How long does delivery take?

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

Can samples be provided and how are they charged?

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

What causes transformer failure and is there a warranty?

Failures are often due to overload, short circuits, or harsh environments. We provide a 1-year warranty for quality issues, offering free repair or replacement.

Ei 12V to 220V 3.2va 2.8va Potted Transformer

Name: Ei 12V to 220V 3.2va 2.8va Potted Transformer
Brand: Hangzhou Udwells Technology Co., Ltd.
SKU: 2238008825

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

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

EI Core Design: Core-type EI structure ensures stable performance for single-phase applications.

Dry Cooling Method: Dry-type transformer design eliminates oil leakage risks and ensures safety.

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

Full Customization: Supports full customization, flexible customization, and minor customization options.

High Efficiency: Uses new high-grade silicon steel sheets and 100% pure copper wire for efficiency.

VPI Process: Vacuum impregnation process ensures moisture resistance and insulation strength.

100% Factory Testing: Every unit undergoes Hi-Pot, inter-winding, and load tests before shipment.

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: ≤3.74h

AI-Powered supplier vetting

SummaryHANGZHOU UDWELLS TECHNOLOGY CO. Ltd. is a combined company with a strong technological base and significant production capacity. It offers OEM services for popular brands and operates more than 10 production lines. However, there are gaps in R&D documentation and service capability procedures. The company does not hold SDKs for development, nor does it have overseas facilities or participate in trade shows. Its primary export market is Europe, and it has proximity to major ports in China.

Supplier typeThe supplier is identified as a 'Combined' type company, indicating a diverse business scope.

After-Sales capabilityThe supplier provides technical support for production and after-sales service but lacks documented procedures for service capability and customer complaint handling.

R&D capabilityThe company lacks R&D audit documentation and SDK availability, indicating limitations in software development and innovation processes.

Production capacityThe supplier operates 27 production lines, indicating robust manufacturing capacity. Its annual production output ranges from US$1 Million to US$2.5 Million.

Customization capabilityThe supplier provides OEM services for well-known brands, demonstrating its ability to customize production.

Product Q&A

Q:What specifications are needed for production?

Please provide Input Voltage with fluctuation range, Output Voltage and Current, Rated Power (VA/W), Frequency (50Hz/60Hz), Construction type (Toroidal/EI/R), Installation method, and Insulation Grade.

Q:Which should I choose: Toroidal or EI transformer?

Toroidal offers high efficiency and low interference but is larger and costlier. EI is smaller, lighter, cheaper, and easier to maintain, suitable for general industrial use.

Q:Is there a shielding layer in transformers?

Yes, a copper foil shielding layer can be added between primary and secondary coils to suppress high interference and enhance EMI resistance.

Q:How do you ensure quality and service life?

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

Q:What is the price and minimum order quantity?

Price depends on power and complexity. MOQ is lower for standard specs (e.g., 100pcs) and higher for custom molds (e.g., 500-1000pcs). Larger quantities reduce unit price.