ABNT NBR 5356 & IEC Compliant · 60Hz Engineered

33kV Power Distribution Transformers Manufacturer & Suppliers for the Brazil Market

Industrial-grade medium voltage transformers, rectifier power units, and custom substation solutions built for severe tropical duty, mining, solar utilities, and heavy electrolysis across Brazil.

Brazil Market Featured Transformer Products

High-reliability, heavy-duty 33kV distribution and specialized rectifier transformers custom-configured for Brazilian industrial grids, 60Hz frequencies, and challenging climatic environments.

Electroplating & DC YUCOO Plating Rectifier 220v Ac to 12v Dc Electroplating Rectifier

YUCOO Plating Rectifier 220v Ac to 12v Dc 50a 500a 1000 Amp Electroplating Rectifier

Precision DC power supply engineered for continuous heavy industrial electroplating, anodizing, and electrolytic surface treatment line operation in Brazilian metallurgical plants.

Input / Output:220V AC / 12V DC
Current Capacity:50A - 1000A
Efficiency Rate:≥ 92%
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3-Phase Rectifier Factory Direct Sales Three Phase Control Electrical Rectifier Transformer

Factory Direct Sales Three Phase Control Electrical Rectifier Transformer

Heavy-duty 3-phase industrial control rectifier transformer designed to regulate DC voltage stability for automated manufacturing lines and drives in São Paulo industrial corridors.

Phase / Frequency:3-Phase / 60Hz
Primary Voltage:Up to 33kV Class
Cooling System:ONAN / ONAF
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High Current 6300kVA Oil Immersed High Current 6300kva Transformer Cathodic Protection Rectifier Transformer

Oil Immersed High Current 6300kva Transformer Three Phase Cathodic protection Rectifier Transformer

Substantial oil-immersed 6300kVA high-current rectifier unit customized for large-scale pipeline cathodic protection and heavy electrolytic refining plants across Minas Gerais.

Power Rating:6300 kVA
Insulation Type:Mineral / Synthetic Oil
Protection Grade:IP55 / NEMA 4X
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Step-Down Control 380V/220V to 60V 48V 24V 12V AC to DC Control Rectifier Transformer

380V/220V to 60V 48V 24V 12V 6V AC to DC Transformers 2000VA 5KVA Single-phase Control Rectifier Transformer

Compact multi-tap single-phase control rectifier transformer built for low-voltage auxiliary industrial automation cabinets and control circuitry isolation in Brazilian processing plants.

Capacity Range:2000VA - 5KVA
Secondary Taps:6V / 12V / 24V / 48V / 60V
Standards:IEC 61558 / NBR
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Cast Resin Dry-Type CEEG ZQSC(H)B SERIES 2000kVA 10kv EPOXY CAST TRACTION RECTIFIER DRY-TYPE

CEEG ZQSC(H)B SERIES 2000kVA/10kv EPOXY CAST TRACTION RECTIFIER DRY-TYPE Air-Insulated Rectifier Transformer

Flame-retardant epoxy cast resin traction rectifier transformer engineered for urban metro transit grids, commercial complexes, and indoor industrial facilities in Rio de Janeiro.

Capacity:2000 kVA / 10kV-33kV
Thermal Class:Class H (180°C)
Fire Safety:Self-extinguishing F1
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Excitation System ORIGINAL T6 Electric Power Rectifier Transformer TI16933 For HUNYDAI HFC6 Excitation system

ORIGINAL T6 Electric Power Rectifier Transformer TI16933 For HUNYDAI HFC6 Excitation system

High-precision replacement excitation transformer designed specifically for generator excitation control systems, delivering ultra-stable dynamic voltage response.

Compatibility:HFC6 Excitation
Winding Core:High Permeability Silicon
Reliability:Continuous Duty 24/7
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33kV Medium Voltage Control 33kv 300kva 1 Mw Voltage Transformer Sealed Rectifier Transformer

Control 33kv 300kva 1 Mw Voltage Transformer 220v to 110v 400kva High Quality 160kva Sealed Rectifier Transformer

Hermetically sealed 33kV class power transformer designed for regional utility primary step-down, solar substation coupling, and heavy industrial distribution networks in Brazil.

Voltage Class:33kV / 34.5kV Primary
Rating Range:160kVA to 1MW+
Structure:Hermetically Sealed Oil
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Modular Step-Up 50KVA to 3000KVA Transformador 3 Phase Step up Rectifier Transformer

50KVA 100KVA 200KVA 250KVA 300KVA 400KVA 800KVA 1000KVA 3000KVA Transformador 3 Phase Step up Rectifier Transformer

Versatile 3-phase step-up transformer series engineered for agricultural power grids, renewable energy generation integration, and regional utility distribution throughout Brazil.

