Water Cooled
12V/15V 5000A–6000A 75kW Water-Cooled DC Rectifier
- TopologyHigh-Frequency IGBT
- Output12V–15V / 5000A–6000A
- ModeCV / CC Digital Display
- CoolingDeionized / Chilled Water
Industrial Catalog
High-Current DC Rectifiers & Custom Power Supplies
Engineered to deliver exceptional current density control, high dynamic response, and sub-1% ripple for critical surface treatment operations.
Hard Anodizing
100A–3000A Anodic Oxidation DC Rectifier
- TargetType II & Type III Anodizing
- Voltage0–24V / 0–60V Modulated
- Precision≤0.5% Setpoint Accuracy
- AutomationRS485 Modbus-RTU
Titanium Alloys
150V 50A Titanium Alloy Anodizing Supply
- SectorMedical & Aerospace Grade
- Output0–150V / 0–50A Controlled
- RampMulti-Step Voltage Profiles
- EnclosureIP32 Forced-Air Filtered
Galvanizing Heavy
8000A 12V Heavy-Duty Plating Rectifier
- Current8,000A Continuous Run
- CircuitDual Active Bridge Inverter
- ProtectionThermal, Over-V, Phase Loss
- Efficiency≥ 90.5% Peak Efficiency
Automated Descale
48V 625A Polarity-Reversing DC Power Supply
- FeaturesSolid-State Current Inversion
- TimingConfigurable 4-Stage Cycle
- Output30kW Continuous Industrial
- NetworkProfibus / Modbus Interface
High Voltage Test
800V 50A 20kW Programmable DC Source
- ApplicationMicro-Arc / EV Battery Pack
- Range0–800V Linear DC Output
- RegulationLine & Load < 0.1%
- StandardsCE Low Voltage / EMC
Cataphoretic Coating
5kW Electrophoretic E-Coat DC Power Supply
- ProcessCathodic & Anodic E-Coat
- ControlStepless Voltage Ramping
- RippleRMS < 0.5% Ultra-Smooth
- Interface0-10V Analog Remote Signal
Ultra High Current
300kW 20V 15,000A Electrolysis Rectifier
- Input380V/400V/480V 3-Phase AC
- Output20V Constant / 15,000A Peak
- BusbarT2 Solid Copper Internal
- CoolingIntegrated Water Chilled
Technical White Paper
Precision Current Control & Energy Economics for Nordic Anodizers
A technical evaluation of high-frequency switch-mode rectifiers versus legacy thyristor equipment in Swedish manufacturing ecosystems.
In the advanced manufacturing corridors stretching from Greater Stockholm through Södertälje, Västerås, and Linköping, aluminum surface treatment is shifting away from bulk commercial finishing toward high-precision functional coatings. Industrial sectors such as automotive electrification, marine hardware, medical robotics, and defense aerospace demand extreme coating homogeneity, narrow micron-tolerance film thicknesses, and verifiable metallurgical performance. Achieving these criteria while complying with rigorous environmental frameworks and elevated electrical utility costs requires a fundamental upgrade in rectification technology.
Traditional silicon-controlled rectifiers (SCR or thyristor systems) utilize line-frequency 50Hz transformation. When operating at partial load during voltage-ramp phases in hard anodizing, SCR units exhibit high current ripple (often exceeding 5% to 8%) and a poor power factor dropping below 0.70. High ripple directly introduces excessive Joule heating into the aluminum workpiece and acidic electrolyte, triggering localized dissolution of the anodic oxide barrier layer and causing "burning" or micro-cracking. In contrast, modern switch-mode IGBT (Insulated-Gate Bipolar Transistor) DC power supplies switch at frequencies between 20kHz and 50kHz. This delivers a virtually pure, ripple-free direct current with dynamic adjustment speeds under 10 milliseconds, enabling absolute barrier layer stabilization, denser cellular pore architecture, and up to 25% lower electrolyte cooling energy overhead.
