Import 6kv-110kv Transformer — Buy in Bulk from Supplier in China

Ningbo Huay更新时间2025年6月25日Huayuan Electric And Machine Industry Co.,Ltd. manufactures oil-immersed and dry-type transformers covering the 6kV to 110kV voltage range for power distribution and industrial applications. The dry transformer series includes SC9 and SG10 insulation platforms for 6kV to 35kV applications, while the oil-filled range spans S9, S10, and S11 series from 6kV up to 110kV. These designations indicate established Chinese domestic series codes where advancing numbers generally represent improved loss characteristics and efficiency tiers. The supplier operates from Ningchun Road in Ningbo's Zhejiang Province, a region with established electrical equipment manufacturing infrastructure. The listing presents custom engineering capabilities for project-specific requirements, though buyers should verify the scope of customisation available for their particular application.

The SC9 series dry-type transformers use cast resin insulation, typically epoxy-based vacuum pressure impregnated or vacuum cast, providing Class F or Class H thermal ratings with natural air cooling (AN) or forced air cooling (AF) options. The SG10 series represents a variant insulation approach, often associated with Nomex-based or hybrid insulation systems with enhanced fire resistance and overload capacity. For oil-immersed units, the S9, S10, and S11 series correspond to successive national efficiency standards in China, with S11 typically offering reduced no-load and load losses compared to earlier tiers. Core construction generally uses grain-oriented silicon steel, with S11 designs often employing stepped-lap or fully stepped core configurations to reduce no-load losses. Winding materials are typically copper or aluminium, with conductor type affecting short-circuit withstand and load loss performance. Cooling for oil units is normally ONAN (oil natural, air natural) for standard ratings, with ONAF options for higher capacities.

These transformers serve substation applications, industrial plant distribution, renewable energy connection points, and infrastructure projects requiring reliable voltage transformation. Buyers include electrical utilities, EPC contractors, industrial facility operators, and renewable energy developers. The 6kV to 35kV range addresses distribution network step-down applications, while 66kV to 110kV units suit transmission interface and large industrial receiving substations. Import considerations include the substantial weight and dimensional requirements of oil-filled units, which may require special transport and installation equipment. Dry-type units offer reduced fire risk and eliminate oil containment requirements, making them suitable for indoor or restricted-access installations. Buyers should confirm with Ningbo Huayuan the specific loss values, impedance voltages, tap changer configurations, and vector group options for their required rating, as these performance parameters vary by design and application.

Ningbo Huayuan Electric And Machine Industry Co.,Ltd. is located at 323 Ningchun Road, Ningbo 315806, Zhejiang Province, China. The supplier operates in the electrical equipment manufacturing sector with a product focus on power transformers across multiple insulation types and voltage classes. The company holds a 'harbor' trust tier and an 'imported' supplier tier designation, indicating platform recognition status. Like the first listing, the response rate shows 0.00 percent with zero average response hours, suggesting either data latency, account inactivity, or a recently uploaded listing without established communication history. Buyers should initiate contact proactively to gauge responsiveness and technical competence before advancing to quotation stages.

The available profile does not disclose factory floor area, annual production capacity, number of employees, revenue figures, years of establishment, or specific client references. No ISO 9001, ISO 14001, or industry-specific quality system certificates are confirmed in the extracted data. The listing's reference to international standards compliance and certifications such as ISO and CE requires verification, as these claims appear in the source description without attached documentation. For transformer procurement, supplier technical capability assessment is critical. Buyers should request factory audit reports, type test certificates from accredited laboratories (such as KEMA, CESI, or domestic equivalents like Xian High Voltage Apparatus Research Institute), and evidence of routine testing capability. The absence of response history makes sample inspection or site visit particularly advisable for initial engagement.