Gold Member Since 2011
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Tianjin Grewin Technology Co., Ltd.

Toroidal Transformer 7V 3.2va, Miniature Toroidal Transformer 12V 0.267A, Power Transformer 220V 10va manufacturer / supplier in China, offering Custom Miniature Toroidal Transformer for Solar Inverter, High Quality Toroidal Minature Current Transformer, Accuracy 0.1 0.2 Minature Current Transformer for Electrical Watthour Meter and so on.

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Custom Miniature Toroidal Transformer for Solar Inverter

Purchase Qty.:
100-499 500-999 1,000+
FOB Unit Price: US $1.59 US $1.52 US $1.46
Purchase Qty. (Pieces) FOB Unit Price
100-499 US $1.59
500-999 US $1.52
1,000+ US $1.46
Get Latest Price
Production Capacity: 50000 PCS
Transport Package: Export Standard Carton or Customize Strong Pallet
Payment Terms: L/C, T/T, D/P, Paypal, Money Gram, Western Union

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Basic Info
  • Model NO.: 2.8va 3.2va 4.5va 5va 8va 10va 13va 15va 20va 25va
  • Phase: Single
  • Cooling Method: Dry-type Transformer
  • Certification: ISO9001-2000, UL, ISO9001, CCC, CE
  • Frequency Characteristics: Low Frequency
  • Brand: Grewin Miniature Toroidal Transformer
  • Coil Number: Autotransformer, High Flux Density Grain- Oriented
  • Transformer for Medical Equipment: Low Rise High Efficiency Toroidal Transformer
  • Short-Circuit-Proof Safety: Isolating Transformer
  • Toroidal Transformer Type: 15va 16va 17va 18va 19va 21va 22va
  • Test Process2: Leakage Indutance Test, DC Resistance Test
  • Specification: CE
  • HS Code: 85043190
  • Application: Power, Electronic
  • Core: Toroid Core
  • Winding Type: Multi-winding Transformer
  • Usage: Solar Inverter, Solar Device, Solar Lighting
  • Shape of Core: Ring
  • Coil Structure: CE UL Toroidal Transformer
  • Leads - Length and Insulation: Secondary Windings Connections
  • Application1: Solar Inverter, Solar Device, Solar Lighting
  • 95% Efficiency: Transformer Toroidal Price Design Manufacture
  • Test Process1: Iinductive Voltage Test, Temperature Rise Test
  • Trademark: Grewin Miniature Toroidal Transformer
  • Origin: China
Product Description
Custom Miniature Toroidal Transformer for Solar Inverter

1.  technical parameters.

Custom Miniature Toroidal Transformer for Solar Inverter
We have abtained VDE,UL,CE,ISO9000 approval .we guarantee quality is the first.
Test process

1  .No-load test (included no-load voltage,no load current and no load loss)

 2.iInductive voltage test 

 3. Load test (load voltage and temperature rise

 4. Temperature rise test .

 5.Insulated resistance 

 6.Hi-pot test 

 7.Leakage indutance test 

 8.DC resistance test 

 9.Surface inspection.

3.customized audio toroidal transformer and solar energy transformer   Application:


Custom Miniature Toroidal Transformer for Solar Inverter


Especially low-hum and low-dispersing construction
Low-level of induction
High-grade design casing possible
Statically shield winding and magnetical shield winding optional .

1). Application:

1. audio equipment 
2. electric control
3. computer
4. solar device
6.high-end and middle-end vedio etc

2).  Advantages:

1.High quality 100% copper core

2.a full range of toroidal transformer

3.Specially sales and technical services:5-10Years

4.With 14 years' producing history in transformer induatry

5.our company have cooperated with many customers around the world and gained good reputation at home and abroad.


The above-mentioned toroidal transformer is frequently-used, we can also manufacture the products by customer design. And the specification is for reference, if has the change further, please take the material object as the standard.

4).GREWIN'S Dimension :
External diameter: 40mm-300mm, height :13mm-130mm, Efficiency: 75-98%

we can design the appropriate products according to customers' requirments such as installation dimension, input and output voltage,power...etc.)


 4.product procedure 

The following picture showed you about all finished toroidal transformer production line and package with export standard carton and strong pallets:

Custom Miniature Toroidal Transformer for Solar Inverter


 About us:

 1. Tianjin Grewin Technology Co.,ltd. has always laying great emphasis on our core business philosophy "Quality and Honesty First ". Due to continuous innovative research and development, our products have meet the technical standards and safety standards , which are efficient and environment-friendly. As a professional leading and a main exporter of a wide variety of electronic components in China for many years, we adhere to new products, quality to meet the needs of you and welcome all of you to negotiate

2.Flow chart of trading activities:




Days need


Request for quotation

1 day


Making quotations

1 day


Offer and counter offer

3 days


Sending and receiving samples

3-10 days


Sample confirmation

3 days


Placing a firm order

1 day


Paying and receiving the down payment

1-4 day


Factory production & Quality inspection

15-20 days


Paying and receiving the balance

4 days


Delivery of goods

1 days


Contact Information:                                                        


Tianjin Grewin Technology Co.,Ltd.





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