| Performance Characteristic | Legacy SCR / Thyristor Rectifier | Fenvix High-Frequency IGBT Solution | Operational Impact in Stockholm Operations |
|---|---|---|---|
| Conversion Efficiency | 72% – 82% (Significant heat waste) | 90% – 94% Across 30–100% Load | Reduces factory power bills and heat emissions in closed facilities. |
| DC Current Ripple (RMS) | 4.0% – 8.0% (Higher at low voltages) | ≤ 1.0% Across Entire Operating Range | Eliminates burning, optimizes film hardness, and reduces acid chilling loads. |
| Power Factor (cos φ) | 0.65 – 0.78 (Generates reactive penalties) | ≥ 0.95 (Active correction available) | Complies with Vattenfall & Ellevio power quality standards without capacitor banks. |
| Dynamic Ramp Control | Slow analog response (100–300 ms) | Microsecond digital response (<10 ms) | Essential for precision titanium coloration and micro-arc oxidation routines. |
| Chassis Footprint & Mass | Heavy oil-filled or bulky cabinets | 1/3 Volume, 1/4 Weight, Modular Rack | Saves valuable floor space in high-rent urban and industrial zones. |
Local Integration
Regional Application Ecosystems in Sweden
Tailored rectification profiles engineered for specific Scandinavian industrial requirements, environmental criteria, and automated processing lines.
Automotive Electrification & Battery Enclosures
Heavy-duty aluminum heat sinks and battery tray casings fabricated around Södertälje and Gothenburg require dense, dielectric-insulating Type III hard anodized layers. Our 5000A–15000A water-cooled rectifiers maintain exact current density across complex profiles, eliminating dielectric breakdown under continuous high voltages.
Medical Technology & Surgical Implants
Precision medical device clusters in Solna and Uppsala rely on high-voltage DC power modules for color-coding and passivation of titanium orthopedic screws and surgical tools. Our 150V/50A digitally programmable units allow precise voltage-step regulation within 0.1V, achieving repeatable oxide interference colors.
Telecom & Electronics (Kista Innovation Cluster)
In Kista, advanced microwave radar housings, optical transceiver shells, and 5G chassis demand chemical nickel-gold plating and high-precision copper electrodeposition. Fenvix compact bench and rack-mount rectifiers deliver sub-millivolt stability for micro-via metallization with negligible electromagnetic interference.
Marine & Offshore Defense Hardware
Naval components and Baltic marine structural parts are subject to harsh brackish water corrosion. Hard coat anodizing according to MIL-A-8625 Type III requires cold-electrolyte processing at sub-zero temperatures. Our pulse-reverse and current-ramping power units generate abrasion-resistant oxide depths exceeding 50 microns without surface overheating.
Sustainable Water Treatment & Descaling
Municipal wastewater and industrial cooling circuits in the Mälardalen region employ electro-coagulation and electrolytic descaling to curb chemical usage. Fenvix automated polarity-reversing 48V/625A power units clean fouled electrodes automatically through timed inversion, eliminating chemical descaling down-time.
Industry 4.0 & Sustainability
Emerging Procurement Trends Across the Nordic Region
Understanding shifting technical, environmental, and digital mandates governing high-power electrical equipment investments.
Decarbonization & Heat Recovery
With Sweden's commitment to climate neutrality and volatile grid tariffs, surface finishers are eliminating air-cooled rectifiers that exhaust hot air inside conditioned workshops. Water-cooled rectifiers direct thermal losses into closed glycol loops that feed plant floor heating or municipal heat exchange circuits, reducing overall operational carbon footprint.
SCADA & OPC-UA Integration
Swedish OEMs require complete recipe-driven automation. Modern power supplies must abandon basic analog dials in favor of industrial fieldbus interfaces like Modbus-RTU, Profinet, and Ethernet/IP. Every anodizing run requires timestamped ampere-minute tracking, voltage-ramp verification, and alarm telemetry exported directly to plant MES databases.
Harmonic Compliance (EN 61000-3-12)
Scandinavian utility companies impose strict Total Harmonic Distortion (THDi) caps on major manufacturing consumers. Fenvix units feature optimized multi-phase front-ends and active power factor correction, maintaining THDi below regulatory limits and protecting neighboring robotics and sensitive laboratory instruments from grid pollution.
