What is the delivery time?

Standard/small orders take 10-15 working days. New customizations require an additional 5-7 days for samples. Large orders may take 15-30 days.

Are samples available and how are they charged?

Samples are supported for serious customers. A sample fee is usually required but can be refunded or deducted upon placing a bulk order. Lead time is 3-5 days.

What is the warranty policy?

We provide a 1-year warranty. Quality issues resulting in damage will be repaired or replaced for free. Common damage causes include overload, short circuits, or harsh environments.

Ei6628 AC Customized Copper Core Input 110V 220V Single Dual Power Transformer

Name: Ei6628 AC Customized Copper Core Input 110V 220V Single Dual Power Transformer
Brand: Hangzhou Udwells Technology Co., Ltd.
SKU: 2230755995

Zhejiang, ChinaHangzhou Udwells Technology Co., Ltd.

US$0.50-1.50

500 Pieces

Product profile

Customization

Available

Application

Power, Electronic, Instrument, Lighting, Rectifier, Audio

Phase

Single

Model NO.

Core

Core-type Transformer

Cooling Method

Dry-type Transformer

Winding Type

Multi-winding Transformer

Certification

ISO9001

Usage

Single-phase Transformer

Frequency Characteristics

Low Frequency

Shape of Core

Operating Temperature

-40ºCTO +125ºC

Storage Temperature

-25ºCTO+85ºC

Customize

Yes

Type

Ei/Toroidal

Installation Method

Vertical/Horizontal/with a Base/with a Cover

Transport Package

Export Standard Carton and Strong Pallet

Specification

EI Series Low Frequency Transformer

Origin

Zhejiang

Production Capacity

200000 PCS/Month

Key features

Customizable Design: Supports full customization including type, installation method, and temperature range.

Wide Power Range: Available from 0.3VA to 2000VA to meet diverse application needs.

High-Quality Materials: Uses 100% pure copper wire and high-grade silicon steel sheets for durability.

Strict Quality Control: 100% factory testing including Hi-Pot, load, and no-load current tests.

Versatile Applications: Suitable for power, electronics, instruments, lighting, and audio equipment.

Multiple Core Types: Offers EI, Toroidal, and R-type transformers for different performance needs.

Professional Support: Provides sample support and technical guidance for specification selection.

ISO9001 Certified: Manufacturing process adheres to ISO9001 quality management standards.

Company profile

High Repeat Buyers ChoiceFast DeliveryPrivate MoldQuality Assurance

Hangzhou Udwells Technology Co., Ltd.

Zhejiang, 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: 3 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤4.56h

AI-Powered supplier vetting

SummaryHANGZHOU UDWELLS TECHNOLOGY CO. Ltd. was founded in 2008 and reports a self-built plant exceeding 15,000 square meters, more than 10 production lines, Europe as a primary export market, and peak-season order fulfillment within 15 working days. It provides multiple customization options, ODM services, and has launched new products within the past year. The supplier also reports OEM service for well-known brands and quality assurance in its quality-control processes. However, no R&D audit documentation, SDK, approved-supplier list, written service procedures, corrective/preventive-action procedures, or complaint-handling procedures were available. Overseas warehouses, showrooms, agents or branches, and offline trade-show participation were not reported. Financial information is insufficient for a credibility judgment, and sustainability-related fire-drill and environmental-assessment status is unknown.

After-Sales capabilityTechnology engineers are responsible for technical support during production and after-sales service, but the supplier has no written procedures or records for effective service assessment, corrective and preventive actions, or customer complaint handling. It also has no overseas warehouse, showroom, agent, or branch, limiting evidence of structured or localized after-sales support.

R&D capabilityThe supplier reports new products within the past year, ODM capability, customization-related R&D services, and use of PS and CAD. It also reports OEM service for well-known brands. Countervailing evidence includes only one year of total R&D engineer experience, no available SDK, and no R&D design-input, output, review, verification, or validation documents for audit.

Production capacityThe supplier reports a self-built plant exceeding 15,000 square meters, more than 10 production lines, complete testing facilities, and peak-season order fulfillment within 15 working days. These explicit operating-scale and delivery statements support a production-capability advantage, although the number of quality-control staff is listed as unavailable.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, flexible customization, and minor customization. It also provides ODM services, demonstrating broad stated customization coverage.

Client casesThe supplier states that it provides OEM services for well-known brands and identifies Europe as a primary export market. These statements indicate some brand and export experience, but no customer names, project details, order references, or verifiable case documentation are provided.

Product Q&A

Q:What specifications are needed for a custom transformer?

Please provide input/output voltage and current, rated power (VA/W), frequency (50Hz/60Hz), construction type (EI/Toroidal), installation method, and insulation grade.

Q:How do I choose between Toroidal and EI transformers?

Toroidal offers higher efficiency and less interference but is costlier. EI transformers are more cost-effective, lighter, and easier to maintain for general industrial use.

Q:What is the purpose of a shielding layer?

A copper foil shielding layer between coils suppresses high-frequency interference, enhancing EMI resistance, which is essential for audio and measuring instruments.

Q:How is transformer quality ensured?

We use pure copper wire, high-grade silicon steel, and VPI process. Every unit undergoes 100% testing including Hi-Pot, inter-winding, and load tests.

Q:What is the MOQ and pricing structure?

Price and MOQ depend on specs and quantity. Standard specs may have lower MOQ (e.g., 100pcs), while full customization requires higher MOQ (e.g., 500-1000pcs).