25va to 500va 250V Toroidal Transformer for Communication

• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio, Communication,Machine Control
• Phase: Single
• Core: Toroid Core
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: 20va 50va 100va 250va 300va 500va 1500va 2kva 3kva
• Cooling Method: Dry-type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, UL, ISO9001, CCC, CE
• Usage: Grewin Communication Toroidal Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Grewin Communication Toroidal Transformer
• Coil Structure: CE UL Toroidal Transformer
• Coil Number: Autotransformer, High Flux Density Grain- Oriented
• Toroidal Transformer Type: 194va 25va Va 500va 3kVA 6000va
• Transformer for Equipment: Low Rise High Efficiency Toroidal Transformer
• 95% Efficiency: Transformer Toroidal Price Design Manufacture
• Toroidal Transformer: Step up Pulse Transformer Toroid for Communication
• Round Toroidal Transformer: Isolating Transformer
• Transport Package: Expoort Standard Carton with Srong Pallet
• Specification: CE, ROHS
• Trademark: Grewin Communication Toroidal Transformer
• Origin: Tianjin
• HS Code: 85043190
• Production Capacity: 100000/Month

Product Description

Wire leads Toroidal Transformer for Communication

 

Toroidal Transformer  I
Power	Thermal Fuse		Current Fuse	Dimension (mm)		Approval Mark
GWB25VA	135ºC 250V 2A		250V  T  2A	80*35		CE UL TUV CQC
GWB30VA	135ºC 250V 2A		250V  T  2A	83*35		CE UL TUV CQC
GWB40VA	135ºC 250V 2A		250V  T  2A	87*35		CE UL TUV CQC
GWB50VA	135ºC 250V 2A		250V  T  2A	93*34		CE UL TUV CQC
GWB60VA	135ºC 250V 2A		250V  T  2A	93*35		CE UL TUV CQC
GWB80VA	135ºC 250V 2A		250V  T  2A	102*35		CE UL TUV CQC
GWB105VA	135ºC 250V 2A		250V  T  2A	114*38		CE UL TUV CQC
GWB120VA	135ºC 250V 2A		250V  T  2A	113*41		CE UL TUV CQC
GWB140VA	135ºC 250V 2A		250V  T  2A	114*42		CE UL TUV CQC
GWB150VA	135ºC 250V 2A		250V  T  2A	117*43		CE UL TUV CQC
GWB160VA	135ºC 250V 5A		250V  T  5A	120*43		CE UL TUV CQC
GWB180VA	135ºC 250V 5A		250V  T  5A	125*42		CE UL TUV CQC
GWB200VA	135ºC 250V 5A		250V  T  5A	124*49		CE UL TUV CQC
GWB220VA	135ºC 250V 5A		250V  T  5A	127*50		CE UL TUV CQC
GWB240VA	135ºC 250V 5A		250V  T  5A	129*48		CE UL TUV CQC
GWB250VA	135ºC 250V 5A		250V  T  5A	130*52		CE UL TUV CQC
GWB260VA	135ºC 250V 5A		250V  T  5A	130*53		CE UL TUV CQC
GWB280VA	135ºC 250V 5A		250V  T  5A	138*45		CE UL TUV CQC
GWB300VA	135ºC 250V 5A		250V  T  10A	138*54		CE UL TUV CQC
GWB320VA	135ºC 250V 5A		250V  T  10A	138*54		CE UL TUV CQC
GWB340VA	135ºC 250V 5A		250V  T  10A	138*54		CE UL TUV CQC
GWB360VA	135ºC 250V 5A		250V  T  10A	142*55		CE UL TUV CQC
GWB380VA	135ºC 250V 5A		250V  T  10A	146*54		CE UL TUV CQC
GWB400VA	135ºC 250V 5A		250V  T  10A	148*56		CE UL TUV CQC
GWB420VA	135ºC 250V 5A		250V  T  10A	148*56		CE UL TUV CQC
GWB440VA	135ºC 250V 5A		250V  T  10A	148*60		CE UL TUV CQC
GWB460VA	135ºC 250V 5A		250V  T  10A	149*64		CE UL TUV CQC
GWB480VA	135ºC 250V 5A		250V  T  10A	153*59		CE UL TUV CQC
GWB500VA	135ºC 250V 5A		250V  T  10A	155*62		CE UL TUV CQC

 

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

High efficiency Toroidal Transformer

1.toroidal transformer for medical equipment

Product description:

Medical Toroidal transformer:

Medical Equipment: Beyond the Toroidal Transformer has a common transformer function,

its anti-electric strength and resistance to damp heat capacity far higher than the national standards and

industry standards.

