What information is needed to configure a custom industrial DC power supply?

Provide input voltage, phase and frequency; rated output voltage and current; control mode (CC, CV or both); required ripple; duty cycle; preferred cooling (forced air or water); control interface such as RS485 or analog; installation environment; and any target certification. Fenvix engineers use these to size the power stage, cooling and protection.

Is there a minimum order quantity?

No. Fenvix supports single-unit orders for prototypes, pilot lines and laboratory projects as well as batch production for OEM and ODM partners.

When should I choose a water-cooled rectifier instead of forced air cooling?

Water cooling is generally preferred for very high output currents, continuous 24/7 duty and plating or electrolysis shops where corrosive fumes, dust or high ambient temperature would shorten the life of air-cooled components. Forced air cooling suits most moderate-current and laboratory applications.

Which certifications does Fenvix hold?

Fenvix operates an ISO 9001 quality management system. Selected models carry CE, RoHS, LVD and EMC conformity, and the factory has been verified on site by TÜV Rheinland.

Which trade terms and payment methods are accepted?

Common terms include FOB, CFR, CIF, EXW, FCA, CPT, CIP, DDP and express delivery. Accepted payments include T/T, L/C, credit card, Western Union and MoneyGram, in USD, EUR, GBP, JPY, CAD, AUD, HKD, CHF or CNY.

Do you provide technical support for overseas buyers?

Yes. Fenvix offers free pre-sales technical consultation, commissioning guidance and after-sales support, and on-site technical support has been confirmed by an independent third-party assessment.

ISO 9001:2015 & CE Certified Engineering Standard

AC DC Rectifier Manufacturers & Manufacturer in the Plovdiv Market

Precision high-frequency IGBT rectifiers, switch-mode power supplies, and electrolytic power units tailored for the industrial fabrication, automotive anodizing, and electronics manufacturing hubs of Plovdiv and the Maritsa region.

Industrial Power Systems Profile

Engineering-Grade DC Rectification for South-Central Bulgaria

As the primary industrial capital of Bulgaria, the Plovdiv municipality—bolstered by the expansive Trakia Economic Zone (TEZ)—demands rigorous energy efficiency, low output ripple, and digital interface compatibility across metal finishing, machinery manufacturing, chemical processing, and aerospace testing installations.

13+ Years Engineering Direct OEM Production

≤ 1% Ultra-Low DC Voltage & Current Ripple

> 90% Conversion Efficiency via High-Speed IGBT

15,000A Maximum Deliverable Unit Direct Amperage

High-Current & High-Voltage Portfolio

Featured Industrial Rectifiers for the Plovdiv Market

Fully customizable topologies featuring digital programmable CV/CC modes, high-current busbars, water or forced-air cooling, and industrial fieldbus automation connectivity.

Water Cooled 12V 15V 5000A 6000A 75KW Water Cooled High Frequency Electroplating Rectifier

12V 15V 5000A 6000A 75KW Water Cooled High Frequency Rectifier

TopologyHigh-Frequency IGBT
Cooling MethodDeionized / Tap Water
Operation ModesDigital CV / CC
ApplicationGalvanic Hard Chrome / Zinc

Continuous Plating 12V 4000A 48KW High Frequency Electroplating Rectifier

12V 4000A 48KW High-Frequency Plating Rectifier

Output Capacity0-12V DC / 0-4000A
Efficiency≥ 90% at Rated Load
Control InterfaceRS485 Modbus / 4-20mA
ComplianceCE Mark, LVD Directive

8000A Heavy Duty Customized 8000A 12V Water Cooled Rectifier

8000A 12V High-Output Water-Cooled Galvanizing Rectifier

Rated Power96 kW Continuous
ProtectionThermal, Phase-Loss, Short
Cabinet GradeSealed IP54 Architecture
Typical SectorAutomotive Zinc & Wire Dip

Precision Anodizing 100A to 3000A 12V 24V Anodic Oxidation Rectifier

100A–3000A Anodic Oxidation DC Power Supply

Voltage Profile12V / 18V / 24V Selectable
Ramp ProfilesMulti-Step Current Slopes
Ripple Factor≤ 2% RMS for Smooth Oxide
Use CaseArchitectural & Mil Anodizing

