullet Point Robust Bullet Point Constant voltage control only
Bullet Point Simple to operate Bullet Point Poor load regulation (Voltage sags as current increases)

Phase angle control

Transformer Rectifier

Corrosion Electronics is able to offer Phase Angle Control in almost every application apart from solar output regulation. This mode of control has proven to be a very rugged and reliable means of producing a DC output voltage. Whether your needing a single output Transformer Rectifier or even a multiple output Transformer Rectifier, Phase Angle Control can be adapted to suit.

Bullet Point Constant Volts/Amps/Ref Potential Bullet Point Milliamps to hundreds of amps output current
Bullet Point Rugged Electronic Control Bullet Point Easy to protect from lightning transients
Bullet Point Single and 3 phase power input Bullet Point Soft start on power-up or after interruption
Bullet Point Optional remote control Bullet Point Optional "Freeze Control" to suit DCVG surveys
Bullet Point Digital or analogue control Bullet Point Small outputs can be modular

Switched Mode Control (SMPS)

SMPS Controller

Switched mode power supplies are commonly used throughout the world today and offer distinct advantages over any other method of control.

Some of these advantages are:

Bullet Point High Operating Efficiency (>80%)
Bullet Point Low Heat Dissipation
Bullet Point Very low AC ripple on the DC output

The high efficiency of SMPS controllers make them ideally suited to installations using battery power as an input. The switched mode controllers currently offered by corrosion electronics are available in either a common positive or common negative configurations and can output anything up to 50V / 20A.

Bullet Point 20A / 50V Maximum output Bullet Point Independant voltage/current limits
Bullet Point Constant Volts/Amps/Ref Potential Bullet Point Limit LED indicator
Bullet Point Optional remote control Bullet Point Optional "Freeze Control" to suit DCVG surveys
Bullet Point Modular design


DescriptionFiletypeDownload link
CP10x Product datasheet.pdfDownload
PC41 Phase angle controller product datasheet.pdfDownload
PC42 Phase angle controller product datasheet.pdfDownload
PC5x Digital controller operating manual.pdfDownload
SM525P SMPS product datasheet.pdfDownload
SM2050P SMPS product datasheet.pdfDownload