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| 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 | Â 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 testÂ
3). Load test (load voltage and temperature rise
4). Temperature rise test .
5). Insulated resistanceÂ
6).Hi-pot testÂ
7).Leakage indutance testÂ
8).DC resistance testÂ
9).Surface inspection.3.customized audio toroidal transformer and solar energy transformer   Application:
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1). Application:
1. audio equipmentÂ
2. electric control
3. computer
4.instrument
5.telecommunications
6.high-end and middle-end vedio etc
2).  Advantages:
1.High quality 100% copper core2.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).NoteÂ
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.Â
4).GREWIN'S Dimension :
External diameter: 40mm-300mm, height :13mm-130mm, Efficiency: 75-98%Â
we can design the appropriate products according to customers' requirments such as installation dimension, input and output voltage,power...etc.)
4.product procedureÂ
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 ".Â
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 &Â Quality inspection |
15-20 days |
9 |
Paying and receiving the balance |
4 days |
10 |
Delivery of goods |
1 days |
Contact Information:Â Â Â Â Â Â Â
Cathy
Tianjin Grewin Technology Co.,Ltd.
Website:www.grewin-tech.com
Tel:86-22-84943756Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Gwtee Electric Manufacture Co., Ltd , http://www.dgflashlight.com