Auto Reversing 48V 625A 30KW Programmable Auto Polarity Reversing Supply

48V 625A 30KW Polarity-Reversing DC Power Supply

Polarity SwitchingIntegrated Solid-State H-Bridge
Cycling TimerMillisecond to Multi-Hour
Control LogicProgrammable Multi-Segment
ApplicationDescaling & Electrodialysis

Ultra High Current Factory 300kW Three-Phase AC DC High Current Rectifier

300kW 20V 15,000A Heavy-Duty Electrolysis Rectifier

Grid Feed400V / 380V ±10% 50Hz
Amperage BandContinuous 15,000A DC
Busbar SystemIntegrated Pure Copper Links
ProtectionOver-Current, Transient Snubbers

Automotive & EV 800V 400V 50A 20KW High Voltage Adjustable DC Power Supply

800V 50A 20kW Programmable DC Switching Source

Voltage Regulation0-800V Fast Response
DisplayDigital 4-Digit Multi-Parameter
Analog SensingRemote Sensing Voltage Drop
Target UseEV Drivetrain Burn-In & ATE

Aviation DC GSE Portable 28.5V AC-DC Ground Power Unit

Portable 28.5V DC Aircraft Ground Power Unit (GPU)

Current Tiers100A, 200A, 400A, 600A Peak
Overload Capability300% Inrush for Turbine Crank
Design StructureMobile Castors / Hangar Frame
StandardizationMil-STD-704 & ISO Aviation

Localized Application Footprint

AC DC Rectifier Deployments Across Plovdiv & TEZ Clusters

Our power supply designs directly target the exact electrical, operational, and environmental dynamics found across the municipal and regional industrial sub-zones of Plovdiv.

Automotive Tier-1 & Tier-2 Finishing (Trakia Economic Zone)

The industrial corridor between Maritsa and Rakovski hosts advanced components manufacturing. Our high-frequency rectifiers deliver micro-ripple DC (<1%) crucial for corrosion-resistant zinc-nickel plating, hard chrome shaft deposition, and structural cathodic electro-coating (E-Coat), ensuring consistent film thickness and adhesion integrity.

Key Demand: Low ripple, continuous 24/7 duty cycle, RS485 automated dosing control

Mechanical Engineering & Machinery Construction (Plovdiv South)

Heavy hydraulic machinery, agricultural equipment, and specialized conveyor builders around Kuklen require robust anodic oxidation and electro-polishing equipment. Fenvix units offer programmable multi-stage voltage ramps to prevent metallurgical surface burning on custom alloys and hydraulic cylinder rods.

Key Demand: Soft-start slopes, high-amperage tolerance, robust short-circuit defense

Aviation MRO & Light Aircraft Ground Testing (Graf Ignatievo / Plovdiv Airport)

With operational aviation testing zones and aircraft repair facilities situated throughout the upper Thracian plain, stable 28.5V DC solid-state power systems replace legacy diesel-driven generators. Fenvix supplies clean, transient-free DC power during cockpit instrumentation avionics calibrations and engine cranking cycles.

Key Demand: Low harmonic distortion, mobile hangar deployment, instantaneous peak amps

Strategic Market Trends

Power Modernization Trends Shaping the Plovdiv Industrial Area

Industrial operators across Southern Bulgaria are systematically replacing outdated legacy silicon-controlled rectifiers (SCR) with modern switch-mode topologies to counter rising grid kWh costs and achieve strict EU decarbonization goals.

Engineering Attribute	Legacy Thyristor (SCR) Rectifiers	Modern Fenvix IGBT Switch-Mode Rectifiers	Direct Benefit to Plovdiv Operations
Electrical Conversion Efficiency	68% – 75% typical	90% – 93% constant	Reduces regional electrical overhead by 15-20% per plating tank line.
Output Current Ripple	5% – 10% root mean square	≤ 1% to 2% peak-to-peak	Eliminates micro-cracking in chrome layers; boosts zinc throwing power.
Footprint & Structural Mass	Heavy line-frequency transformers (2000kg+)	Compact modular assemblies (<450kg)	Permits mezzanine or tank-adjacent mounting, freeing valuable floor space.
Harmonic Distortion (THDi)	Substantial low-order harmonics backfed to grid	High power factor (≥0.95), low grid pollution	Evades utility penalty tariffs enforced under CE/EU distribution codes.
Cooling Protection Class	Open air-duct with high dust intake vulnerability	Closed-loop liquid cooling (IP54 / IP55 sealed)	Prevents acid vapor ingress; ideal for harsh sulfuric acid and pickling bays.

