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 1). Application: 1. audio equipment 2). Advantages: 3.Specially sales and technical services:5-10Years  3).Note  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 ". 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  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  Alice Tianjin Grewin Technology Co.,Ltd. tel:86-22-84943756 Website: http://www.grewin-tech.com http://grewin-tech.en.alibaba.com  Â
Step up Toroidal Transformer for LED Lighting
1.technical parameters
Toroidal Transformer  I
Power
Thermal Fuse
Current Fuse
Dimension (mm)
Approval Mark
GWB25VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
80*35
CEÂ ULÂ TUVÂ CQC
GWB30VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
83*35
CEÂ ULÂ TUVÂ CQC
GWB40VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
87*35
CEÂ ULÂ TUVÂ CQC
GWB50VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
93*34
CEÂ ULÂ TUVÂ CQC
GWB60VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
93*35
CEÂ ULÂ TUVÂ CQC
GWB80VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
102*35
CEÂ ULÂ TUVÂ CQC
GWB105VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
114*38
CEÂ ULÂ TUVÂ CQC
GWB120VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
113*41
CEÂ ULÂ TUVÂ CQC
GWB140VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
114*42
CEÂ ULÂ TUVÂ CQC
GWB150VA
135ºC 250V 2A
250VÂ Â TÂ Â 2A
117*43
CEÂ ULÂ TUVÂ CQC
GWB160VA
135ºC 250V 5A
250VÂ Â TÂ Â 5A
120*43
CEÂ ULÂ TUVÂ CQC
GWB180VA
135ºC 250V 5A
250VÂ Â TÂ Â 5A
125*42
CEÂ ULÂ TUVÂ CQC
GWB200VA
135ºC 250V 5A
250VÂ Â TÂ Â 5A
124*49
CEÂ ULÂ TUVÂ CQC
GWB220VA
135ºC 250V 5A
250VÂ Â TÂ Â 5A
127*50
CEÂ ULÂ TUVÂ CQC
GWB240VA
135ºC 250V 5A
250VÂ Â TÂ Â 5A
129*48
CEÂ ULÂ TUVÂ CQC
GWB250VA
135ºC 250V 5A
250VÂ Â TÂ Â 5A
130*52
CEÂ ULÂ TUVÂ CQC
GWB260VA
135ºC 250V 5A
250VÂ Â TÂ Â 5A
130*53
CEÂ ULÂ TUVÂ CQC
GWB280VA
135ºC 250V 5A
250VÂ Â TÂ Â 5A
138*45
CEÂ ULÂ TUVÂ CQC
GWB300VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
138*54
CEÂ ULÂ TUVÂ CQC
GWB320VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
138*54
CEÂ ULÂ TUVÂ CQC
GWB340VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
138*54
CEÂ ULÂ TUVÂ CQC
GWB360VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
142*55
CEÂ ULÂ TUVÂ CQC
GWB380VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
146*54
CEÂ ULÂ TUVÂ CQC
GWB400VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
148*56
CEÂ ULÂ TUVÂ CQC
GWB420VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
148*56
CEÂ ULÂ TUVÂ CQC
GWB440VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
148*60
CEÂ ULÂ TUVÂ CQC
GWB460VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
149*64
CEÂ ULÂ TUVÂ CQC
GWB480VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
153*59
CEÂ ULÂ TUVÂ CQC
GWB500VA
135ºC 250V 5A
250VÂ Â TÂ Â 10A
155*62
CEÂ ULÂ TUVÂ CQC
Toroidal TransformerÂ
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
Test process
3.customized audio toroidal transformer and solar energy transformer  Application:
2. electric control
3. computer
4.instrument
5.telecommunications
6.high-end and middle-end vedio etc
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2.a full range of toroidal transformer
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.)
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2.Flow chart of trading activities:
Contact Information:Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
MT:86-13072088960
Step up Toroidal Transformer for LED Lighting
1.technical parameters
Step up Toroidal Transformer for LED Lighting
Model NO.: 3va 10va 50va 100va 500va 1000va 3000va 6000va
Usage: Lighting, Ourdoor Lighting, Garden Lighting
Frequency Characteristics: Low Frequency
Shape of Core: Ring
Brand: Grewin Toroidal Transformer
Model Number: Customized Toroidal Transformer 3va 10va 50va 100V
Coil Number: High Flux Density Grain- Oriented Silicon Steel
Input: 220V 240V 120V 150VAC to 24V 110V to 24V
Loading Voltage: 0-120V-240V
Frequency: 50Hz/60Hz
95% Efficiency: Toroidal Transformer Power Factor: 0.9 to 0.98
Power: 100va 3000va 6000va 8000va Transformer for Audio E
Transformer for Medical Equipment: Low Rise High Efficiency Toroidal Transformer
Leads - Length and Insulation: Secondary Windings Connections
Voltage Design: Customized
Trademark: Grewin Toroidal Transformer for Lighting
Specification: CE
Origin: China
HS Code: 85043190
Model NO.: 3va 10va 50va 100va 500va 1000va 3000va 6000va
Usage: Lighting, Ourdoor Lighting, Garden Lighting
Frequency Characteristics: Low Frequency
Shape of Core: Ring
Brand: Grewin Toroidal Transformer
Model Number: Customized Toroidal Transformer 3va 10va 50va 100V
Coil Number: High Flux Density Grain- Oriented Silicon Steel
Input: 220V 240V 120V 150VAC to 24V 110V to 24V
Loading Voltage: 0-120V-240V
Frequency: 50Hz/60Hz
95% Efficiency: Toroidal Transformer Power Factor: 0.9 to 0.98
Power: 100va 3000va 6000va 8000va Transformer for Audio E
Transformer for Medical Equipment: Low Rise High Efficiency Toroidal Transformer
Leads - Length and Insulation: Secondary Windings Connections
Voltage Design: Customized
Trademark: Grewin Toroidal Transformer for Lighting
Specification: CE
Origin: China
HS Code: 85043190
Name: