TR UNITS Cathodic Protection Transformer Rectifiers
Transformer Rectifier Units (TRUs) are the backbone of impressed current cathodic protection (ICCP) systems, providing a stable and adjustable DC power supply to protect buried or submerged metallic structures from corrosion. Designed for high efficiency and durability, these units convert AC power into precisely controlled DC output, ensuring optimal protection for pipelines, storage tanks, marine structures, and industrial facilities.
Available in air-cooled, oil-cooled, and explosion-proof designs, TRUs are engineered to operate in extreme environments, offering robust electrical insulation, overload protection, and efficiency. Advanced options include remote monitoring and control, allowing real-time adjustments and diagnostics to optimize system performance.
With customizable voltage and current outputs, transformer rectifier units provide a reliable and long-lasting solution for cathodic protection applications, ensuring maximum corrosion prevention and system longevity.
Its unique ability to synchronize multiple rectifiers via GPS satellites (optional) enables pipeline diagnostic work without the need for costly external interrupters.
Price on request: $ 00
50V / 20A TR Unit
| Specifications | |
|---|---|
| Input Voltage | 230V 50/60 Hz (±%20) |
| Output Voltage | 0.25 – 50V DC |
| Output Current | 0 – 20A DC |
| Output Fuse | 32A Semiconductor Fuse |
| Short Circuit Protection | Electronic |
| Thermal Protection | 90°C ± 5°C (Heat Sink Temperature) |
| Efficiency | >%85 |
| Operating Temperature Range | -30, +60°C |
| Output Voltage Meter | 0-81.92V DC (±%1 +0.25V) |
| Output Current Meter | 0-25.5A DC (±%1 +0.1A) |
| Pipe to Soil Voltmeter | ±10V DC (±%1 +20mV) |
| IP Protection | IP54 |
| Dimensions | 820 x 990 x 520 mm |
| Power Control Method | High Frequency DC-DC Converter with MOSFET switch |
| High Voltage Protection | Protection over all inputs and outputs |
| Operating Modes | “Automatic, Adjustable Voltage Limit Automatic, Adjustable Current limit Manual, Constant Current, Interrupted Manual, Constant Current, Continuous Manual, Constant Voltage, Interrupted Manual, Constant Voltage, Continuous” |
50V / 20A TR Unit
| Specifications | |
|---|---|
| Interrupted Mode of Operation | |
| On Time Adjustment Range | 0.1 – 99.9s (0.1 sec resolution) |
| Off Time Adjustment Range | 0.1 – 99.9s (0.1 sec resolution) |
| Reference Electrode | 1 true differential isolated input |
| Input Voltage Range | ±10V DC (±%1 +20mV) |
| Filtering | 50-60Hz Notch Filter allows unaffected DC measurements with superimposed AC voltages up to 18V |
| SCADA Output 1 | RS485-MODBUS RTU(YYY=MB) |
| SCADA Output 2 | “3 Channels 4-20mA Self Powered • Anode – Cathode Current • Anode – Cathode Voltage • Reference Electrode Voltage” |
| Contact Outputs | “4 Pcs Dry Contact Outputs • Automatic / Manual Operation • Interrupted / Continuous Operation • Faulty / Healthy • Power On / Off” |
| Statistical Datalog | Modbus Readable Last 30 Error Records |
| Warranty | 2 years (componensts and workmanship) |
| Parts and Service Warranty | 10 Years |
50V / 50A TR Unit
| Specifications | |
|---|---|
| Input Voltage | 230V 50 Hz (±%20) |
| Input Current | 18A |
| Output Voltage | 0 – 50V DC (±0,25V) |
| Output Current | 0 – 50A DC (±0,25A) |
| Output Fuse | 63A Semiconductor Fuse |
| Short Circuit Protection | Electronic |
