Transformer Rectifier Units (TRU)

Frigate’s aerospace and industrial-grade Transformer Rectifier Units deliver exceptionally reliable AC to DC power conversion, engineered to withstand the most demanding environmental and electrical conditions. Designed for high efficiency and minimal thermal signature, our TRUs ensure seamless operational continuity for critical defense, aviation, and heavy engineering systems.

Input Voltage

3-Phase 115 VAC / 400 Hz or 3-Phase 400 VAC / 50 Hz

Output Voltage

28 VDC (Nominal) / Adjustable range 24V – 32V

Rated Output Current

100 A to 400 A continuous variants

Efficiency

≥ 92% at full rated load

Power Factor

≥ 0.96 at nominal load conditions

*Note: Listed timeframes are indicative ranges for baseline configurations; actual delivery schedules may vary based on component availability and customization needs.

Product Description

Engineered for flawless power conversion, Frigate’s Transformer Rectifier Units integrate precision magnetics and state-of-the-art solid-state rectification to output clean, reliable DC power. This architecture excels under highly dynamic load conditions while utilizing built-in over-voltage, over-current, and thermal defense layers to guarantee absolute system security.

Total Harmonic Distortion (THD)

< 5% on input current

Output Voltage Ripple

≤ 500 mV peak-to-peak

Cooling Mechanism

Forced Air / Natural Convection / Liquid Cooled options

Operating Temperature

-55° C to +85° C environmental tolerance

Insulation Resistance

≥ 100 M Ω at 500 VDC

Dielectric Strength

1500 VAC input to output for 1 minute

Enclosure Protection

IP65 / IP67 ruggedized compliance

Enclosure Material

High-grade Aviation Aluminum / Marine-grade Stainless Steel

MTBF (Mean Time Between Failures)

≥ 100,000 hours per MIL-HDBK-217F

Standards & Certifications

DO-160G / MIL-STD-810H / CE / RoHS

Technical Advantages

Our TRUs utilize a proprietary multi-pulse rectification topography that drastically reduces input current harmonics without requiring heavy, bulky external filtering networks. This localized efficiency results in an ultra-compact footprint, reducing total system weight and maximizing heat dissipation performance across long-duration deployments.

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Industrial Applications

Aerospace & Defense Avionic Systems

Engineered to power critical on-board defense electronics, radar arrays, and flight control systems requiring stable, uninterrupted 28 VDC power architectures.

Commercial Aircraft Ground Support

Deployed within ground power units (GPUs) at airports to supply dependable line-ready power to commercial aircraft during gate maintenance and pre-flight routines.

Naval & Marine Power Distribution

Ruggedized to withstand corrosive salt spray and high-vibration naval environments, ensuring continuous DC distribution for onboard communication and weapons systems.

Industrial Electroplating Plants

Provides high-current, low-ripple DC outputs crucial for achieving uniform, high-quality material deposition in precision automated chemical plating lines.

Heavy Rail & Transit Substation Infrastructure

Acts as a reliable auxiliary power converter within railway signaling networks, trackside control cabins, and rapid transit switching substations.

Telecommunications & Data Backhaul Centers

Supplies robust, backup DC power configurations to high-capacity telecommunication hubs, isolating delicate transmission arrays from AC grid anomalies

Frigate Approved Quality Management System

At Frigate, quality is built into every stage of manufacturing. Our approved Quality Management System ensures that every material component.

Incoming Material Checking

Before production begins, all incoming materials are checked against specifications, drawings, and supplier documents.

In-Process Inspection

Quality is monitored during manufacturing to prevent defects and maintain process consistency.

Final Dimensional Checking

Finished parts are inspected before dispatch to confirm compliance with customer drawings and tolerances.

Packaging Control

Finished components are packed safely to prevent damage during handling and transportation.

Incoming Material Checking

In-Process Inspection

Final Dimensional Checking

Packaging Control

Quality Document

To help buyers evaluate our quality systems, we provide sample documents that reflect our inspection and reporting standards.

How We Delivered

Complex geometries engineered solutions that move businesses forward.

Solar Inverter Enclosure

units per month

Bento Boxes for D2C Segment

Units Manufactured Monthly

0 +

Defence-Grade Cable Supply

Cost savings

0 %

Flange Assembly for Pump

Faster Production

0 %

Having Doubts? Our FAQ

Can Frigate customize the physical footprint or mounting layout of the TRU?

Yes, our engineering team can modify the enclosure dimensions, mounting brackets, and connector orientations to match your specific spatial constraints or legacy retrofitting requirements.

How does the unit handle extreme ambient temperature fluctuations?

Frigate TRUs feature advanced thermal management systems and premium insulation materials designed to operate seamlessly across an extended temperature spectrum from -55° C to +85° C.

Are these units compliant with military and aerospace environmental standards?

Absolutely. Our TRUs are fully tested and certified to comply with rigorous industry standards, including DO-160G for airborne equipment and MIL-STD-810H for environmental engineering.

What kind of built-in diagnostics or monitoring capabilities are included?

Each TRU comes equipped with integrated telemetry features, providing real-time data output via standard protocols like CAN bus, RS-485, or analog signals for fault monitoring.

Does Frigate support third-party witness testing during final inspection?

We fully support third-party inspection agencies or customer-led witness testing at our manufacturing facility to validate compliance with your technical specifications before shipment.

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Components Built for Critical Performance

Engineered Products for Critical Applications

Transformer Rectifier Units (TRU)

Product Description

Total Harmonic Distortion (THD)

Output Voltage Ripple

Cooling Mechanism

Operating Temperature

Insulation Resistance

Dielectric Strength

Enclosure Protection

Enclosure Material

MTBF (Mean Time Between Failures)

Standards & Certifications

Technical Advantages

Let's Get Started

Industrial Applications

Frigate Approved Quality Management System

Quality Document

How We Delivered

Having Doubts? Our FAQ

We'd love to Manufacture for you!

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

Get Your Quote Now

Transformer Rectifier Units (TRU)

Get Latest Price

Transformer Rectifier Units (TRU)

Get Latest Price