75kW Heavy Duty
12V/15V 5000A–6000A 75kW Water-Cooled DC Rectifier
- TopologyHigh-Frequency IGBT
- CoolingClosed-Loop Liquid
- Control Precision≤ ±0.5% (CV / CC)
- Ripple Factor≤ 2% Full Scale
Heavy-Duty Hardware Lineup
Standard & Custom Variable DC Power Architectures
Designed for continuous 24/7 duty cycles, our high-frequency switched-mode DC power supplies and industrial rectifiers deliver constant current (CC) and constant voltage (CV) precision with lower ripple and up to 93% operational efficiency.
48kW Electro-Finishing
12V 4000A 48kW High-Frequency Switch-Mode Rectifier
- Input Voltage380V / 415V AC 3-Phase
- Cooling MethodForced Air / Water
- Regulation ModeDigital CV / CC Shift
- CommunicationRS485 / Modbus RTU
8000A Galvanizing
8000A 12V Water-Cooled Heavy Industrial Plating Rectifier
- Output Current0–8,000A Continuous
- EnclosureNEMA 4X / IP54 Sealing
- TransformerNanocrystalline Core
- ProtectionOver-Temp / Phase Loss
High-Voltage EV
800V/400V 50A 20kW Programmable DC Test Supply
- Output Voltage0–800V DC Adjustable
- Efficiency≥ 92% at Full Load
- ProgrammingStep, Ramp, List Loops
- CertificationsCE, EMC, LVD, RoHS
Capacitor Charging
80kW 1000V–3200V Precision High-Voltage DC Source
- Voltage Span1000V / 2000V / 3200V
- Rated Power80kW Parallel Expandable
- Line Regulation≤ 0.1%
- ApplicationsPlasma, HV Insulation Test
Electrochemical Descaling
48V 625A 30kW Auto-Polarity Reversing DC Supply
- Cycle TimingIndependent Forward/Reverse
- Switching Time≤ 50ms Solid-State Transition
- ProtectionShort-Circuit / Anti-Corrosion
- Core SectorWastewater & Mineral Refining
Megawatt Scalability
300kW 20V 15000A Heavy Smelting & Heating Rectifier
- Output Power300kW (Master-Slave Array)
- Max Amperage15,000A Continuous
- Busbar TypeSolid Electrolytic Copper E-CU
- Thermal MonitorIndividual Branch Sensors
Aviation Ground Support
28.5V DC (100A–600A) Military/Aviation Ground Power Unit
- Continuous / Peak600A Cont. / 2000A Peak Start
- StandardMIL-STD-704F / ISO 6858 Compliant
- Chassis TypeAll-Terrain Mobile Tow Cart
- Operating Temp-40°C to +55°C Resilient
Regional Deployment Analysis
Localized Industrial Power Demands in Choibalsan & Dornod
Engineering solutions adapted to Eastern Mongolia's extreme continental weather extremes (-40°C winter floors), fluctuating utility grids, and rigorous extraction demands.
Polymetallic Electrowinning & Refining
The Dornod province surrounding Choibalsan hosts prominent mineral reserves, including fluorite, zinc, lead, and uranium deposits. Our heavy-duty DC rectifiers provide uninterrupted constant-current extraction loops essential for electro-refining cells and heap leaching processes where grid brownouts and harmonic distortion typically derail standard rectifiers.
Choibalsan TPP & Heavy Grid Modernization
As the Choibalsan Thermal Power Plant expands generation capacity to stabilize eastern regional loads, industrial facilities require isolated, programmable DC power conversion. Our variable DC supplies act as an isolated power layer, dampening volatile AC input swings (±20% line voltage tolerance) while supplying stable DC busbars for field excitation and industrial motor testing.
