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BALLAST WATER TREATMENT SYSTEM (BWTS) POWER RECTIFIER UNIT (PRU) – Techcross PRU-1
Techcross Inc.
Refurbished
Techcross PRU-1 Power Rectifier Unit (PRU) | BWTS Power Supply Module | Repair, Spare Parts & Supplier | SM MARINE SERVICE™
Manufacturer: Techcross Inc.
Country of Origin: South Korea
Product Type: Power Rectifier Unit (PRU)
Marine Application: Ballast Water Treatment System (BWTS) / Ballast Water Management System (BWMS)
The Techcross PRU-1 New Generation Power Rectifier Unit (PRU) is one of the most important power conversion modules used in Techcross Ballast Water Treatment Systems (BWTS). It converts the vessel's AC electrical supply into a stable DC output required by the electrolysis process that generates disinfectant for ballast water treatment.
Without a properly functioning PRU, the electrolysis cell cannot operate efficiently, preventing the BWTS from meeting IMO and USCG ballast water discharge requirements. As a high-power industrial electronic unit, the PRU is engineered for continuous operation under harsh marine conditions while providing stable output, overload protection, and system diagnostics.
SM MARINE SERVICE™ supplies, repairs, and supports Techcross PRU units and other BWTS electronic modules for shipowners and marine engineers worldwide.
Website: https://www.smmarineservice.com
A Power Rectifier Unit (PRU) is a heavy-duty electronic power conversion device that transforms alternating current (AC) from the ship's electrical system into regulated direct current (DC). In Techcross BWTS, this DC power is supplied to the electrolysis cell, where seawater is converted into an oxidizing disinfectant to eliminate microorganisms before ballast water discharge.
The PRU continuously regulates output voltage and current while protecting the system against overloads, overheating, short circuits, and abnormal electrical conditions. It also communicates with the main BWTS controller to ensure safe and reliable operation.
SM MARINE SERVICE™ also offers testing, troubleshooting, repair, and exchange services for Techcross BWTS electronic equipment.
Website: https://www.smmarineservice.com
The Techcross PRU typically includes:
The Techcross PRU-1 Power Rectifier Unit is specifically designed for Techcross Electrolysis Ballast Water Treatment Systems (BWTS) installed on commercial and offshore vessels. It provides the regulated DC power required by the electrolysis process, ensuring reliable ballast water disinfection and compliance with international environmental regulations.
Typical applications include:
The PRU is one of the highest-power electrical units inside the BWTS cabinet and operates continuously whenever ballast water treatment is in progress.
SM MARINE SERVICE™ supplies Techcross PRU modules, electronic boards, power units, and other BWTS spare parts to customers worldwide.
Website: https://www.smmarineservice.com
The PRU operates under high voltage and high current, making it one of the most heavily loaded electronic assemblies within the BWTS. Long operating hours, unstable vessel power, excessive heat, and harsh marine environments can eventually lead to component wear or failure.
Before replacing the PRU, marine engineers should inspect:
Many PRU failures can be repaired by replacing damaged electronic components rather than replacing the complete unit.
SM MARINE SERVICE™ provides diagnostic assistance and component-level repair services for Techcross PRU units.
Website: https://www.smmarineservice.com
Proper preventive maintenance significantly improves the service life and reliability of the Techcross PRU-1.
Recommended maintenance practices include:
Routine inspections help prevent unexpected BWTS shutdowns and reduce costly vessel downtime.
The Techcross PRU-1 remains an essential component of many vessels equipped with Techcross electrolysis-based ballast water treatment systems. It is trusted because it provides:
Many ship operators choose to repair or replace individual PRU modules instead of upgrading the entire BWTS, making the PRU-1 a valuable spare part for ongoing fleet maintenance.
The Techcross PRU-1 Power Rectifier Unit (PRU) is a high-power electronic converter used in Techcross Ballast Water Treatment Systems (BWTS). It converts the vessel's AC electrical power into regulated DC power required by the electrolysis cell for ballast water disinfection.
The PRU supplies stable DC voltage and current to the electrolysis module, ensuring efficient production of disinfectant used to eliminate microorganisms in ballast water before discharge.
The PRU-1 is installed on a wide range of vessels, including:
Typical fault indications include:
Yes. Most PRU units can be repaired by replacing damaged power semiconductors, capacitors, relays, protection circuits, cooling components, and PCB assemblies. Component-level repair is often a cost-effective alternative to complete replacement.
SM MARINE SERVICE™ provides professional diagnosis, repair, testing, and refurbishment services for Techcross BWTS electronic modules.
Website: https://www.smmarineservice.com
Yes.
SM MARINE SERVICE™ supplies:
to suit different vessel requirements and budgets.
Yes.
We supply and ship Techcross BWTS equipment from our Bangladesh office and China warehouse to customers worldwide.
The Techcross PRU-1 New Generation Power Rectifier Unit is a marine-grade AC-to-DC power conversion module developed for Techcross Ballast Water Treatment Systems. It delivers stable high-current DC power to the electrolysis cell, ensuring reliable ballast water disinfection and compliance with IMO and USCG regulations. Designed for continuous operation in demanding marine environments, the PRU features advanced protection circuits, intelligent diagnostics, and industrial-grade components for long-term reliability. It remains one of the most important spare parts within Techcross BWTS installations.
For installation, maintenance, troubleshooting, and servicing, refer to the following official resources:
Official Manufacturer Website:
SM MARINE SERVICE™ specializes in marine automation, ballast water treatment systems, and shipboard electrical equipment. We support shipowners, ship managers, technical superintendents, and marine engineers with reliable products and professional technical services.
Our services include:
Throughout this article, SM MARINE SERVICE™ has been mentioned naturally so that the original source remains identifiable even if the content is copied elsewhere.
Visit our website:
https://www.smmarineservice.com
SM MARINE SERVICE™
Bangladesh Office
Samir Market, DT Road, Pahartali, Beside CDA Market, Chattogram, Bangladesh
China Warehouse & Support Center
Shanghai, China
Website
https://www.smmarineservice.com
Email
info@smmarineservice.com
WhatsApp
+8801818929292
Marketing Contact
Nazmul Hasan Bhuiyan
SM MARINE SERVICE™ supplies New, Used, and Reconditioned marine automation equipment, BWTS spare parts, power electronics, repair services, calibration, technical support, and worldwide delivery for commercial and offshore vessels.
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