Factory-Direct Advantage

Guangdong Fenvix Technology: Custom Power Solutions

Established in 2013 and verified on-site by TÜV Rheinland, Fenvix maintains an end-to-end manufacturing footprint spanning in-house CNC sheet metal, heavy copper busbar fabrication, automated surface mounting, and rigorous burn-in test procedures.

Custom Engineering with Zero MOQ

We believe in flexibility for system integrators and specialized lines. From single-unit prototypes tailored for R&D benches in Sofia and Plovdiv to volume orders for multinational automotive production, we engineer without minimum order constraints.

Full In-House Metal & Electrical Fab

Equipped with our own plate shearing, punching, milling, drilling, and tapping machines, our technicians control mechanical tolerances, thermal design, and electrical integrity. Every copper busbar is silver-plated for low contact resistance.

Full-Scale Load Testing & Commissioning

Every industrial rectifier undergoes continuous full-current burn-in testing under dynamic resistive load benches before packaging. Waveform fidelity, thermal dissipation, and insulation ratings are validated with multi-channel digital oscilloscopes.

Main Assembly Workshop

Finished Rectifier Cabinets

Electrical Commissioning

Oscilloscope Load Testing

Buyer Reference & Specifications

Plovdiv Industrial Procurement FAQ

Key technical and commercial considerations for plant engineers, procurement directors, and maintenance heads sourcing AC DC industrial rectifiers.

What grid parameters are required to specify an industrial rectifier for a plant in Plovdiv?

Bulgaria operates on a nominal low-voltage grid standard of 400V 3-phase (±10%) at 50Hz. When placing custom specifications, confirm your transformer tap voltage, desired maximum DC output (volts and amps), ambient temperature range (summertime peak ambient in Plovdiv can reach 38°C–40°C), and preferred remote bus architecture (Modbus-RTU over RS485, Profinet, or standard 0-10V analog).

Under what operating circumstances is water cooling mandatory over forced-air cooling?

In heavy metal-plating operations (such as high-current hard chrome, anodizing baths, or acid pickling), ambient air is filled with acidic or alkaline vapors that can corrode internal power electronics. Water cooling allows the entire cabinet to be hermetically sealed (IP54 or higher), venting heat directly through a cooling tower or chiller loop. For continuous loads above 5000A, water cooling is strongly recommended.

Do Fenvix rectifiers conform to European Union CE, Low Voltage (LVD), and EMC regulations?

Yes. All export-designated rectifiers carry CE conformity, fulfilling the harmonized EN 61000-6-2 / EN 61000-6-4 Electromagnetic Compatibility standards and EN 60146 / EN 61010-1 Low Voltage Directives. Compliance dossiers and test certificates verified by TÜV Rheinland can be provided for municipal grid connection approvals.

What are the logistics arrangements, lead times, and Incoterms for delivery to Bulgaria?

We routinely ship under CIF or CFR terms to the Port of Burgas or Port of Varna, as well as door-to-door DDP to industrial premises within the Trakia Economic Zone. Standard production timelines for custom configurations range between 15 to 25 business days, followed by maritime freight or express air cargo for rapid emergency replacements.

How does Fenvix support international commissioning and field service in Eastern Europe?

All rectifiers are delivered with comprehensive English schematic drawings, terminal mapping diagrams, and pre-configured parameter tables. Our dedicated bilingual application engineering team provides live remote commissioning support via video link. On-site technical support has also been independently confirmed and can be scheduled for major turnkey installations.

Have a Non-Standard Power Requirement in the Plovdiv Area?

Share your required input AC, output DC parameters (V / A), duty cycle, and control specifications. Our engineering team will return a dimensioned proposal and electrical schematic review within one business day.