Sub-Zero Thermal & Anti-Scale Processing
Eastern Mongolian operations run through extended sub-zero freezes. Our variable polarity-reversing DC units are integrated into municipal heating circuits, thermal pipelines, and mineral processing facilities to eliminate limestone scale deposition and electrolytically pretreat recirculating process water without chemical coagulants.
| Industrial Segment | Common Local Configuration | Choibalsan Field Environmental Risk | Fenvix Engineering Countermeasure |
|---|---|---|---|
| Flotation & Smelting | 15V–30V, 5000A–15000A Continuous | High airborne dust, coal-fired particulate ingress | Cabinet IP54 isolation; liquid-to-air sealed heat exchangers |
| Hydrometallurgy Leaching | 48V–100V, 1000A–3000A Polar-Reversing | High acidity, chemical fumes corroding terminal lugs | Nickel-plated busbars, 3-proof conformal board coating |
| Railway & Aviation Maintenance | 28.5V DC / 115V AC 400Hz GPU Units | Ambient temperatures dipping to -42°C in deep winter | Internal thermostatically controlled pre-heating mantles |
| Substation DC Backing | 110V / 220V DC Battery Charging Banks | Harmonic resonance and load dropouts on remote lines | IGBT solid-state fast response (<5ms), active PFC (≥0.98) |
Market Dynamics 2025–2030
Technological Modernization of Power Conversion in Eastern Mongolia
Choibalsan stands as Mongolia's premier eastern industrial node, anchoring trans-regional corridors connecting China, eastern provinces, and the Russian trans-Baikal logistics channels. Historically, industrial plants across Dornod, Khentii, and Sukhbaatar relied heavily on legacy silicon-controlled rectifiers (SCR) and motor-generator sets imported during the late 20th century. These units, characterized by poor dynamic response, high line ripple (upwards of 8–12%), and lagging power factors (0.65–0.75), heavily stress localized diesel-fired and thermal grid nodes.
Three driving market trends are accelerating the shift toward solid-state variable DC power architectures:
1. Decoupling Efficiency from Thermal Waste: At heavy loads, switched-mode IGBT rectifiers operating at frequencies between 20kHz and 50kHz lower system losses by over 20% compared to legacy transformer-rectifier sets. In operations running 24/7 continuous electrowinning cells, this efficiency gain saves hundreds of thousands of kilowatt-hours annually per 1,000kVA deployed.
2. Integration with Distributed Renewables: With solar-wind hybrid projects gaining traction across the Mongolian steppe, fluctuating feeder inputs require DC sources with ultra-wide input margins, rapid microsecond-range closed-loop compensation, and integrated digital bus communication (Modbus, Profibus, EtherCAT).
3. Transition to Water-Cooled Enclosures: Given the severe combination of dry dust storms in spring and sub-zero blizzards in winter, open forced-air cooling paths suffer from clogged filters and premature component dielectric failure. Sealed liquid-cooling topologies isolate sensitive IGBT modules and silicon chips within airtight, controlled-temperature chassis.
ISO 9001 Certified Factory
Guangdong Engineering Center | Direct Factory Shipments
Manufacturing Capability
Direct Factory Engineering from Guangdong to Global Ports
Guangdong Fenvix Technology Co., Ltd. eliminates commercial intermediaries. As an integrated research, sheet metal, and electrical assembly manufacturer established in 2013, we deliver bespoke high-power solutions without minimum order constraints.
Zero MOQ & Full OEM/ODM Customization
Whether supplying a single pilot prototype for university mineral testing or commissioning a 15,000A electrolytic plant rack, we enforce no minimum order volume. Engineering customization encompasses enclosure metallurgy, custom footprint constraints, specialized PLC interfaces, and harsh-environment thermal heating loops.
In-House Sheet Metal & Busbar Fabrication
Cabinet chassis, copper busbar milling, drilling, tapping, and structural frames are fabricated directly in our 3,000m² factory. By maintaining complete command over mechanical tolerance, thermal airflow simulation, and internal EMC shielding, we compress design-to-delivery lead times by 35% compared to assembly-only brokers.
