What are the terms of payment?

We accept L/C, T/T, D/P, D/A, Western Union, and MoneyGram (for small-amount payments).

What material is used for the transformer coil?

The transformer coil uses 99.99% pure copper as the conductor material, insulated with enamelled copper wire (Class B/F/H).

Custom 300va-200kVA Audio Toroidal Transformer Core

Name: Custom 300va-200kVA Audio Toroidal Transformer Core
Brand: Zhejiang Zhengxi Electric Group Co., Ltd.
SKU: 1970776801

Zhejiang, ChinaZhejiang Zhengxi Electric Group Co., Ltd.

US$25.00

1-99 Pieces

US$20.00

100-499 Pieces

US$18.00

500+ Pieces

Product profile

Customization

Available

Application

Power, Electronic, Lighting, Rectifier, Audio, Power, Electronic

Phase

Single

Core

Core-type Transformer

Cooling Method

Dry-type Transformer

Winding Type

Separated Winding Transformer

Certification

ISO9001, CCC

Usage

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

Frequency Characteristics

Power Frequency

Shape of Core

Ring

Brand

Zhengxi

Material

Pure Copper

Input Voltage

220-480V

Output Voltage

220-480V

Warranty

1 Year

MOQ

10 PCS

Transport Package

Export Packaging

Specification

38*16.5*9cm

Trademark

ZHENGXI or OEM

Origin

Zhejiang, China

Key features

Custom Voltage Range: Input and output voltage customizable from 220-480V to meet specific power needs.

Pure Copper Winding: Constructed with 99.99% pure copper enamelled wire for superior conductivity and efficiency.

Low EMI & Noise: Doughnut-shaped core design significantly reduces electromagnetic interference for clear audio.

Compact & Lightweight: Space-saving design allows for easier integration into various audio and electronic devices.

1-Year Warranty: Comprehensive 1-year warranty covering accessory problems with free replacement parts.

OEM/ODM Service: Full customization available including logo, design, and specifications based on customer requirements.

Wide Power Range: Available in capacities from 300VA to 200kVA, suitable for diverse audio applications.

Company profile

Importers and ExportersManagement Certification

Zhejiang Zhengxi Electric Group Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2014-03-13 CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤1.95h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier with electronic, mechanical and electrical, switching-control, photovoltaic, instrumentation, and related technical-service activities. It demonstrates broad customization and 3D software design capabilities, plus SDK availability. Production-related evidence includes winding and assembly facilities, 12 quality inspectors, inventory capacity, valid manufacturing contracts with associated subcontractors, documented inspection procedures, and a stated peak-season lead time of one month. Quality and compliance evidence includes ISO9001:2015, ISO14001, RoHS, CE, and an FCC raw-material test report. The supplier has documented corrective-action, complaint-handling, quality-assurance, and traceability procedures. However, it reports no overseas warehouse, showroom, agents or branches, or overseas service countries, and no customer cases are provided. Financial records are referenced for 2022–2024, but no substantive financial figures or performance...

Supplier typeThe supplier explicitly identifies itself as a professional technical supplier. Its stated scope covers switch-control equipment, electronic components, mechanical and electrical equipment, photovoltaic equipment and components, instrumentation, and related technical services, indicating a manufacturing and technical-services profile.

CertificationsThe supplier reports ISO9001:2015 and ISO14001 management-system certifications, as well as RoHS and CE product certifications. An FCC raw-material test report is also listed, providing explicit evidence of multiple quality, environmental, and product-compliance credentials.

After-Sales capabilityThe supplier has documented procedures and records for corrective and preventive actions and customer-complaint handling, together with stated quality assurance and traceability. However, it has no overseas warehouse, showroom, agents or branches, and reports service coverage in zero countries, so international after-sales infrastructure is limited.

R&D capabilityThe supplier reports professional R&D capability, 3D software design services, and an available SDK. These are direct indicators of technical development and software-related capability, although no information is provided on patents, proprietary products, or innovation outcomes.

Production capacityProduction evidence includes winding and assembly facilities, 12 quality inspectors, valid manufacturing contracts with each associated subcontractor, inventory capacity, documented finished-product inspection procedures, and written supplier-service assessment procedures with records. Reported lead times are within 15 working days off-season and one month during peak season, supporting an established production and fulfillment capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides 3D software design services, directly supporting design-driven and tailored product development.

Product Q&A

Q:What is the warranty period and coverage?

We provide a 1-year warranty from the sale date. If any accessories are damaged, you can send photos, and we will provide free replacements. Technical support is also available.

Q:Can I customize the input and output voltage?

Yes, the input and output voltage are customizable, typically ranging from 220V to 480V, to suit your specific equipment requirements.

Q:Is OEM and ODM service available?

Yes, OEM and ODM services are available. We can customize products according to your specific requirements, including design, logo, and specifications.

Q:What is the Minimum Order Quantity (MOQ)?

For small capacity products with default configuration, the MOQ is 10 sets. For big capacity products, the MOQ is 1 set.

Q:What certificates do your products have?

Our products are certified with CE, ISO9001, and SGS. We can also apply for Form A, Form E, or C/O from local government authorities upon request.