Voltmat Power Voltmat Power

China Top Open Frame Power Supply Manufacturers & Exporter

Customizable High-Efficiency AC-DC Switching Regulated Power Solutions | 15 Years of Engineering Excellence & Global Integration

Our Flagship High-Power & Industrial Power Supplies

Explore our highly reliable, adjustable AC-DC and DC-DC power supply series designed for heavy industrial environments, testing laboratories, and battery charging infrastructure.

36V-17000W High-Reliability Safety DC Switching Power Supply
36V-17000W High-Reliability Safety DC Switching Power Supply Single Three-phase 88%-89% Efficiency for Battery
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36V-600W Industrial High-Power Single Output AC-DC Switching Power Supply
36V-600W Industrial High-Power Single Output AC-DC Switching Power Supply 50/60Hz 2kg 88-89% Efficiency 1 Year Warranty
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Output 150V- 10000W DC Power Supply
Output 150V- 10000W DC Power Supply with High-Power Digital Display & Adjustable Function 24V-1000V
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Output 110V-2000W High-Power DC Stabilized Switching Power Supply
Output 110V-2000W High-Power DC Stabilized Switching Power Supply (Industrial Grade) with 12V-600V Voltage Option
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Output 150V-16000W High-Power AC-DC Switching Power Supply
Output 150V-16000W High-Power 89% Efficiency 1 Year Warranty Safety AC-DC Single Output DC Switching Power Supply (24V-1000V)
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12V 600W-1000W Adjustable Single Output Industrial Use Regulated AC-DC Power Supply
12V 600W-1000W Adjustable Single Output Industrial Use Regulated AC-DC Power Supply
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Output 15V-700W Linear Regulated Power Supply
Output 15V-700W Linear Regulated Power Supply 700W Regulated Power Supply 12V-500V Voltage Options
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48V-400W High Efficiency 89% Safe Stable DC Single Output Switching Regulated Power Supply
48V-400W High Efficiency 89% Safe Stable DC Single Output Switching Regulated Power Supply 1 Year Warranty for Laboratory
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15+
Years R&D Expertise
10,000㎡
Advanced Shanghai Factory
99.9%
Factory Qualification Rate
100%
Dual-Stage Quality Audited

Pioneering Open Frame Industrial Power Technologies

As a leading name in the global power conversion space, our Shanghai-based facility stands at the intersection of robust manufacturing infrastructure and cutting-edge power topologies. We specialize in engineering and exporting highly reliable open frame and enclosed AC-DC/DC-DC switching power supplies designed to meet the rigorous demands of industrial automation, testing laboratories, battery systems, and commercial networks.

Our commitment to 99.9% product reliability starts at the layout level. By integrating high-grade capacitors, planar transformers, and optimized heat dissipation structures, we achieve standard efficiency ratings of 88%-89% and customizable solutions scaling up to 24,000W.

  • Direct Export Port Logistics: Convenient, cost-effective global shipping from Shanghai.
  • Dual Quality Validation: Every unit undergoes comprehensive automated system and manual diagnostic checks.
  • Reinforced Export-Grade Packaging: Integrated moisture barriers, shock-absorbent cushioning, and rigid wooden frame reinforcements.
Industrial Power Supply Aging Test

Open Frame Power Architecture: A Technical Whitepaper

Understanding efficiency, compliance, thermal management, and localized integration in critical infrastructure applications.

1. Overview of Open Frame Switching Topologies

Open frame power supplies are defined by their lack of an enclosed metal chassis, designed instead to be integrated directly into a larger device's enclosure. This design significantly optimizes thermal flow and space efficiency while reducing overall weight and component cost. Modern industrial systems demand switching topologies that minimize power loss through Zero Voltage Switching (ZVS) or Zero Current Switching (ZCS) methodologies.

Our open frame structures utilize advanced topologies that limit electromagnetic interference (EMI) at the source. This is vital when the power supply is located in close proximity to sensitive logic boards, transducers, and analog measurement channels. With efficiency metrics ranging from 88% to 89%, our power solutions minimize waste heat, translating directly to a longer Mean Time Between Failures (MTBF) for both the power supply and host system.

