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Tianjin Grewin Technology Co., Ltd.

Toroidal Transformer, Isolation Toroidal Transformer, UPS Toroidal Transformer manufacturer / supplier in China, offering High Efficiency Toroidal Transformer for UPS Winding Machine, 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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High Efficiency Toroidal Transformer for UPS Winding Machine

Purchase Qty.:
1-99 100-499 500-999 1,000+
FOB Unit Price: US $21.5 US $16.2 US $14.5 US $14.2
Purchase Qty. (Pieces) FOB Unit Price
1-99 US $21.5
100-499 US $16.2
500-999 US $14.5
1,000+ US $14.2
Get Latest Price
Port: Tianjin, China
Production Capacity: 50000 PCS
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: 3va 10va 150va 300va 800va 1500va 4000va 7000va
  • Phase: Single
  • Cooling Method: Dry-type Transformer
  • Certification: ISO9001-2000, UL, ISO9001, CCC, Ce
  • Frequency Characteristics: High Frequency
  • Brand: Grewin Audio Toroidal Transformer
  • Coil Number: Autotransformer, High Flux Density Grain- Oriente
  • Transformer for Audio Equipment: Low Rise High Efficiency Toroidal Transformer
  • 95% Efficiency: Transformer Toroidal Price Design Manufacture
  • Test Process1: Toroidal Transformer No-Load Test
  • Frequency: 10Hz-20kHz
  • Transport Package: Export Standard Carton or Customize Strong Pallet
  • Origin: China
  • Application: Power, Electronic, Instrument, Audio
  • Core: Toroid Core
  • Winding Type: Auto-transformer
  • Usage: Audio Device, Amplifier, DVD, Loudspeaker
  • Shape of Core: Ring
  • Model Number: 40va Audio Toroidal Transformer and Cable TV Trans
  • Transformer Usage: Electronic, Audio, Instrument, Rectifier, Reactor
  • Leads - Length and Insulation: Secondary Windings Connections
  • Voltage Design: Customized
  • Test Process2: Toroidal Transformer Surface Inspection.
  • Trademark: Grewin Audio Toroidal Transformer
  • Specification: CE
  • HS Code: 85043190
Product Description
High Efficiency Toroidal Transformer for UPS Winding Machine

High Efficiency Toroidal Transformer for UPS Winding Machine

High efficiency Toroidal Transformer for Amplifier,winding machine and equipments

High Efficiency Toroidal Transformer for UPS Winding Machine

1.Technical parameters
PowerInput Voltage(V)Output Voltage(V)Dimension
Weight (kg)
GWB50VA220V (230V)12V80*380.74
GWB100VA220V (230V)12V95*451.25
GWB200VA220V (230V)12V112*522.05
GWB250VA220V (230V)12V118*543.36
GWB500VA220V (230V)12V140*654.2
GWB1000VA220V (230V)12V170*757.2
GWB1500VA220V (230V)12V180*859.75
GWB2000VA220V (230V)12V185*10512
GWB3000VA220V (230V)12V200*12016.6
GWB5000VA220V (230V)12V230*13524
Toroidal Transformer 
PowerDimension (mm)Efficiency %CurrentWeight
GWB20VA60*25>8210mA 1.200.45kgs

Minature toroidal Transformer :2.5VA-15VA 

High Efficiency Toroidal Transformer for UPS Winding Machine

2.  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:

High Efficiency Toroidal Transformer for UPS Winding Machine



1. audio equipment 
2. electric control
3. computer
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:
High Efficiency Toroidal Transformer for UPS Winding Machine

About us:

 1. Tianjin Grewin Technology Co.,ltd. has always laying great emphasis on our core business philosophy "Quality and Honesty First ". 

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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