Flex Capacity:50kVA - 3000kVA
Frequency:60Hz Native Standard
Tap Changer:Off-Circuit / OLTC
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17+
Years Manufacturing Legacy
33kV / 10 MVA
Max Voltage & Capacity
ABNT NBR
5356 Standard Compliance
60 Hz
Brazil Grid Optimized Cores

Localized Application Scenarios across Brazil

Brazil's diverse industrial topography demands specialized electrical infrastructure tailored to regional environmental conditions, grid regulations (ONS/ANEEL), and specific operational loads.

Mining & Mineral Extraction (Minas Gerais & Pará)

High-altitude iron ore complexes and copper mines in Carajás demand heavy-duty 33kV oil-immersed distribution transformers with enhanced vibration resistance, heavy-duty conservator tanks, and specialized dust-sealed bushings capable of resisting severe particulate contamination and cyclic overloads.

Utility Solar PV & Wind Farms (Northeast Region)

In high-solar irradiance regions like Bahia, Piauí, and Ceará, our solar inverter-duty step-up transformers (33kV/34.5kV class) are customized with multi-winding secondary configurations, electrostatic shielding to attenuate high-frequency inverter harmonics, and low-loss magnetic cores to boost overall solar farm ROI.

Heavy Chemical & Electroplating (São Paulo & South Hubs)

Industrial parks in ABC Paulista rely heavily on our high-current 3-phase rectifier transformers and DC plating power supplies. Built to handle ripple control, high secondary current output (up to tens of thousands of Amperes), and corrosive chemical ambient vapors with epoxy-coated radiators and C4/C5 marine anti-corrosion paint finish.

Sugarcane Ethanol & Agro-Industrial Plants (Mato Grosso)

Bioenergy co-generation plants and large-scale grain processing silos require rugged step-up and distribution units capable of dual-mode operation during harvest peak seasons, integrating automatic On-Load Tap Changers (OLTC) to stabilize grid voltage fluctuations across long rural transmission feeders.

Coastal Infrastructure & Offshore Terminals (Santos & Macaé)

To combat marine salt fog and humidity reaching 98% in coastal port facilities, we engineer cast resin dry-type transformers (Class H insulation) and stainless-steel tank oil units with hermetic sealing, preventing moisture ingress and dielectric oil degradation.

Urban Metro Traction & Commercial Substations

Densely populated urban centers like Rio de Janeiro and São Paulo require compact dry-type traction rectifier transformers with low acoustic noise footprint, high fire resistance ratings (Class F1), and minimal environmental impact for indoor basement substations.

Strategic Industry Insight: Brazil's Medium Voltage Grid Evolution

Brazil's electrical grid operates under a unique framework monitored by ANEEL (National Electric Energy Agency) and coordinated by ONS (Operator of the National Electricity System). The market is experiencing a rapid structural transition: utilities and private developers are expanding distribution primary voltages from traditional 13.8kV towards higher-capacity 33kV and 34.5kV networks to reduce line transmission losses over expansive distances. Furthermore, Brazil’s strict 60 Hz operating frequency standard requires precise magnetic core calculation to prevent saturation and excess no-load loss when importing international electrical plant equipment.

33kV Transformer Technical Architecture Matrix

Technical comparison of medium-voltage transformer topologies optimized for Brazilian procurement specifications.

Technical Parameter 33kV Oil-Immersed Distribution 33kV Cast Resin Dry-Type Industrial Rectifier Transformer
Rated Voltage Class 33kV / 34.5kV to 0.44kV / 0.38kV / 13.8kV 33kV / 10kV to 0.4kV / 0.48kV Primary 33kV / Secondary Multi-tap AC to Rectifier
Grid Frequency Compliance 60 Hz (Brazil Standard) 60 Hz (Brazil Standard) 60 Hz (Brazil Standard)
Standard Compliance ABNT NBR 5356 / IEC 60076 ABNT NBR 5356-11 / IEC 60076-11 IEC 60146 / IEEE C57.18.10
Cooling Medium / Rating ONAN / ONAF (Mineral or Ester Fluid) AN / ANAF (Natural/Forced Air) ONAN / OFWF / Water-Cooled Options
Ambient Temperature Rating Up to 45°C Tropical Continuous Up to 50°C Heavy Indoor Duty Up to 45°C Continuous Full Load
Short-Circuit Withstand Dynamic & Thermal Tested per NBR High Mechanical Stress Resistance Enhanced Core Clamping for Rectifier Duty
Typical Applications Utility Substations, Mining, Sugar Mills Metros, Hospitals, High-Rise Buildings Electroplating, Cathodic Protection, Smelters

Why Brazilian Procurement Leaders Choose Our Transformers

Combining over 17 years of specialized transformer manufacturing experience with rigorous quality management to deliver compliant, resilient, and energy-efficient power solutions.

Custom 60Hz Magnetic Core Optimization

Unlike standard off-the-shelf 50Hz designs, every transformer supplied to Brazil features core flux densities tailored specifically for 60Hz operating conditions using premium cold-rolled grain-oriented (CRGO) silicon steel sheets, guaranteeing exceptionally low core losses (Level 3 efficiency) and minimal noise.