| Thermal Protection | 90°C ± 5°C (Heat Sink Temperature) |
| Efficiency | >%85 |
| Operating Temperature Range | -30, +60°C |
| Output Voltage Meter | 0 – 81,92V DC (±%1 +0.25V) |
| Output Current Meter | 0 – 61,44A DC (±%1 +0.25A) |
| Pipe to Soil Voltmeter | ±10V DC (±%1 +20mV) |
| IP Protection | IP54 |
| Dimensions | 1190 x 750 x 530 mm |
| Power Control Method | High Frequency DC-DC Converter with MOSFET switch |
50V / 50A TR Unit
| Specifications | |
|---|---|
| Interrupted Mode of Operation | |
| High Voltage Protection | Protection over all inputs and outputs |
| Operating Modes | “• Automatic, Continuous • Manual, Constant Current, Interrupted • Manual, Constant Current, Continuous • Manual, Constant Voltage, Interrupted • Manual, Constant Voltage, Continuous” |
| On Time Adjustment Range | 0.1 – 99.9s (0.1 sec resolution) |
| Off Time Adjustment Range | 0.1 – 99.9s (0.1 sec resolution) |
| Reference Electrode | 1 true differential isolated input |
| Input Voltage Range | ±10V DC (±%1 +20mV) |
| Filtering | 50-60Hz Notch Filter allows unaffected DC measurements with superimposed AC voltages up to 13V |
| SCADA Output 1 | RS485-MODBUS RTU (Standard) |
| SCADA Output 2 (Optional) | “3 Channels 4-20mA Self Powered • Anode – Cathode Current • Anode – Cathode Voltage • Reference Electrode Voltage” |
| Contact Outputs | “4 Pcs Dry Contact Outputs • Automatic / Manual Operation • Interrupted / Continuous Operation • Faulty / Healthy • Power On / Off” |
| Warranty | 2 years (componensts and workmanship) |
| Parts and Service Warranty | 10 Years |
100 V / 50A TR Unit
| Specifications | |
|---|---|
| Input Voltage | 400V 50/60 Hz (±%10), 3 Ph |
| Input Current | 10A |
| Output Voltage | 0 – 100V DC (±0,25V) |
| Output Current | 0 – 50A DC (±0,25A) |
| Output Fuse | 63A Semiconductor Fuse |
| Short Circuit Protection | Electronic |
| Thermal Protection | 90°C ± 5°C (Heat Sink Temperature) |
| Efficiency | >%85 |
| Operating Temperature Range | -30, +60°C |
| Output Voltage Meter | 0 – 120V DC (±%1 +0.25V) |
| Output Current Meter | 0 – 61,44A DC (±%1 +0.25A) |
| Pipe to Soil Voltmeter | ±10V DC (±%1 +20mV) |
| IP Protection | IP54 |
| Dimensions | 1180 x 750 x 532 mm |
| Power Control Method | High Frequency DC-DC Converter with MOSFET switch |
| High Voltage Protection | Protection over all inputs and outputs |
| Operating Modes | “• Automatic, Continuous • Manual, Constant Current, Interrupted • Manual, Constant Current, Continuous • Manual, Constant Voltage, Interrupted • Manual, Constant Voltage, Continuous” |
100 V / 50A TR Unit
| Specifications | |
|---|---|
| Interrupted Mode of Operation | |
| On Time Adjustment Range | 0.1 – 99.9s (0.1 sec resolution) |
| Off Time Adjustment Range | 0.1 – 99.9s (0.1 sec resolution) |
| Reference Electrode | 1 true differential isolated input |
| Input Voltage Range | ±10V DC (±%1 +20mV) |
| Filtering | 50-60Hz Notch Filter allows unaffected DC measurements with superimposed AC voltages up to 20V |
| SCADA Output 1 | RS485-MODBUS RTU (Standard) |
| SCADA Output 2 (Optional) | “3 Channels 4-20mA Self Powered • Anode – Cathode Current • Anode – Cathode Voltage • Reference Electrode Voltage” |
| Contact Outputs | “4 Pcs Dry Contact Outputs • Automatic / Manual Operation • Interrupted / Continuous Operation • Faulty / Healthy • Power On / Off” |
| Warranty | 2 years (componensts and workmanship) |
| Parts and Service Warranty | 10 Years |
