Engineered with high input tolerance (100-240VAC) and over 90% power efficiency, designed to combat voltage fluctuations in Bangkok and EEC industrial parks.
Thailand's industrial sector is undergoing a massive shift led by the "Thailand 4.0" development plan and the expansion of the Eastern Economic Corridor (EEC). From the advanced auto parts manufacturing plants in Rayong to Chonburi's electronics fabrication cleanrooms, modern automated production lines demand clean, continuous, and highly efficient electrical power.
However, tropical climates bring localized challenges. High humidity, seasonal monsoon storms, and ambient temperatures frequently exceeding 40°C in unconditioned facilities put extreme stress on standard power conversion units. Furthermore, non-linear industrial loads (such as robotic arms, CNC machining centers, and heavy HVAC systems) generate harmonic currents that can degrade grid quality. This results in strict utility standards set by the Provincial Electricity Authority (PEA) and the Metropolitan Electricity Authority (MEA) concerning Power Factor (PF) correction and Total Harmonic Distortion (THD) limits.
Unlike passive PFC configurations, Active Power Factor Correction (Active PFC) uses high-frequency boost converters to shape the input current waveform. This keeps the input current in phase with the mains voltage, keeping THD below 10% and improving overall efficiency.
From vehicle fleet step-down modules to precision laboratory voltage regulators, explore our secondary catalog engineered to exact safety specifications.
A look at the circuitry that makes our power supplies the choice of electrical contractors and system integrators in Southeast Asia.
Our systems utilize a Continuous Conduction Mode (CCM) Boost topology. This minimizes peak ripple currents in the input filter, reducing high-frequency noise emissions and prolonging the operating lifespan of surrounding electronic controls.
Supporting a nominal input of 100-240VAC, our active PFC design handles fluctuations from 90VAC up to 264VAC. This eliminates voltage-sag shutdowns common in regional industrial corridors outside major metropolitan areas.
Each active PFC circuit includes automatic protections for over-voltage (OVP), over-current (OCP), short-circuit (SCP), and over-temperature (OTP). The system recovers automatically once fault conditions clear.
| Performance Parameter | Wemaxpower Active PFC Solutions | Standard Passive PFC Products | Impact on Thailand Industrial Users |
|---|---|---|---|
| Power Factor (PF) | > 0.99 | 0.70 - 0.80 | Eliminates low-PF grid surcharges under PEA guidelines. |
| Total Harmonic Distortion (THD) | < 8% to 10% | 30% - 45% | Protects nearby machinery and PLCs from high-frequency lineside noise. |
| Input Voltage Range | 90 - 264 VAC (Full Range) | Fixed 115V or 230V manually switched | Runs reliably through grid voltage drops in remote industrial areas. |
| Physical Size & Weight | Compact, High Power Density | Heavy, uses bulky choke coils | Integrates into standard 19-inch racks and control enclosures. |
With 7 years of manufacturing experience, Wemaxpower specializes in industrial power electronics. Our product range includes programmable DC power supplies, step-down converters, and high-efficiency active PFC power modules.
To ensure reliability in demanding industrial environments, every product undergoes our 4-step Quality Control (QC) process:
Specialized Testing Department
Precision Assembly Operations
Automated PCBA SMT & Soldering Processes
IQC Inspection Stage
100% Full Load Aging Testing
Logistics & Quality Audits
Our core industrial-grade models, configured for various voltages and output wattages, with full active power factor correction built-in.
Important technical and regulatory details to help your engineering and procurement teams import from China to Thailand.
Electrical equipment imported into Thailand must align with guidelines established by the Thai Industrial Standards Institute (TISI). While low-voltage DC industrial modules do not always require mandatory TISI licensing, the primary AC mains inputs must comply with electrical safety standards matching IEC 60950-1 or the newer IEC 62368-1.
Wemaxpower builds all active PFC power supplies to comply with European CE safety standards, making it easier for system integrators to secure local regulatory approvals in Thailand.
Thailand uses a nominal single-phase utility voltage of 220VAC at 50Hz. Industrial spaces frequently operate with three-phase 380VAC/400VAC configurations. Our power units handle single-phase inputs from 100VAC to 240VAC (+/- 10% range tolerance), matching standard industrial wiring conditions across Bangkok, Nonthaburi, and Chonburi.
Wemaxpower offers engineering support to modify our active PFC units for specific project requirements. Standard customization options include:
Answers to common technical and logistical questions from engineers, buyers, and project planners in Thailand.
Our industrial power supplies are designed for environments with up to 90% non-condensing relative humidity. For high-humidity areas, we offer optional conformal PCB coating. This protection helps prevent leakage currents and oxidation on delicate surface-mount components, extending the service life of units in unconditioned industrial plants.
Active PFC units keep the power factor above 0.99 and limit total harmonic distortion (THD) below 10%. In comparison, passive PFC models often yield power factors below 0.80 and higher THD. Utilizing active PFC helps factories meet the strict power quality requirements of the Provincial Electricity Authority (PEA) and protects sensitive local automation hardware from electrical noise.
Standard model orders typically ship within 10 to 15 business days. Shipments are sent from our Shenzhen factory to ports in Thailand (such as Laem Chabang or Bangkok Port) via air freight (3-5 days) or sea freight (8-12 days). We provide complete documentation, including commercial invoices, packing lists, and Certificates of Conformity, to streamline customs clearance.
Our standard active PFC models accept single-phase AC input (100-240VAC). To connect these to a three-phase power source (such as 380V/400V), the input should be wired phase-to-neutral (yielding 220VAC). For three-phase inputs, please contact our engineering team to discuss compatible higher-power configurations.
Our products are manufactured to meet CE standards, which align with major international safety requirements (EN 62368-1 / EN 60950-1). We also implement an ISO9001-certified quality control system, ensuring consistent performance for every batch shipped to the Thai market.
Contact our engineering support team for product inquiries, bulk order pricing, technical specifications, and localized support options tailored to the Thailand industrial market.
Wemax Power
