Active PFC
SP-500-12 12V 40A 500W Switching Power Supply with Active PFC & Cooling Fan
Active PFC > 0.95
12V 40A Output
Automation
18+ Yrs
Power Conversion R&D
TÜV Rheinland
Onsite Verified Facility
44 Verified
Technical Staff Onsite
4.8 / 5.0
Verified B2B Buyer Score
Export Catalog
Precision Power Electronics & Industrial Energy Systems
Tested under rigorous 100% full-load burn-in conditions and engineered to operate stably in high-humidity tropical conditions across Santo Domingo, Santiago, and Punta Cana.
IP67 Waterproof
LPV-60-24 60W 24V 2.5A IP67 Waterproof LED Driver AC DC Power Supply
IP67 Sealed
Anti-Corrosion
24V 2.5A
High Power 3KW
SV-3000 3KW Industrial Variable Power Supply 120A 60A for Laser & Plating
Variable 0-60A/120A
Laser / Plating
220V Input
Dual Frequency
100W Industrial AC/DC Switching Power Supply Wide Input 60Hz 50Hz
60Hz Dom. Rep. Ready
Wide VAC Input
Compact Frame
Triple Rail
T-30 30W Triple Output Switching PSU 5V 12V -5V/-12V for Instrumentation
Triple DC Rail
Automation Testing
Isolated Grounds
Adjustable High Voltage
3000W High Voltage DC Power Supply 110V 27.3A Adjustable Converter
110VDC Variable
Industrial B2B
Overload Clamp
IP67 Enclosed
LDV-100 Factory Direct 100W Waterproof LED Driver 12V 24V IP67 Transformer
Coastal Weatherproof
12V/24V Constant
Aluminum Housing
LRS Ultra-Thin
LEYU LRS-150-24 AC DC Switching PSU 150W 24V 6.5A for Industrial & LED
High Efficiency 89%
Low Profile 30mm
24V 6.5A
Engineered for the Caribbean
Localized Energy Challenges & Industrial Application Scenarios in Dominican Republic
Operating stationary power electronics in the Dominican Republic presents unique hurdles: fluctuating utility grids (EDESUR, EDEESTE, EDENORTE), frequent blackouts, high ambient heat, and salty maritime atmosphere.
Resort Hospitality & Eco-Tourism Microgrids
In tourist hotspots like Punta Cana, Bávaro, La Romana, and Las Terrenas, luxury hotels require zero-downtime, whisper-quiet pure sine wave inverters. Our industrial-grade units deliver ultra-low harmonic distortion (<3% THD) to safeguard sensitive electronic keycard locks, chillers, commercial espresso bars, and marine communications against destructive brownouts and high-line voltage spikes.
Free Trade Zones (Zonas Francas) & Manufacturing
Across industrial hubs like San Isidro, Santiago, and Haina, automated medical device production, textile processing, and CNC machinery demand uncompromised continuous DC rail stability. Deploying active PFC power supplies and heavy-duty 48V battery-coupled inverters prevents costly machine resets during momentary grid dropouts while lowering harmonic contamination to comply with rigorous IEEE-519 norms.
Commercial Refrigeration & Solar Pumping
Food distributors in Santo Domingo and agribusinesses in the Cibao Valley rely on uninterrupted refrigeration. Our pure sine wave inverters are built with a 300% peak surge buffer for inductive compressor starts. Paired with wide-input PWM and MPPT solar charging controllers, they form robust off-grid and peak-shaving architectures that counteract the high retail tariff structures of local distributors.
Market Intelligence
Dominican Clean Energy Shift: Grid Dynamics & Procurement Directives
Under the national renewable expansion targets and Law 57-07, the Dominican Republic is transitioning rapidly toward distributed solar-plus-storage. Understanding the technical synergy between battery chemistry and inverter topologies is vital for Dominican wholesalers and engineering contractors.
