BAITONG ELECTRICAL TECHNOLOGY CO.,LTD, operating under the BTCN Electric brand, is a transformer manufacturer based in Yueqing, Wenzhou, Zhejiang, China. Since 2007, our work has focused on transformer design, production, inspection, and project support.
We mainly work with contractors, distributors, industrial users, and power project buyers. Our website focuses on oil-immersed transformers, 35 kV oil-filled transformers, and resin-insulated dry-type transformers.
The image on this page presents several transformer configurations together. It is a product-range presentation rather than a factory production photograph. Final dimensions, colors, accessories, and terminal arrangements depend on the approved order.
Buyers can review our power transformer products or contact our transformer team with a data sheet or project specification.
Our Main Transformer Products
At BAITONG ELECTRICAL TECHNOLOGY CO.,LTD, we do not treat every transformer as the same standard product. The electrical parameters, installation conditions, cooling requirements, and connection arrangement must match the project.
Our oil-immersed range includes distribution transformers and larger oil-filled configurations. Before production, we confirm:
- Rated capacity
- Primary and secondary voltage
- Frequency and number of phases
- Vector group
- Impedance
- Tapping range
- No-load and load-loss requirements
- Tank construction
- Cooling arrangement
- Terminal positions
- Required accessories
Buyers can review our oil-immersed transformer range for available series and technical data. The final product is defined through the quotation, data sheet, and approved drawing.
Our dry-type range includes resin-insulated transformers. These products use solid insulation instead of transformer oil.
For a dry-type order, we confirm the winding construction, insulation class, temperature-rise limit, cooling arrangement, enclosure, sensors, fans, and cable or busbar interface.
More information is available on our resin-insulated dry-type transformer page. We use the buyer’s specification to select the product family. We do not recommend a model from the application name alone.
How Our Factory Handles a Transformer Project
A clear order starts before the workshop begins production. Our sales and technical teams first review the inquiry. If important information is missing, we list the points that require confirmation.
The basic project information normally includes:
- Rated capacity and voltage ratio
- Frequency and number of phases
- Vector group and impedance
- Tapping range
- Loss requirements
- Insulation and temperature-rise requirements
- Indoor or outdoor installation
- Ambient temperature and altitude
- Cable or busbar connection
- Enclosure or tank requirements
- Quantity and destination
- Required tests and documents
Once the technical scope is clear, we prepare the data sheet and drawing for approval. These documents define the dimensions, terminal direction, connection layout, accessories, and project-specific requirements.
Production then follows the approved information. The process can include core preparation, winding, insulation work, active-part assembly, connection work, tank assembly, resin-coil assembly, and final fitting.
The manufacturing route depends on the transformer type. Oil-immersed units require tank and insulating-oil processes. Dry-type units follow their specified winding, casting, assembly, and enclosure requirements.
This working method is important to BAITONG ELECTRICAL TECHNOLOGY CO.,LTD. It gives our factory, technical team, and customer the same reference throughout the order.
Inspection, Testing, and Order Documents
A transformer should not be accepted only because its external appearance looks complete. We compare the finished unit with the approved drawing and technical specification.
Our team checks:
- Nameplate information
- Overall dimensions
- Terminal positions
- Accessories
- Connection markings
- Visible workmanship
- Packing scope
- Required documents
The electrical test plan is agreed during the order process. Depending on the product and contract, routine checks can include winding resistance, voltage ratio, vector group, no-load loss, load loss, impedance, insulation resistance, and dielectric tests.
Special tests or customer-witnessed inspections must be agreed before production scheduling. This allows the required procedure and documents to be included in the order plan.
For IEC-based projects, buyers can refer to IEC 60076-1 for general power transformer requirements. The inquiry should still state the required standard edition and local project rules.
For projects entering the United States, buyers should review the applicable U.S. Department of Energy distribution transformer requirements before confirming efficiency and loss targets.
We prepare the document package according to the contract. It can include approved drawings, technical data, routine test reports, nameplate details, packing lists, and accessory lists.
Working Directly with Baitong Electric
Direct factory communication is useful when a project involves non-standard voltage, limited installation space, special terminal directions, market-specific losses, or additional accessories.
We review these requirements before giving a final technical offer. If a request changes the dimensions, cooling arrangement, tank, enclosure, or connection layout, we record the change in the data sheet or drawing.
Before shipment, the transformer and loose accessories are checked against the packing list. Terminals, bushings, coils, instruments, and other exposed components receive suitable transport protection.
The unit is secured through its base or transport structure. We select the packing arrangement according to the route and expected storage conditions.
BAITONG ELECTRICAL TECHNOLOGY CO.,LTD aims to make each stage clear, from the first inquiry to delivery preparation. We focus on confirmed specifications, approved drawings, agreed tests, and practical communication.
To request a quotation, send us your electrical parameters, installation conditions, quantity, destination, and document requirements. Our team will review the information and identify any missing details before production is discussed.
FAQ About BAITONG ELECTRICAL TECHNOLOGY CO.,LTD
What transformer products does Baitong Electric manufacture?
Our main product range includes oil-immersed transformers, 35 kV oil-filled transformers, and resin-insulated dry-type transformers. Each order is reviewed against the buyer’s technical requirements.
What information is needed for a transformer quotation?
Please provide the capacity, voltage ratio, frequency, vector group, impedance, taps, loss limits, installation conditions, connection method, quantity, and destination. A data sheet or single-line diagram is helpful.
Can Baitong manufacture a project-specific transformer?
We review project-specific voltage, dimensions, connections, tanks, enclosures, cooling arrangements, and accessories. Feasible requirements are recorded in the technical offer and approved drawing before production.
