How do your converters cope with Havana's severe voltage instability and frequent brownouts?
Our AC/DC power supplies and DC-DC converters feature broad, forgiving input tolerances. AC/DC SMPS units include a wide-voltage universal input stage (85V–264VAC / 120V–370VDC) equipped with metal oxide varistors (MOV) and active inrush current limiting (NTC thermistors). For DC-DC systems, our wide 2:1 and 4:1 input windows maintain full nominal output stability even when input battery voltages dip during deep discharge cycles, preventing erratic system resets or component burnouts.
What specific protection is provided against high tropical humidity and saline sea breezes in coastal Havana?
For products deployed in coastal regions such as Old Havana, Vedado, Miramar, or the Port of Havana, we provide optional industrial conformal coating (polyurethane or silicone-based resin) applied automatically across the PCB assembly. This seals surface-mount components, transformer windings, and copper traces against airborne moisture, salt fog, fungal growth, and conductive dust accumulation, extending product lifetime well beyond standard off-the-shelf power modules.
Can you configure DC-DC converters for electric vehicle and tricycle (motorina) repowering?
Yes. We frequently build custom DC-DC converters engineered explicitly for urban electric mobility applications. Typical configurations accept 48V, 60V, 72V, or 96V DC traction battery pack voltages and step down to a regulated 12.0V or 13.8V DC at 10A, 15A, 20A, or 30A outputs. These feature cast-aluminum finned enclosures for vibration resistance, integrated fuse protections, and remote ignition-key switch control circuits (enable/disable pins).
What are the recommended derating guidelines when operating in non-air-conditioned Cuban facilities?
In non-ventilated indoor spaces in Havana where summer indoor temperatures can exceed 40°C, natural convection-cooled power supplies should be derated by approximately 2% to 2.5% per degree Celsius above 40°C, operating at approximately 75% to 80% of rated continuous power at 50°C. For continuous 100% capacity in high ambient heat, we recommend selecting models with integrated temperature-controlled DC cooling fans or selecting the next power tier up (e.g., specifying a 200W unit for a 150W continuous load).
What shipping terms, ports of entry, and payment arrangements are supported for Cuba?
We provide sea freight shipments directly to the Port of Mariel (ZEDM) or the Port of Havana, offering standard Incoterms including FOB Ningbo/Shanghai, CFR, or CIF Mariel. For expedited project requirements and replacement batches, air express delivery (via major international couriers) is supported. We accommodate international commercial trade settlements through wire transfer (T/T), confirmed irrevocable Letters of Credit (L/C), and multi-currency arrangements (USD, EUR, CNY) in compliance with international export regulations.
What certifications and verification reports can be provided for import customs clearance?
All our standard switching power supplies and converters are produced under our certified ISO 9001:2015 Quality Management System. We provide CE Declaration of Conformity (EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU), RoHS compliance certificates, detailed factory burn-in test records, and comprehensive on-site factory verification reports issued by SGS Group to facilitate swift customs approval and technical qualification.
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