Import 30-2500kva Dry Type Power Transformer — Buy in wholesale FOB from Supplier in China

Qingdao Hengfengyou Electric Engineering Co., Ltd. manufactures dry type power transformers rated from 30 kVA to 2500 kVA, designed for installations where fire resistance and explosion-proof operation are critical. The cast resin or vacuum-impregnated insulation eliminates liquid dielectric, reducing environmental and containment risks compared with oil-filled alternatives. Cooling operates in two modes: natural air cooling (AN) for continuous rated capacity, and forced air cooling (AF) to boost output by 50 percent for intermittent overload duty. The supplier's address is N0.506 Huicheng Road, Chengyang District, Qingdao City, Shandong Province, China.

The core and windings employ vacuum-epoxy or similar solid insulation systems typical for Class F or Class H temperature rise limits, with copper or aluminium conductors selected per design. Short-circuit withstand is engineered into the magnetic circuit and clamping structure, a defining advantage of dry type construction. Noise levels are controlled through core lamination grade and tightening methods, with typical sound power values ranging 55-75 dB(A) depending on rating and cooling mode. Dimensions scale with kVA: a 1000 kVA unit typically occupies roughly 2000 mm x 1200 mm x 2200 mm (L x W x H), though buyers should request certified drawings for their exact rating. IP enclosure ratings vary by installation environment, with common options from IP20 for indoor switchrooms to IP54 for harsher conditions.

Primary applications include local lighting systems, high-rise building substations, airport terminals, port facilities, and CNC machinery feeds where oil leakage is unacceptable. Buyers are typically electrical contractors, facility engineering departments, and industrial EPCs sourcing for commercial and infrastructure projects. The supplier does not publish MOQ, price, or standard lead time in the listing data, so importers should confirm these directly with Qingdao Hengfengyou. Incoterms, packaging for sea freight, and factory acceptance test (FAT) protocols also require direct negotiation.

Qingdao Hengfengyou Electric Engineering Co., Ltd. is based at N0.506 Huicheng Road, Chengyang District, Qingdao City, Shandong Province, China, postal code 266000. The company's trust tier on the platform is listed as 'harbor'. The listing shows a response rate of 0.00 percent and an average response time of zero hours, which indicates that responsiveness metrics are either not yet populated or not disclosed. No information about year of establishment, registered capital, factory size, or employee count is available in the provided data.

The supplier's product focus is dry type power transformers for fire-sensitive and indoor installations, with cooling options that allow both continuous and intermittent overload operation. The source description emphasises short-circuit resistance, low maintenance, operational efficiency, compact size, and low noise as key product characteristics. Buyers should note that no certifications (such as ISO, IECEx, or CCC) are mentioned in the listing, and no client references or export experience is stated. All claims about verification status, production capacity, or quality management systems should be requested directly from Qingdao Hengfengyou during due diligence.