MANUFACTURER PROFILE

Jiangsu Tianwei Transformer

Distribution transformers with separate off-circuit, on-load and non-encapsulated dry-type routes from Hai’an, Jiangsu.

Jiangsu Tianwei’s range is organised around distribution-transformer construction and voltage adjustment. Its published catalogue includes sealed oil-immersed units, amorphous-core designs, epoxy-cast and non-encapsulated dry-type equipment, plus packaged substations. The company identifies a Hai’an address and describes a business established in 2008. This profile concerns that Jiangsu manufacturer; the shared Tianwei name is not used to attribute another company’s projects or capabilities to it.

Location: Hai’an, Jiangsu
Voltage adjustment: Off-circuit and on-load catalogue families
Dry-type construction: Epoxy-cast and non-encapsulated H-class
Assembly categories: YB prefabricated and ZGS13 combined equipment
Published address: No. 596 Zhennan Road

Decide how voltage adjustment should work

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Catalogue selection	Published voltage category	Quotation interface
Double-winding off-circuit family	35 kV	De-energised tap adjustment and agreed tap range
SZ on-load family	10 kV and 35 kV categories	Tap changer, drive, controller and regulation method
SC(B) resin-insulated family	20 kV and 35 kV headings	Dry construction and selected tap arrangement confirmed separately

Tianwei’s catalogue separates 35 kV double-winding off-circuit tap-changing distribution transformers from SZ-series on-load tap-changing equipment. It also lists 10 kV on-load equipment. This separation matters when the buyer expects voltage adjustment while the installation remains energised: selecting an off-circuit category is a different specification decision.

For the quotation, state the incoming-voltage range, required secondary voltage, tap range and whether adjustment must occur on-load. Ask which tap changer, drive and control equipment form part of the offer. A model-family prefix is a starting point for the discussion, not a complete control specification. For a replacement transformer, add the existing control interfaces and available installation space.

The voltage category and adjustment method should appear as separate entries in the technical offer. A 35 kV replacement requiring on-load control cannot be matched solely by finding another 35 kV catalogue entry. For an existing parallel installation, include the other unit's ratio, connection group, impedance and tap setting so that compatibility is assessed for the operating arrangement.

References: [2]

A broader choice of dry-type construction

The company introduction describes epoxy-cast equipment at 35 kV and below and non-encapsulated H-class dry-type equipment. In the product directory, SG11 is the named non-encapsulated family, while SC(B) headings include 20 kV and 35 kV resin-insulated designs. SCBH and SGBH are listed as amorphous-core families. Buyers therefore have a construction choice as well as a nominal voltage choice.

A useful comparison asks each proposal to identify its winding construction, insulation system, enclosure and cooling arrangement. For the amorphous-core route, ask for the offered rating’s no-load loss and load loss rather than applying a percentage saving from a family description. Keep impedance and temperature reference conditions in the same schedule so that an apparent loss advantage is assessed against the complete proposed design.

References: [1] [2]

Oil-immersed units, packaged substations and grounding equipment

The sealed oil-immersed catalogue includes S13-M, S20-M and S22-M 10 kV families and an S11 20 kV family. It separately names S(B)H15-M, S(B)H21-M and S(B)H25-M sealed amorphous-core transformers. The series names do not establish the winding material, accessories or guaranteed loss figures for an individual order; specify those requirements in the inquiry.

For an assembled installation, Tianwei lists YB high/low-voltage prefabricated substations and ZGS13 combined transformers. Its catalogue also includes a turn-adjusted arc-suppression-coil grounding-compensation device. That is a separate network-grounding discussion, rather than an ordinary distribution-transformer substitute. Identify the network arrangement and intended compensation duty before requesting that category.

References: [2]

Agree the service terms for the actual order

The company publishes a service undertaking covering quality issues, site operation and maintenance support. Its text says the undertaking takes effect after being faxed with the company seal. The purchasing step is therefore to agree the applicable written terms for the order: warranty scope, exclusions, response arrangements and responsibility for site work.

The published contact address is No. 596 Zhennan Road, Hai’an. For a factory inspection, confirm the current workshop location and the production route for the selected family. An epoxy-cast unit, an oil-immersed unit and an assembled substation need different inspection discussions; use the chosen scope of supply to set the visit agenda.

References: [1] [3]

EXISTING CATALOGUE RECORDS

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Use each product record to review the published configuration, then request the proposed specification for your project.

Tianwei SG11 non-encapsulated dry-type series

SG11 / SG(B)11

Product documents

Manufacturer catalogue source review

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Checked 2026-09-23

BEFORE YOU REQUEST A QUOTATION

A project brief the factory can respond to

Use this list to prepare your requirements. Checking an item only marks your preparation on this page.

0 of 6 items prepared

State voltage ratio, capacity, frequency and required voltage-adjustment method.For on-load equipment, define tap range, drive and control interfaces.Choose the dry-type construction or sealed oil-immersed family that fits the installation.Ask for winding material, losses, impedance, accessories and reference conditions for the offered unit.Separate a transformer-only order from YB/ZGS assembly scope or grounding-compensation equipment.Agree the written service terms and inspection arrangements for this order.

Prepare an RFQ for TIANWEI

Questions buyers ask

Are all listed Tianwei transformers on-load adjustable?

No. The catalogue separately names off-circuit and on-load categories. Specify the required method of voltage adjustment and the associated controls.

Does the Tianwei name mean this is a Baobian group factory?

This page describes Jiangsu Tianwei Transformer in Hai’an. A shared name is not evidence of a group relationship, and this profile does not transfer another Tianwei company’s references to it.

Is SG11 an epoxy-cast family?

The company labels SG11 as non-encapsulated H-class dry-type equipment. Its resin-insulated families have separate catalogue headings.

Sources

3 sources · checked 8 October 2026

Prepared by PowerTransformerB2B. Checked 8 October 2026. The sources below identify the published company information and any dated public records used for this profile.

Company catalogues describe product families and options. Before you order, ask the manufacturer for the type-test report and acceptance documents for your exact model and rating.

[1] Company introduction and service undertakingJiangsu Tianwei Transformer · Manufacturer information
[2] Homepage and product directoryJiangsu Tianwei Transformer · Manufacturer catalogue
[3] Contact pageJiangsu Tianwei Transformer · Published contact address