Three-phase American box variable

Product Introduction

Three-Phase Pad-Mounted Transformer

Product Introduction

Three-phase American-style pad-mounted transformers are compact power distribution units designed for utility, commercial and industrial applications.

They are suitable for operation in different environmental conditions and can be installed either outside or inside a building.

The transformer provides a safe and energy-efficient power distribution solution.

Fluid-filled models are available in different configurations and can be equipped with various accessories to meet both standard and complex project requirements.

Technical Data

Rated Capacity (kVA)	High Voltage (V)	Low Voltage (V)	No-Load Loss (W)	On-Load Loss (W)
75	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	180	1250
112.5	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	200	1500
150	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	280	2200
225	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	400	3050
300	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	480	3650
500	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	680	5100
750	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	980	7500
1000	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	1150	10300
1500	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	1640	14500
2000	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	2160	20645
2500	34500 / 19920 / 13800 / 7957 / 13200 / 7620 / 12470 or others	240 / 480 / 480Y / 277 / 600Y / 347	2680	27786

About Yawei

Yawei Group has more than 3,000 employees, including over 300 engineering and technical personnel. The company covers an area of more than 1,200 mu, and the Group’s sales revenue in 2025 was approximately RMB 6 billion. Among them, Jiangsu Yawei Transformer Co., Ltd. achieved annual sales of more than RMB 2.4 billion.

Request a Quote

Order Process

1️⃣Submit Your Requirements

Send us the required transformer type, capacity, voltage, frequency, standards, installation environment, and project details.

2️⃣ Technical Review & Solution Confirmation

Our engineers review your specifications, recommend the appropriate transformer solution, and confirm the technical parameters, drawings, price, and delivery time.

3️⃣ Production & Factory Testing

After order confirmation, we arrange production according to the approved technical documents. Each transformer undergoes strict inspection and routine testing before shipment.

4️⃣Delivery & After-Sales Support

We arrange secure packaging and international shipping, provide complete technical documents, and offer installation guidance and after-sales support.

Professional. Reliable. Project-Focused.

Frequently Asked Questions

1. What types of transformers do you manufacture?

We manufacture power transformers, oil-immersed transformers, dry-type transformers, amorphous alloy transformers, pad-mounted transformers, renewable energy transformers, prefabricated substations, and various special-purpose transformers.

2. Can you customize transformers according to our project requirements?

Yes. We can customize the transformer capacity, input and output voltage, frequency, vector group, cooling method, enclosure, accessories, protection level, and applicable standards according to your project specifications.

3. What information is required to receive a quotation?

Please provide the transformer type, rated capacity, primary and secondary voltage, frequency, number of phases, vector group, impedance, cooling method, installation environment, required standards, quantity, and destination port.

4. What international standards can your transformers meet?

Our transformers can be designed and manufactured according to applicable international and regional standards, including IEC and other project-specific requirements. Different product series may also comply with UL, CE, TÜV, KEMA, and GOST requirements.

5. What tests are carried out before shipment?

Each transformer undergoes strict inspection and routine testing before shipment. Depending on the project, type tests and special tests can also be arranged according to the agreed technical standards.

6. How long does transformer production take?

The production time depends on the transformer type, capacity, technical complexity, quantity, and testing requirements. A detailed delivery schedule will be confirmed after the technical specifications and order are approved.

7. Can you provide technical drawings and documents?

Yes. We can provide approved drawings, technical data sheets, test reports, packing lists, operation manuals, and other documents required for installation, customs clearance, and project acceptance.

8. How are the transformers packed for international shipping?

Transformers are securely packed according to their size, structure, and transportation method. Moisture protection, shock protection, reinforced packaging, and suitable export markings can be provided to reduce the risk of damage during transportation.

9. Do you provide installation and after-sales support?

Yes. We provide remote technical guidance, installation instructions, commissioning support, troubleshooting assistance, and after-sales service. On-site support can also be discussed according to the project requirements.

10. How can I start a transformer project with you?

Send us your technical specifications, drawings, or project requirements. Our engineering team will review the information, recommend a suitable solution, and provide a quotation, technical proposal, and estimated delivery time.