Dalian Xinguang Transformer Manufacturing

Xinguang's SCB page describes segmented cylindrical high-voltage coils, with axial cooling passages on larger coils. It says the coils undergo vacuum drying before resin casting, with casting and curing carried out according to a programmed process curve. The low-voltage winding is described as foil construction with resin-sealed ends. These details give a buyer concrete topics for a technical review: winding construction, casting process, cooling passages and end protection.

The same page describes a 45-degree step-lap silicon-steel core and a resin surface-sealing process. The manufacturer associates those arrangements with vibration and loss control. They are descriptions of its published design approach, rather than measurements of every transformer leaving the factory. A procurement drawing and the inspection records for the offered design remain the documents that connect construction to delivered performance.

The process text and technical block use different insulation-class descriptions. A buyer should therefore ask for the insulation system and temperature-rise guarantee of the selected design in writing. Carrying one class label from a general catalogue into every model would conceal a material specification question.

The SCB technical description lists natural-air and forced-air cooling, AN and AF. It also describes three-phase winding-temperature monitoring with fan control, alarm and trip functions. An indoor buyer should specify the control interfaces, sensor arrangement and whether fans are required, rather than assume that every catalogue illustration includes the same accessories.

Published enclosure options include IP00, IP20 and IP23. The catalogue's standard-use description includes an indoor installation, ambient temperature no higher than 40°C and altitude no higher than 1,000 metres. A room with restricted ventilation, higher altitude or a different ambient profile needs a specific proposal. An enclosure choice must be considered together with airflow, access for maintenance and the required continuous rating.

For a replacement unit, send a room plan showing incoming and outgoing cable positions, door openings, clearances and the intended foundation. For a new room, obtain the manufacturer's heat-release figures and general-arrangement drawing before finalising ventilation and switchgear spacing. These are procurement recommendations drawn from the installation conditions, not claims about a completed Xinguang project.

The catalogue contact block names 大连新光变压器制造有限公司 and gives No. 8 Yongxing Street, Zhuanghe, Dalian. A Zhuanghe municipal-government notice, document 庄政办发〔2008〕43号, also lists the same Chinese company name in an administrative-jurisdiction attachment under Xinhua subdistrict. The notice was issued on 15 June 2008 and published on 20 June 2008.

That record establishes a dated local reference for the enterprise name. It does not establish a present manufacturing licence, current ownership structure or export approval. When preparing a contract, use the legal name and current address supplied in the commercial documents, and make sure the drawing, quotation and test-report entity agree with the intended contracting manufacturer.

Xinguang's archived technical page cites older editions of transformer standards. The purchase specification should name the editions and requirements actually applicable to the destination project. A series designation such as SCB10 or SCB11 should not replace a current efficiency requirement, an agreed partial-discharge criterion or the complete routine-test schedule.

A useful first inquiry combines the construction route, continuous kVA, primary and secondary voltages, vector group, frequency, tap range and impedance with the installation envelope. Add copper or aluminium explicitly, then ask for loss guarantees under the same rating and reference-temperature conditions used for competing offers. If forced cooling is proposed, distinguish the natural-air continuous rating from the fan-assisted rating.

For the technical return, request a general-arrangement drawing, terminal layout, mass, enclosure and cooling configuration, loss schedule and test plan. Keep delivery milestones and acceptance documents tied to that selected design. This turns the two distinct dry-type routes and the published catalogue tables into a practical supplier discussion, without treating an archived series page as a finished project specification.