Top China Waterproof LED Power Supply Factory & Supplier

IP67 certifies that the enclosure prevents any dust ingress (6) and withstands temporary immersion in water up to 1 meter depth for 30 minutes without harmful water entry (7). This is ideal for architectural lighting, facade illumination, billboard signage, and general landscape projects subject to torrential rains or temporary pooling.

IP68 specifies protection against continuous, indefinite submersion in water under specific manufacturer-designated depths and pressures (typically 1.5 to 3 meters). IP68 units require hermetic silicone vacuum potting, specialized vulcanized cable gland pass-throughs, and non-corrosive casing alloys to endure constant hydrostatic pressure in fountains, dockside piers, and underground flood-prone utility vaults.

Non-PFC power supplies draw high, discontinuous current spikes at the peak of the AC voltage waveform, resulting in low power factors (typically 0.5–0.6) and high harmonic distortion (THD > 60%). In commercial or municipal lighting circuits containing hundreds of luminaires, this causes excessive neutral conductor overheating, nuisance tripping of branch breakers, and punitive utility penalties.

Active PFC circuits dynamically reshape input current into phase with the AC grid, achieving a Power Factor >0.95 and reducing THD below 10%, complying with EN 61000-3-2 Class C limits for lighting applications.

When uncharged bulk capacitors connect to AC mains, initial peak charging currents can spike to 40A–70A per driver for a fraction of a millisecond. On multi-driver lighting circuits, simultaneous turn-on will trip miniature circuit breakers (MCBs Type B or Type C).

Harlon incorporates dual-tier inrush mitigation: cold-state NTC thermistors paired with internal bypass relays in medium-to-high wattage units, reducing peak inrush currents by over 65% and preventing contact welding on external relays, timer switches, and breakers.

In sealed, unventilated outdoor fixtures, internal ambient temperatures can rise 20°C to 30°C above outside ambient temperatures due to luminaire LED board heat. If outside air is 40°C, the power supply operates in a 65°C to 70°C micro-environment.

Harlon power supplies feature engineered thermal derating curves starting at 50°C. For maximum operational life and zero premature failures, we advise sizing nominal continuous loads between 70% and 80% of rated capacity. Our engineers will provide customized thermal modeling curves based on your enclosure geometry and thermal dissipation coefficients.

Yes. As a direct OEM/ODM manufacturer with nearly 20 years of experience, we provide custom output voltage calibrations (e.g., non-standard 18V, 32V, 54V DC rails), specialized multi-pin waterproof screw-lock connectors (IP68 Weipu, Amphenol, or custom molded ends), extended lead lengths with UV-resistant rubber cabling (H07RN-F or SJTW), and laser-etched custom buyer labels, custom barcoding, and private-label retail or distributor cartons.

Our manufacturing operations are ISO 9001 certified and independently assessed on-site by SGS. Products conform to CE (LVD & EMC directives) and RoHS standards. Standard models come with a 3-year factory warranty, with optional 5-year extended warranty packages available for municipal and high-end architectural tiers utilizing our 105°C ultra-long-life capacitor selections.