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 even pole mounted if necessary. The picture to the left 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 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.

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.

1) 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.

The main limitation with using this form of control is that the output is essentially only "Constant Voltage" which can vary significantly depending on the output load. It is not possible to provide constant current or constant potential control.

For more information on manual control - please click here.

2) Phase Angle Control

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. 

FEATURES:

	Milliamps to thousands of amps output current
	Constant Volts/Amps/Ref Potential
	Rugged electronic control (High voltage rated devices)
	Relatively easy to protect from lightning transients
	Single and 3 phase power input
	Soft start on power-up or after interruption
	Output "Power Good" Indication
	Optional "Interrupt Freeze" to promote smooth transistion from
	OFF to ON  - suits DCVG surveys on pieplines
	Optional remote control

For more information on the DCR3P module and the PC42 interface please click here.

3) Switched Mode Control (SMPS)

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:

	High operating efficiency (>80%)
	Low heat dissipation
	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 30V / 10A.

For more information on the switched mode control options that we offer - click here.