 

Additionally oriented towards the requirements of EN 60601

Safety Temperature Limiter recommended

Security Value specified

In many cases with statically shield winding to discharge capacitively coupled

interferences, or to monitor the insulation

Especially low leakage current, which clearly under-runs the required norms(<<5 mA )

Strengthened or enhanced insulation

At minimum equipped with basic insulation

eightened creepage distance and sparking distance in air

Reduced inrush current

 

Features:

They should pay attention to the air clearance, leakage current, test voltage etc. We use the advanced machine to make sure the windings are very good performance. It should avoid the cables' broken during the production.All the wire harnesses, product enclosures etc whould be treated very carefully.

 

Application:

Medical grade isolation transformers are installed in medical devices used in hospitals, medical research facilities, and biomedical companies throughout the world. Our medical toroidal transformers are strictly monitored under safety rules, guidelines and governing laws. 

2.toroidal transformer for audio technology

Features:

1. Especially low-hum and low-dispersing construction, Low-level of induction

High-grade design casing possible,Statically shield winding and magnetical shield winding optional.

2. Low noise transformer designs will meet your audio needs.

3. In an audio application, unfiltered noise or unwarranted harmonic distortions can produce signal spikes that will affect the overall sound quality. Our unique Quiet designs will provide a long term solution for your audio needs, while not sacrificing overall size and cost.

4. More than ten years experience in this industry, our engineers will work closely with your team and develop the best solution for your audio application.

 

General Data:      

1.Rated input voltage 230 Vac      

2.Rated output voltage 2 x 12 - 2 x 35 Vac      

3.Power 15 - 625 VA      

4.Insulation class B      

5.Maximum ambient temperature 40 °C      

6.Efficiency up to 95 %      

7.Degree of protection IP 00

 

Advantages:      

1.Minimum size at high output      

2.Low weight      

3.Double output voltage for series or parallel connection      

4.Protected against overload by integral temperature fuse      

5.Minimal no-load losses      

6.Outstanding temperature behaviour thanks to low magnetic leakage field  

7.Very low noise field

 

Application:

Power amplifier / Line Level Preamplifier / Acoustic Monitor / Power Conditioner      Aktive subwoofer / UniField Speaker / Loudspeaker / Center speaker              Powered subwoofer system / Indoor Or Outdoor Bookshelf Speakers / Home audio

Receivers / Theater amplifiers / Zone amplifiers  / Multi-room amplifiers / Network amplifiers / Art speakers

3.toroidal transformer for UPS power supply

Features:

1.Low magnetic leakage         

2.Low no-load losses                              

3.Low mechanical hum

4.High efficiency

5.High-performance

6.Light weight ,compact size

7.Low temperature rise

8.Running a good performance

9.Low magnetic interference

10.Minimum stray magnetic field,Easy to install.

 

Application:

1.UPS Power Supply.

2.Power amplifier  

3.Electric control

4.Medical equipment     

5.Telecommunications

6.Instrument                

7.Automatic control equipment

8.Outdoor light

9.Audio device.

10.Mechanical equipment

4.toroidal transformer for solar technology

Purpose to describe:

Toroidal transformers of highest quality, alligned for inverter application.    

1.Especially high degree of efficiency      

2.Low temperature increase      

3.Low noise development      

4.Compact built      

5.Individual configuration       

Features:

1.Low tempreture rise (65ºC Max)  

2.Single-phase toroidal transformers, power range from 0.8VA to 10000VA

3. Designed and tested according to EN61558. Suitable for installation in electronically equipments, medical equipment etc

4.Short circuit and overload protected withthermal fuse on primary side.

5.Up to 50% less weight than a similar conventional transforme

6.Low magnetisation currents and no-load losses.

Application:

1.Solar Energy Generating Systems

2.Stepper motor supply

3.Inverter and converter.

4.Servo motor supply

5.Wind power generation system

6.Community Antenna Television equipment

7.Satellite television receiving equipment

4.Minature Toroidal Transformer 2.5VA-25va


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. 

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.)
 
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

To compare with the traditional EI Transformer, the Toroidal Transformer has the advantages are small size, leakage magnetic is samll, high efficency, internal resistance is samll and fast raction.
1.
Application:
Electronic meter and apparatus
Cable TV and digital network
Electronic control
Medical equipment
New electric power supply
Decorative illumination system
Monitoring and control equipmen.
2.
Equipment:
Over 50 sets toroidal/annular/ ring coil winding machines, 3 EI type transformer lines, 2 sets of vacuum annealing furnaces, A set of nitrogen and hydrogen production equipment.
3.
Warning
Under no circumstances should both ends of the fixing bolt simultaneously contact the metal chassis or framework as this would create a potentially dangerous 'shorted-turn'.
4.
Certificate
The certificate of our transformer has CE CQC RoHs UL.

Contact Information:                                                        
Alice
Tianjin Grewin Technology Co.,Ltd.
Website:transformer.en.made-in-china.com
Tel:[phone]
MT:86-13072088960