Ultra-Slim SMPS
LEYU LRS-150-24 AC DC Switching Power Supply 150W 24V 6.5A Single Output SMPS for Industrial Equipment LED Lighting
24V DC / 6.5A
1U Low Profile
Efficiency >89%
18+
Years Engineering Excellence
300VAC
Surge Withstand (5 Seconds)
TÜV
Rheinland Onsite Verified
100%
Full-Load Burn-In Tested
Factory Direct Catalog
Precision-Engineered Single Output Power Systems
Tested rigorously under elevated thermal conditions and power rail stress to ensure seamless deployment in Mariel Special Development Zone (ZEDM), Havana infrastructure, and provincial industrial zones.
Engineering White Paper
Engineering Power Conversion for Cuban Environmental and Grid Realities
Procuring single output power supplies for the Republic of Cuba requires an engineering paradigm distinct from temperate or highly stable grid markets. The convergence of Caribbean humidity, hypersaline coastal atmospheres, and electrical grid instability demands component-level resilience.
As an established manufacturing plant certified by TÜV Rheinland in Yueqing, Zhejiang, we address the unique technical variables encountered by state entities (such as BK Import/Export, COPEXTEL, and UNE) and foreign joint ventures operating in the Zona Especial de Desarrollo Mariel (ZEDM). In Cuba, power supplies encounter wide electrical variance—often shifting unpredictably from nominal 110V/220V levels down to severe brownouts or up to transient spikes. Standard off-the-shelf commercial power supplies without protective overhead will suffer premature MTBF depletion, primarily driven by capacitor burst and MOSFET avalanche degradation.
Agro-Industrial & Sugar Mills (Centrales Azucareros)
Single output SMPS modules like our EDR-240-24 and S-360-24 provide ultra-rugged DC rails for programmable logic controllers (PLCs), optical sorters, and fluid valves. Designed to resist dust, intense bagasse particulates, and ambient temperatures routinely exceeding 40°C in processing sheds.
Coastal Tourism & Resort Infrastructure
Varadero, Cayo Coco, and Havana waterfront hotels demand silent, waterproof power conversion. Our LPV-60 and LDV-100 IP67 sealed drivers utilize fully potted vacuum encapsulation to eliminate internal copper oxidation induced by persistent coastal salt spray and high relative humidity.
Telecommunications & Remote Microwave Sites
Coupled with battery banks and PV systems across central Cuba, our high-surge units handle irregular utility supplies. Features including 300VAC input surge tolerance for 5 full seconds and Class B EMI shielding ensure uninterruptible DC delivery to telecom multiplexers and CCTV backbones.
Medical Devices & BioCubaFarma Cleanrooms
Cuba's advanced biopharmaceutical biotechnology manufacturing lines in Havana rely on ultra-low output ripple and noise. We configure custom DC filter stages achieving ripple below <30mVp-p, protecting delicate diagnostic laboratory sensors and fermentation monitoring rigs.
Technical Parameter Matrix: Standard vs. Cuba-Hardened Specifications
| Design Dimension | Generic Commercial Grade | Keldan Cuba-Resilient Industrial Grade | Engineering Strategic Impact |
|---|---|---|---|
| AC Voltage Fluctuation | 100–120V / 200–240V ±10% | 85–264VAC Universal Wide Input | Maintains stable 12V/24V output even during severe local grid dropouts. |
| Surge Input Tolerance | No dynamic overvoltage margin | 300VAC Withstand for 5 Seconds | Prevents front-end capacitor and MOV destruction caused by grid power restoration. |
| Conformal Coating | None (Standard Bare PCB) | MIL-I-46058C Grade Conformal Coating | Complete barrier against tropical humidity, condensation, and saline ambient air. |
| Electrolytic Capacitors | 85°C rated, standard lifespan | 105°C Long-Life Low ESR Capacitors | Delivers calculated MTBF >250,000 hours in hot enclosures without forced cooling. |
| Power Factor Correction | Passive or None (PF ~0.55) | Active PFC (PF > 0.95 at 230VAC) | Reduces reactive power losses, maximizing generator and mini-grid efficiency. |
Market Dynamics & Projections
Cuba Market Trends: Infrastructure Modernization & Renewable Integration
Understanding shifting procurement imperatives across the Cuban industrial landscape from 2025 to 2030.
1. Shift Toward Solar-Hybrid Decentralization: Due to ongoing modernization programs directed by the Ministerio de Energía y Minas (MINEM), Cuba is rapidly expanding off-grid and microgrid photovoltaic projects to alleviate thermal power plant dependency. Single output power supplies are increasingly tasked with operating in hybrid DC bus setups, taking power alternately from fluctuating municipal grids, lithium-iron battery arrays, and diesel backup gensets. Keldan's wide input range SMPS units and companion pure sine wave inverters are uniquely adapted to this transition.
