Can you manufacture transformers with non-standard capacities?

Yes, we support custom-made transformers with special capacities. The lead time is 7-15 days, meeting individual needs.

Is it normal for the transformer to generate heat during operation?

Slight heat is normal. However, if the temperature is excessively high and the casing is hot to the touch, it is likely due to overload or poor heat dissipation, requiring shutdown and inspection.

Is maintenance expensive? What should I be aware of?

Maintenance costs are low. Regular ventilation and periodic dust removal are sufficient; frequent maintenance is not required.

What capacity should I choose? I'm worried about choosing too small and not enough, or choosing too large and wasting money.

Choose a capacity that is 1.2 to 1.3 times the total power of the equipment. This avoids overload and doesn't waste resources.

Are transformer capacity and power the same thing?

No. Capacity refers to rated apparent power (unit: kVA), while power refers to active power (unit: kW). When selecting a transformer, check the equipment power and convert accordingly.

Customize Low-Maintenance Maintenance-Free Mineral Oil Transformer for Seaport

Name: Customize Low-Maintenance Maintenance-Free Mineral Oil Transformer for Seaport
Brand: Changzhou Guanghui Transformer Manufacturing Co., Ltd.
SKU: 2282172265

Jiangsu, ChinaChangzhou Guanghui Transformer Manufacturing Co., Ltd.

US$1,500.00-3,000.00

1 Piece

Product profile

Customization

Available

Application

Power, Electronic, Instrument, Lighting, Rectifier, Audio

Phase

Three

Model NO.

Oil-type-400

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Auto-transformer

Certification

ISO9001-2000, ISO9001, CCC

Usage

Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Ring

Transport Package

Wooden Case

Specification

Customized

Origin

China

Production Capacity

1000pieces/Year

Key features

Maintenance-Free Design: Corrugated oil tanks eliminate air exchange, solving oil aging and reducing maintenance needs.

High-Purity Copper Coils: Uses high-purity oxygen-free copper to effectively reduce copper loss and increase reliability.

Low Noise & Loss: Advanced shearing and oblique joint processes reduce no-load loss, current, and operational noise.

Custom Capacity Options: Supports custom-made transformers with special capacities, with a lead time of 7-15 days.

Robust Transportation Structure: Robust positioning structure prevents displacement and withstands impacts during transportation.

2-Year Warranty Coverage: Covers non-human-caused damage with free repair or replacement for the entire unit.

High Short-Circuit Withstand: Optional copper foil winding improves ability to withstand sudden short circuits and reduces losses.

ISO Certified Manufacturer: Established in 1979, certified with ISO9001:2015, ISO45001:2018, and ISO14001.

Company profile

Management CertificationProduct CertificationImporters and Exporters

Changzhou Guanghui Transformer Manufacturing Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 0 Year CertifiedNearest Port: Shanghai PortAverage Response Time: ≤0.01h

AI-Powered supplier vetting

SummaryThe supplier demonstrates substantial manufacturing and customization capabilities, supported by over 100 technical personnel, international production equipment, transformer mass-production machinery, recent new-product development, and documented customization options. It provides ODM and OEM services and reports cooperation with Fortune 500 companies. Management-system certifications include ISO9001:2015, ISO45001:2018, ISO50001, and ISO14001, while quality assurance, complaint handling, and corrective/preventive-action procedures are documented. However, the supplier does not provide 3D software design services, lacks a valid manufacturing-capacity contract with affiliated subcontractors, and has no overseas warehouse, showroom, agents, branches, or stated overseas-service countries. Financial credibility cannot be assessed from the available non-financial evidence.

Supplier typeThe supplier is positioned as a transformer manufacturer with mass-production equipment and technical personnel, while also offering OEM and ODM services. It has inventory capability but no overseas warehouse, showroom, agents, branches, or stated overseas-service countries.

CertificationsThe supplier holds ISO9001:2015, ISO45001:2018, ISO50001, and ISO14001 management-system certifications. It also reports quality assurance and an environmental impact assessment report, although the product compliance certification is only identified as “Others,” without specific standards stated.

After-Sales capabilityDocumented complaint-handling and corrective/preventive-action procedures, with followed records, support after-sales process capability. However, no overseas service network is available, and the supplier has no overseas agents or branches.

R&D capabilityThe supplier reports new products within the past year and describes an innovation-oriented development philosophy. It provides ODM services but does not provide 3D software design services and has no available SDK.

Production capacityMore than 100 technical personnel, advanced international equipment, automatic production lines, foil-type winding machines, and stated transformer mass-production capability support strong production capacity. Inventory capability is also reported, although there is no valid contract with affiliated subcontractors for manufacturing capacity.

Customization capabilityThe supplier offers customization from samples, designs, full customization, minor customization, flexible customization, and ODM services. These explicit service options indicate broad product customization capability.

Client casesThe supplier reports cooperation with Fortune 500 companies and indicates that repeat buyers account for 50%–80%. These statements provide explicit evidence of notable customer experience, although no customer names or project details are supplied.

Product Q&A

Q:How do I maintain the transformer daily?

Keep the surrounding area well-ventilated and dry, clean dust regularly, check that wiring connections are secure, and disconnect power when not in use.

Q:How long will this transformer last?

With normal use and regular maintenance, the all-copper model can last 10-15 years, ensuring durability.

Q:How do I choose between all-copper and aluminum wire?

Choose all-copper for stability and long lifespan; choose aluminum wire for limited budgets and short-term use.

Q:Is installation difficult? Do I need a professional installer?

We provide installation diagrams; you can install it yourself for simple situations; for complex scenarios, we can schedule on-site service.

Q:How long is the warranty period? What happens if it breaks down?

The whole unit has a 2-year warranty. During the warranty period, non-human-caused damage will be repaired or replaced free of charge.