2. Localization Support and Regulatory Compliance

Deploying power systems across varying geographical regions requires deep understanding of localized electrical grids, environmental standards, and safety directives.

  • Voltage Adaptability: Global power distribution ranges from single-phase nominal 110V/230V AC up to industrial three-phase 380V/480V systems. Our equipment supports variable configurations to stabilize voltages from 12V up to 1000V DC.
  • Safety Standards: Design principles conform to EN 62368-1 (Audio/video, information and communication technology equipment safety) and IEC 61010-1 for laboratory instruments.
  • Electromagnetic Compatibility (EMC): Embedded EMI filters ensure compliance with EN 55032 Class B limits, protecting surrounding digital infrastructure from high-frequency switching noise.

"Compliance is not merely about certification marks; it is about guaranteeing localized electrical safety and long-term equipment survival under volatile grid conditions."

3. The China Factory Supply Chain Advantage

Operating out of Shanghai gives us access to one of the most mature, vertically integrated industrial electronics supply chains in the world.

From high-grade magnetic cores and specialized copper windings to robust power MOSFETs and silicon carbide (SiC) diodes, all primary components are sourced within a tight regional radius. This proximity reduces logistical lead times and material costs, allowing us to offer highly competitive pricing without sacrificing components' grade. Additionally, being situated in the Shanghai logistics hub means we can offer immediate, seamless ocean, air, and rail freight access to ensure your deliveries stay on schedule.

4. Global Procurement & Integration Demands

Modern procurement agents and OEM design engineers look beyond simple voltage and current ratings. They need integration assurances. We satisfy these criteria by providing detailed mechanical CAD drawings, thermal profile reports, and custom wiring configurations.

Whether you require an open frame unit to slot into a compact 1U server chassis, a ruggedized design to withstand constant vibration, or a regulated DC source capable of delivering 16,000W of battery charging power, our engineering team designs for manufacturing (DFM).

5. Industry Evolution & Technology Trends

The switching power supply market is undergoing significant transitions. Key trends driving our current R&D pipeline include:

  • Wide Bandgap Semiconductors: Integrating Gallium Nitride (GaN) and Silicon Carbide (SiC) switches to push switching frequencies higher, reducing the footprint of magnetic components.
  • Digital Control Loops: Replacing classic analog control circuits with digital signal processors (DSPs) to allow dynamic calibration, telemetry monitoring, and smart power management via CAN-bus or Modbus.
  • Eco-design Regulations: Reducing standby power losses to meet stringent ERP directives globally.

Standard Technical Envelopes

  • Input Voltage Range 110V - 380V AC (1Φ / 3Φ)
  • Output Voltage Range 12V - 1000V DC (Adjustable)
  • Power Output Capacity 400W - 24,000W+
  • Typical Efficiency 88% - 89%
  • Cooling Method Convection / Forced Air
  • MTBF Metric > 100,000 Hours
  • Integrated Protection OVP, OCP, OTP, SCP
  • Regulatory Alignments CE, RoHS, EN 62368-1

State-of-the-Art Production & Testing Facilities

19 sequential manufacturing, assembly, and quality assurance nodes at our 10,000㎡ facility ensuring a 99.9% pass rate.

Design Stage
Design
Winding Machine Process
Winding Machine
Wire Cutting Machine
Wire Cutting Machine
Wire Cutting manual step
Wire Cutting
Plug-In Process
Plug-In
Automatic Soldering Machine
Automatic Soldering Machine
Soldering Tin Step
Soldering Tin
Laser Engraving Machine
Laser Engraving Machine
Canning Machine
Canning machine
Glue Filling Process
Glue Filling
Assembly Line
Assembly Line
Testing Phase
Test
DC Power Supply Tester
DC Power Supply Tester
AC Withstand Voltage Tester
AC Withstand Voltage Tester
Constant temperature and humidity chamber
Constant Temp Chamber
Optical microscope inspection
Optical microscope
Burn-In Test
Burn-In Test
Packaging
Packaging
Aging test run
Aging test

Engineered for Global Industries

Our power supplies are deployed in high-stress, precision settings worldwide, bringing reliability to mission-critical systems.