| Application Category | Dominican Grid Challenge | Recommended Keldan Topology | Key Engineering Safeguard |
|---|---|---|---|
| Industrial CNC & Automation | Substation frequency sags (58.5Hz - 61.5Hz) | Active PFC SMPS (SP-500, DRP-240) + TS35 | EN 61000-4-11 voltage sag immunity, PF > 0.95 |
| Coastal Lighting & Marinas | Corrosive salt aerosol & tropical rains | LPV-60-24 / LDV-100 IP67 Waterproof Drivers | Fully potted silicon heat sinking, sealed aluminum casing |
| Off-Grid Solar Telecom Towers | Lightning transients & high ambient heat (>40°C) | Pure Sine Inverter + PWM Charge Controller | Auto-recovery OVP/OCP, isolated DC bus, zinc-plated anti-rust |
| CCTV Surveillance Systems | Continuous low-voltage dropouts & brownouts | LRS-150-24 / LRS-350 Multi-Rail Enclosed SMPS | Wide 85-264VAC input range, 105°C electrolytic long-life caps |
| Electroplating & Laser Workshops | High starting inrush currents and back-EMF | SV-3000 Variable Heavy-Duty Converter | Digital encoder regulation, forced active air cooling tunnel |
Manufacturing Capability
Direct Factory Verification & Engineering Credentials
Headquartered in Yueqing, Wenzhou—China's global capital for electrical apparatus—Yueqing Keldan Technology Co., Ltd. combines an 18-year engineering heritage with rigorous third-party auditing.
TÜV Certified
Onsite Inspected Facility
Verified directly by TÜV Rheinland covering precision SMT production, automated reflow soldering, QA testing, and global export qualification.
100% Reliability
Full-Load Burn-In Racks
Every single power unit undergoes 100% high-temperature full-load aging tests before packing to eradicate infant mortality failure rates.
OEM / ODM Custom
In-House R&D Engineers
Staffed by 5+ senior SMPS design engineers, ready to customize dual 110V/220V 60Hz settings, specialized enclosures, and bespoke terminal pinouts.
Logistics Ready
Seamless Caribbean Shipping
Exporting to the Americas for over a decade. Experienced in consolidated sea containers to Port of Rio Haina, Caucedo, and air cargo to Santo Domingo (SDQ).
Purchasing FAQ
Dominican B2B Buyer FAQ & Technical Clarifications
Common questions asked by electrical contractors, hardware importers, and solar engineers from the Dominican Republic.
Are your inverters and power supplies pre-calibrated for 60Hz and 110V/220V?
Yes. The Dominican electrical grid operates at 60Hz (typically 110V-120V single-phase, and 220V-240V split-phase). All our export equipment can be factory-configured with native 60Hz quartz crystal resonators and dual-voltage input selector switches to eliminate operational strain and overheating on inductive motors.
Why is pure sine wave superior to modified sine wave for Dominican installations?
While modified sine wave units are cost-effective for basic resistive heating or lighting, Dominican commercial setups frequently power air conditioning compressors, refrigeration pumps, and telecommunications gear. Pure sine wave output maintains a total harmonic distortion (THD) under 3%, preventing motor buzzing, overheating, and circuit board burnout.
How do your units withstand high humidity and saline coastal air?
For seaside operations in Boca Chica, Punta Cana, or Puerto Plata, we offer conformal acrylic coating on PCB assemblies to shield traces against salt air oxidation and fungus. Outdoor series (such as LPV and LDV) feature IP67 structural encapsulation with silicone injection and anti-corrosive aluminum heat spreaders.
What is the minimum order quantity (MOQ) and sample lead time?
Standard industrial power supplies and off-the-shelf pure sine wave inverters are available for sampling from 1 unit. Enclosed LRS or waterproof drivers typically start at 10-15 pieces. Prototype samples are dispatched within 3-5 working days; container shipments to Rio Haina or Caucedo port carry an average transit window of 25-32 days.
Do you provide OEM private labeling for Dominican distributor brands?
Absolutely. We provide end-to-end OEM and ODM customization: silk-screened company logos, custom voltage trim-pot adjustments, bespoke wire harnesses, Spanish-language user manuals, and master cartons designed to meet local customs clearance guidelines.
What warranty and technical recourse do you offer overseas buyers?
All Keldan power products are supported by a standard 2 to 3-year factory replacement warranty. We maintain detailed serial-number tracking for each PCB batch, with full electrical burn-in test records retrievable on demand by your engineering team.
Partner with an Audited Chinese Power Supply & Inverter Factory
Whether you require a custom 12V/24V/48V pure sine wave inverter series, active PFC power modules, or complete OEM container fulfillment for Dominican distribution, our engineering team is ready to analyze your technical drawings and provide a turnkey proposal.