TÜV Rheinland Verified & CE Certified
All units are tested under full resistive and inductive load banks before dispatch. Fenvix operates under a rigid ISO 9001 quality infrastructure, holds on-site verification from TÜV Rheinland, and models adhere to European Low Voltage Directive (LVD 2014/35/EU) and Electromagnetic Compatibility (EMC 2014/30/EU) protocols.
13+
Years Industry Engineering
3,000m²
Direct Manufacturing Floor
15,000A
Max Continuous Current Build
100%
Full Load Burn-In Inspected
Procurement Whitepaper FAQ
Frequently Asked Questions by Industrial Sourcing Teams
Direct engineering clarifications addressing technical selection, logistics to Eastern Mongolia, sub-zero protection, and warranty support.
What parameters are required to size a variable DC power supply accurately? +
To provide an exact engineering recommendation and thermal footprint, provide:
(1) Utility Input: Nominal AC voltage (e.g., 380V/400V/415V), phase count, and grid frequency (50Hz);
(2) DC Output: Maximum voltage span and peak/continuous operating current;
(3) Regulation Mode: Constant Voltage (CV), Constant Current (CC), or automatic cross-over;
(4) Duty Cycle: Operational hours per day and ambient plant temperature ranges;
(5) Permissible Ripple: ≤1%, ≤2%, or ultra-low laboratory tolerance (≤0.1%);
(6) Cooling Environment: Availability of chilled industrial water loops or reliance on forced air.
How do your variable DC supplies handle Choibalsan's -40°C winter temperatures? +
Standard commercial power electronics suffer semiconductor embrittlement and electrolytic capacitor ESR spikes when started in unheated shelters at sub-zero temperatures. For our export units destined for Eastern Mongolia, northern China, or Siberia, Fenvix incorporates integrated thermostatic cabinet heaters, low-temperature rated switching components, conformal 3-proof circuit board coatings, and closed-loop liquid systems with ethylene glycol anti-freeze compatibility.
When should an engineering team specify liquid cooling over forced air? +
Liquid (water/glycol) cooling is advised when: (a) Output current exceeds 4000A, where air heatsinks require impractically bulky chassis; (b) The ambient plant environment contains airborne acidic fumes, conductive graphite dust, or coal fly ash from power plants that quickly degrade air fans; (c) The installation room has limited external ventilation. Liquid cooling completely isolates internal electronic assemblies from external ambient air inside sealed IP54+ enclosures.
What are the shipping routes, customs delivery terms, and lead times to Choibalsan? +
Fenvix supports major Incoterms, including EXW, FOB (Tianjin/Shenzhen/Guangzhou), CIF (Ulaanbaatar or Manzhouli), and DAP/DDP land transport. Heavy industrial units are securely crated in ISPM-15 compliant seaworthy/railway wooden cases with moisture-barrier internal wrapping. Shipments typically transit by rail or truck via the Erenhot–Zamiin-Uud corridor or the northern Manzhouli border crossing directly to Dornod Province. Typical fabrication lead time is 15–25 business days depending on customization complexity.
What PLC protocols and remote monitoring architectures are supported? +
All Fenvix industrial rectifiers and variable DC power supplies are outfitted standard with isolated RS485 communication utilizing the industrial Modbus RTU protocol. We additionally accommodate analog 0–5V, 0–10V, or 4–20mA remote setpoint and telemetry control, as well as digital dry-contact outputs for fault alarms, phase trips, and thermal shutdown. Optional industrial Ethernet (Modbus TCP, Profinet) interfaces are available upon request for SCADA integration.
What post-commissioning warranty and spare parts support is provided? +
We provide a 12 to 24-month comprehensive factory warranty on all components. Because our systems are designed with modular field-replaceable units (FRUs)—including isolated gate drive boards, high-speed circuit breakers, and standardized IGBT modules—field maintenance is straightforward. We provide wiring schematics, full load-test documentation, and immediate remote engineering video support. Emergency replacement modules can be expedited directly via international air courier.
Connect with Fenvix Power Conversion Engineers
Consult directly with senior application specialists to configure your input voltage, continuous current capacity, control automation, and protective enclosures for installations in Choibalsan and international territories.
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