1. Laboratory & Research Settings

High-precision testing requires stable power inputs. Our units provide ultra-low ripple characteristics, digital output displays, and fine adjustment controls. These features make them a preferred choice for research labs deploying adjustable DC power setups from 24V up to 1000V.

2. Battery Charging Infrastructure

Industrial battery packs demand precise charging profiles. Our heavy-duty safety switching power supplies, such as the 36V-17000W system, support multi-phase inputs and high-efficiency outputs (88%-89%). This allows for rapid, thermal-monitored charging cycles for heavy industrial electric machinery.

3. Automation & Heavy Machining

Factory settings subject electrical equipment to high ambient temperatures, vibration, and dust. Our ruggedized, open-frame design supports integration directly into sealed control panels. Additionally, our automated wire cutting and tinning processes prevent mechanical failures under vibration.

Technical FAQ & Procurement Guide

Insights from our FAE (Field Application Engineering) department to assist your selection process.

How does an open-frame power supply handle heat without a built-in fan?
Open-frame power supplies rely on natural convection cooling, conduction cooling via mounting frames, or system-provided forced airflow. By eliminating the metal enclosure, we allow hot components (such as magnetic inductors and power transistors) to transfer heat directly to the surrounding ambient air. Proper thermal derating curves must be calculated based on airflow configurations.
What testing procedures guarantee the 99.9% product qualification rate?
Every product goes through two rounds of verification before leaving the factory. First, automated testers analyze electrical parameters under various input/output conditions. Second, manual inspection verifies mechanical structure, solder joint integrity, and thermal efficiency. Each unit is subjected to high-temperature burn-in tests to filter out premature component failures.
Can you customize outputs for high-power demands?
Yes. Our standard systems scale from 400W up to 24,000W. We provide custom adjustable output ranges (e.g., 24V to 1000V DC) and support single or three-phase line feeds to match industrial grid requirements in the EU, Americas, and APAC regions.
What measures are taken to secure the power supplies during sea freight?
To prevent oxidation and salt-air damage during transit, we pack each power supply in multi-layered moisture-proof barriers. We use high-density foam padding to absorb mechanical shock. For heavy cargo, the cartons are secured on reinforced wooden frames to prevent movement during transit.

Highly Optimized Industrial Switching Solutions

Review additional configurations engineered to support high voltage regulation and stable power output under dynamic loads.

150V Industrial Grade AC-DC Adjustable Voltage Regulating Switching Power Supply
150V Industrial Grade AC-DC Adjustable Voltage Regulating Switching Power Supply Single High Efficiency 88%-89% 1 Year Warranty
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24000W AC-DC Adjustable Voltage Regulating Switching Power Supply
24000W AC-DC Adjustable Voltage Regulating Switching Power Supply with 24V-1000V Options Single Output 50/60Hz
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High Power DC Regulated Adjustable AC-DC Switching Power Supply 12000W
High Power DC Regulated Adjustable AC-DC Switching Power Supply with Single Output 12000W 24V-1000V
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Output 72V-1800W Adjustable High-Voltage DC Power Supply
Output 72V-1800W Adjustable High-Voltage DC Power Supply 12V-600V Optional
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Output 36V- 3000W AC-DC DC Stabilized Switching Power Supply
Output 36V- 3000W AC-DC DC Stabilized Switching Power Supply 12V-1000V High Efficiency 1 Year Warranty for Heavy-Duty Industrial
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36V-700W Industrial High-Power DC Switching Power Supply
36V-700W Industrial High-Power DC Switching Power Supply AC-DC 110-380V Input 88%-89% Efficiency High Stability Reliability 1
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AC-DC Multi-Input Switching Single Output 20000W DC Power Supply
AC-DC Multi-Input Switching Single Output 20000W DC Power Supply 24V-1000V Industry Use
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110V-700W Industrial High-Power Single Output AC-DC Power Supply
110V-700W Industrial High-Power Single Output AC-DC Power Supply with 89% Efficiency 2kg Weight (1 Year Warranty)
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