Why Partner With Us
Integrated OEM/ODM Capabilities Built on 13+ Years of Precision
From internal sheet-metal fabrication to automated 100% full-load burn-in, we eliminate intermediaries to deliver cost-effective engineering certainty.
In-House Metal Fabrication
We own and operate precision shearing, CNC punching, milling, drilling, and copper busbar tapping lines. Chassis design, heat sink geometry, and cabinet IP ratings are fully controlled under one roof.
ISO 9001 & TÜV Rheinland Verified
Certified under rigorous ISO 9001 management protocols. Our production facility and trade qualifications are verified on-site by TÜV Rheinland, with CE, RoHS, LVD, and EMC documentation available.
No Minimum Order Quantity (MOQ: 1 Set)
We actively support R&D institutions, university prototypes, and pilot facilities with single-unit custom builds, alongside high-volume scheduled delivery for Tier-1 production lines.
Direct Engineering Support
Consult directly with our electrical design team on voltage headroom, cable drop compensation, chiller pipe diameters, and control system pinouts before final purchase orders are issued.
Production & Testing Facility Infrastructure
Assembly Bay
Finished Units
Wiring Integration
Load Commissioning
Waveform Validation
CNC Sheet Metal
Procurement Clarity
Frequently Asked Questions by Scandinavian Buyers
Key technical, electrical, logistical, and warranty considerations addressed for buyers in Sweden.
Are Fenvix DC rectifiers compatible with standard Swedish three-phase 400V 50Hz mains?
Yes. Our standard export units configured for Sweden and the EU connect directly to 3-phase 400V AC (±10%) at 50Hz with a four-wire or five-wire configuration (L1, L2, L3, N, PE). We also manufacture units for 3-phase 480V or 690V industrial sites on request, complete with integrated surge suppression and phase-loss protection.
When should a Stockholm plating shop specify water-cooled over forced-air cooled rectifiers?
Water cooling is strongly recommended for high-current applications (typically 3000A and above), operations located inside corrosive chemical environments, or facilities with tight heat management requirements. In a water-cooled unit, the enclosure can be completely sealed (IP54 or IP65), preventing acid mists from corroding internal PCBs and IGBT gates. Furthermore, heat dissipated into the water circuit can be tied directly to external chillers or building heat recovery loops. Air cooling is suitable for dry test laboratories and lower amperage requirements (under 1500A).
How do you ensure ripple ratio remains below 1% during hard anodizing current ramping?
Unlike legacy thyristor rectifiers that exhibit heavy phase chopping and ripple spikes at low duty cycles, our power supplies utilize high-frequency PWM switching at 20kHz–50kHz coupled with precision LC smoothing filters. Even during initial soft-start voltage ramps from 0V to 15V, the high-frequency ripple factor is maintained at or below 1.0% RMS, preventing workpiece thermal etching and ensuring dense oxide growth.
What digital communication protocols are supported for automated plating line integration?
Standard units come equipped with isolated RS485 supporting standard Modbus-RTU. We routinely customize units with Profibus-DP, Profinet, Ethernet/IP, CANopen, or analog 0–10V / 4–20mA interfaces to enable direct PLC integration with systems from Siemens, ABB, Schneider Electric, or Beckhoff.
What export incoterms, logistics channels, and delivery timelines apply to Stockholm shipments?
We support CIF, FOB, FCA, and full DDP (Delivered Duty Paid) delivery directly to your facility in Stockholm, Gothenburg, or Malmö. Prototype and airfreight units reach Stockholm Arlanda (ARN) in 5–8 days, while sea freight to the Ports of Stockholm or Gothenburg takes approximately 28–34 days in fumigated seaworthy plywood crates. All customs clearance, VAT coordination, and import duty logistics can be managed under DDP terms.
What warranty coverage and technical commissioning assistance are provided?
Every power supply is covered by a 12-month comprehensive factory warranty, extendable up to 36 months under maintenance agreement. We supply full schematics, terminal block connection diagrams, and pre-commissioning checklists. In addition to video-guided factory testing prior to shipment, we provide remote video commissioning sessions and maintain rapid dispatch of replacement control boards and IGBT modules.