2. Industrial Efficiency in ZEDM: The ongoing expansion of manufacturing facilities inside the Mariel Special Development Zone has established European-style automation standards. Panel builders in ZEDM demand DIN-rail-mounted power units conforming strictly to EN 62368-1 and EN 55032 Class B electromagnetic compliance, matching equipment imported from Europe and South America.
3. Component Standardization to Counter Supply Logistics: Given logistical timelines for replenishment in the Caribbean basin, plant engineers across Cienfuegos, Matanzas, and Holguín actively consolidate power supply form factors. The adoption of uniform chassis sizes (such as the standard 1U low-profile LRS series for machine cavities and the NDR/EDR series for 35mm DIN rail control cabinets) minimizes inventory overhead and drastically shortens machine downtime.
TÜV Verified Manufacturing
Our Verified Factory Strengths: Engineered in Yueqing, Built for the World
Direct from Yueqing Keldan Technology Co., Ltd. (Malujiao Village, Beibaixiang Town, Yueqing, Zhejiang, China). An audited manufacturing facility delivering transparent B2B reliability.
QC GATE 01
SMT & Reflow Soldering
Automated surface mount technology lines ensure high-precision placement of surface-mount components, minimizing human error and thermal stress during soldering cycles.
QC GATE 02
Automated Optical Inspection (AOI)
100% post-soldering automated optical inspection flags misalignments, solder bridges, and component polarity errors before boards proceed to casing assembly.
QC GATE 03
100% Full-Load Burn-In
Every single power supply runs through dedicated burn-in aging racks under elevated temperatures and full-load stress to eliminate early infant mortality defects.
QC GATE 04
Direct OEM/ODM Capability
Experienced in-house engineering team (5+ certified SMPS engineers, each with 5+ years experience) supporting custom output rails, private branding, and specialized conformal protection.
Procurement Knowledge Base
Frequently Asked Questions: B2B Power Supply Purchasing for Cuba
Direct answers addressing voltage standard compatibility, shipping documentation, and technical compliance.
Does your power supply portfolio support both 110V and 220V AC systems used across Cuba?
Yes. Cuba's electrical infrastructure encompasses dual operational voltages: domestic and light commercial systems commonly use 110V/120V 60Hz, while industrial facilities, hotels, and agro-processing plants frequently utilize 220V/240V lines. Our products feature either universal wide input (85–264VAC) without manual intervention (such as the HDR, NDR, and EDR series) or selectable 115V/230V mechanical switches (such as the LRS and S-series enclosed lines), ensuring seamless compatibility without risking input stage blowouts.
How do Keldan power supplies withstand the high humidity and salty air of Cuba's coastal zones?
For maritime, resort, and offshore port applications (such as installations along the Malecón in Havana or Mariel Port), we offer military-spec conformal coating (polyurethane or silicone base) that shields surface traces from dendrite growth and electrolytic corrosion. Furthermore, our IP67 sealed models (LPV and LDV series) feature structural potting with high-grade thermally conductive epoxy resin, eliminating ingress of salt fog, damp air, and micro-contaminants entirely.
What documentation and export certifications do you provide for Cuban customs clearance?
All our standard switching power supplies carry CE marks and undergo testing corresponding to EMC directives EN 55032 and Low Voltage Directive EN 62368-1. For Cuban import requirements, our dedicated 12-person export trading department prepares complete documentation: Commercial Invoices, Packing Lists with detailed net/gross weights, Certificates of Origin (CO), bill of lading (B/L) tracking, and third-party TÜV Rheinland factory inspection verification reports.
What is your minimum order quantity (MOQ) and production lead time for sea freight to Cuba?
Standard models (such as LRS-150-24, HDR-30, and EDR-240-24) maintain sample availability starting from 1 unit for engineering evaluation, with standard box quantities starting from 10 to 15 pieces. For full container load (FCL) or less-than-container load (LCL) shipments destined for Havana or Mariel via direct or transshipment routes, our manufacturing cycle typically ranges from 15 to 25 working days depending on order magnitude.
Can Keldan develop customized voltage ratings for legacy machinery and equipment replacements?
Yes. Through our specialized OEM/ODM services, our engineering department regularly modifies output rails (e.g., custom 5V, 7.5V, 13.8V, 27.6V, 36V, 48V, or variable lab bench configurations) and fits specific terminal blocks to seamlessly retrofit discontinued legacy European or Soviet-era machinery controls still in operation across Cuban industrial plants.
