High Effiiency Audio Toroidal Transformer with ISO9001: 2015

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio, Amplifier,DVD,Aircraft, Audio Equipment,Electric Control,Instrument etc
• Phase: Single
• Model NO.: GWB2348 etc.
• Core: Toroid Core
• Cooling Method: Dry-type Transformer
• Winding Type: Auto-transformer
• Certification: ISO9001-2000, ISO9001, CCC, CE
• Usage: Audio Device, Amplifier, DVD, Loudspeaker
• Frequency Characteristics: High Frequency
• Shape of Core: Ring
• Brand: Grewin High Efficiency Audio Toroidal Transformer
• Type: Toroidal Transformer
• Coil Number: High Flux Density Grain- Oriented Silicon Steel
• Voltage Design: Customized
• Transport Package: Export Standard Carton or Customize Strong Pallet
• Specification: CE
• Trademark: Grewin High Efficiency Audio Transformer
• Origin: China
• HS Code: 85043190
• Production Capacity: 50000 PCS

Product Description

We have passed ISO9001:2015,CE,SGS approval and IEC report

1.Technical parameters
 

Power	Input Voltage(V)		Output Voltage(V)		Dimension OD*H(mm)		Weight (kg)
GWB50VA	220V (230V)		12V		80*38		0.74
GWB100VA	220V (230V)		12V		95*45		1.25
GWB200VA	220V (230V)		12V		112*52		2.05
GWB250VA	220V (230V)		12V		118*54		3.36
GWB500VA	220V (230V)		12V		140*65		4.2
GWB1000VA	220V (230V)		12V		170*75		7.2
GWB1500VA	220V (230V)		12V		180*85		9.75
GWB2000VA	220V (230V)		12V		185*105		12
GWB3000VA	220V (230V)		12V		200*120		16.6
GWB5000VA	220V (230V)		12V		230*135		24

Toroidal Transformer
Power	Dimension (mm)		Efficiency %	Current		Weight
GWB20VA	60*25		>82	10mA		1.200.45kgs
GWB30VA	65*35		>84	10mA		1.200.50kgs
GWB50VA	70*40		>88	20mA		1.151.30kgs
GWB100VA	85*60		>90	30mA		1.151.50kgs
GWB120VA	90*75		>93	40mA		1.102.00kgs
GWB200VA	110*80		>93	100mA		1.102.80kgs
GWB300VA	120*80		>94	150mA		1.083.50kgs
GWB500VA	130*80		>94	150mA		1.085.00kgs
GWB800VA	140*85		>94	200mA		1.086.50kgs
GWB1000VA	140*85		>95	300mA		1.058.50kgs
GWB1500VA	160*90		>95	400mA		1.0512.0kgs
GWB2000VA	180*90		>95	400mA		1.0515.0kgs
GWB4000VA	220*95		>95	500mA		1.0520.0kgs
GWB6000VA	250*95		>95	500mA		1.0525.0kgs

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.  Application:

1. audio equipment 
2. electric control
3. computer
4.instrument
5.telecommunications
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.

3).Note 
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:

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:

NO	Step	Days need
1	Request for quotation	1 day
2	Making quotations	1 day
3	Offer and counter offer	3 days
4	Sending and receiving samples	3-10 days
5	Sample confirmation	3 days
6	Placing a firm order	1 day
7	Paying and receiving the down payment	1-4 day
8	Factory production & Quality inspection	15-20 days
9	Paying and receiving the balance	4 days
10	Delivery of goods	1 days

Contact Information:       
Cathy

Tianjin Grewin Technology Co.,Ltd.
Website:transformer.en.made-in-china.com
Tel:[phone]