Complete Type Testing & Quality Verification

Our manufacturing plant operates under ISO 9001, ISO 14001, and ISO 45001 certified management systems. Every 33kV distribution and rectifier unit undergoes comprehensive routine testing (winding resistance, voltage ratio, phase displacement, impedance, insulation resistance, and dielectric breakdown) with available third-party laboratory verification (KEMA/CESI standards).

Tropicalization & Marine Corrosion Protection

Engineered specifically for Brazil's severe tropical climate zones (C4 to C5 marine environments). Featuring anti-corrosion poly-urethane paint coats, hot-dip galvanized cooling radiators, UV-resistant gaskets, and silica gel or maintenance-free dehydrating breathers to extend operational service life past 30 years.

Full OEM/ODM Customization Capability

From specialized high-current secondary busbars for electroplating plants to multi-pulse (12-pulse, 18-pulse, 24-pulse) rectifier phase-shifting windings that eliminate system harmonics, our engineering team provides full CAD design customization based on your single-line diagram (SLD).

Seaworthy Export Packaging & Logistics Support

We provide complete export logistics management directly to major Brazilian maritime ports including Port of Santos, Paranaguá, Rio de Janeiro, and Suape. All transformers are packed in heavy-duty vacuum-sealed moisture barrier bags within reinforced ISPM-15 compliant wooden cases.

Dedicated Engineering Lifecycle Service

Our commitment extends throughout the asset lifecycle. We offer remote pre-commissioning guidance, spare parts availability (bushings, OLTC controllers, Buchholz relays, temperature indicators), and technical assistance tailored to EPC contractors and plant managers.

Brazil Market B2B Procurement FAQ

Answers to common technical, regulatory, and logistical questions raised by Brazilian electrical engineers, buyers, and EPC contractors.

Q1: How do your 33kV transformers adapt to Brazil's 60Hz power grid frequency compared to standard 50Hz models?

Brazil operates exclusively on a 60Hz grid frequency. Operating a standard 50Hz transformer on a 60Hz system at rated voltage results in reduced magnetic flux density, which is generally acceptable for the core, but affects reactance and voltage regulation. Conversely, our transformers designed specifically for Brazil feature optimized magnetic core cross-sections and winding turn ratios calculated precisely for 60Hz operation, ensuring optimal voltage regulation, reduced excitation current, and maximum energy efficiency compliant with ABNT standards.

Q2: Do your transformers comply with ABNT NBR 5356 and ONS grid connection guidelines?

Yes. All our medium-voltage distribution transformers, power transformers, and dry-type units intended for export to Brazil are engineered in strict alignment with ABNT NBR 5356 (Parts 1 through 11) specifications, as well as international IEC 60076 standards. We supply comprehensive factory test reports (Routine & Type Tests) required by Brazilian electrical distribution utilities and ONS grid connection compliance reviews.

Q3: What cooling and insulation options are best suited for high-temperature and humid tropical regions in Brazil?

For outdoor substations in northern and northeastern Brazil, where ambient temperatures exceed 40°C and humidity is high, we recommend ONAN/ONAF oil-immersed transformers equipped with high-flashpoint mineral oil or biodegradable synthetic ester fluid (Class K). For indoor applications, such as commercial towers or underground transit, our epoxy cast resin dry-type transformers (Class H insulation, 180°C rating) provide superior moisture immunity and zero fire hazard without requiring liquid containment pits.

Q4: How are custom rectifier transformers configured for electroplating and cathodic protection in Brazilian industry?

Our industrial rectifier transformers are configured to interface seamlessly with 6-pulse, 12-pulse, or 24-pulse thyristor/diode rectifiers. For heavy electroplating, we offer low-voltage high-current secondary outputs with integrated step-less voltage regulation. For cathodic protection along oil/gas pipelines or maritime docks, we supply hermetically sealed units with fine-step voltage taps and heavy DC choke filtering to prevent ripple disruption.

Q5: What is the typical shipping lead time and customs document support for Santos or Paranaguá ports?

Manufacturing lead time typically ranges from 4 to 8 weeks depending on kVA capacity and custom specifications. Sea freight transit from our factory to major Brazilian ports (Santos, Paranaguá, Suape) takes approximately 30 to 40 days. We provide a complete export documentation package (Commercial Invoice, Packing List, Certificate of Origin, Bill of Lading, and Factory Test Certificates) to facilitate smooth clearance through Brazilian Receita Federal customs.

Q6: Can your transformers be equipped with automatic On-Load Tap Changers (OLTC) for solar farm integration?

Absolutely. For renewable energy applications (solar PV and wind) in Brazil, power generation varies dynamically throughout the day. We integrate high-reliability OLTC units (or Off-Circuit Tap Changers) equipped with smart automatic voltage regulators (AVR) to maintain stable grid coupling at 33kV/34.5kV, fully meeting utility interconnect power quality mandates.

Request a Technical Quotation for Your Brazil Project

Consult with our senior transformer application engineers today. Send us your single-line diagram (SLD), voltage ratios, and kVA requirements for a competitive factory-direct quote.