Name:

3va 25va 220v Power Miniature Toroidal Transformer for Solar Lighting Solar System

Specifications

2.84va 3.75va 5va 10va 20va 40va 60va 80va 100va toroidal Coil Structure  toroidal transformer for solar with CE,UL approval                            

                                                   

1.We have abtained VDE,UL,CE,ROHS,ISO9000 Approal and SGS Audit Supplier in China,We guarantee quality is the first:

 2.84va 3.75va 5va 10va 20va 25va minature toroidal Coil Structure 

toroidal transformer for solar with CE,Rohs,UL approval

The Partial List of GW-B  Series Toroidal Transformers with Cable and Mounting Holes:

Big power toroidal transformer:

How to design Transformer ?

 
Transformer capacity is rated in Volt-Amps (VA) which is generally the same as 

wattage (Watts).Most loads are labeled with their proper operational voltage (Volts),

current (Amps), frequency (Hz), and wattage (Watts or VA).

When you need to design a transformer,we must know the mainly below parameters 

to be customized:

GREWIN's Custom Toroidal Transformers 

Dual 110V Power Transformer:

For the international market request, these types of the GREWIN Transformers are designed

into dual primaries for 110V. No matter what about your local voltage is 110V or 220V, you

should use them. Below are the methods for using:
1. If you are using 110VAC(such as Taiwan, US), Please parallel the two primaries 110V. Please

pay attention to the terminals of 110V must be short circuit, and the terminals of 0V must be

short circuit.

2.If you are using 220VAC(such as Hongkong, China Mainland, Europe), Please series the two primaries.  Please pay attention to one terminals of 0V must be short circuit with another

terminals of 110V.

WHY CHOOSE US?

1. Quality and honest first!  

A.  Flexible service for diffierent transformers with high efficiency performance.

B.  Over 40 years experience of transformer designing and producing.
C. 100% test of every single product we produce from incoming material checking.       
D.  UL, CUL, CE, ROHS, ISO9001:2008
E.  We offer custom-made transformers, OEM and ODM are welcome
F.  We deliver the quality you expect at consistently competitive prices
G. Transformer quality lifetime:10 Years.
H. Specialty Sales service:5 -10 Years

I.Transformers Test: 100% test before the shipment

2.Wide Product range:

(1) UL/CUL approved class 2 transformer, from 5VA to 100VA

( 2) CE, ROHS approved, EI, UI laminated encapsulated transformers, from

      0.35VA to 60VA

(3)CE approved, AC(DC) to DC PCB mounted transformer (max power, 5VA), Pin

    layout is the same as EI30 transformers.

(4) CE ROHS approved other toroidal transformer, power 50VA up to 10000VA

(5) other EI laminated low frequency transformer, all meet ROHS requirements .

   (EI14, EI28   EI30 EI42 EI57 EI60 etc.)

(6) High frequency ferrite core transformers :ETD EE EFD SMD PQ RM series.

(9) Planar transformers, up to 6500VA

(10)Current Transformer:

split core current transformer, DC immune current transformer, PCB mounted current transformer, zero phase current transformer, precision current transformers, clamp on current transformer

(11)toroidal inductors, SMD inductors, other inductors

A.

1. Installation:
Horizontal (non-conventional-type base plate), sunk, side type, and bridge.

2.Application:
Especially low-hum and low-dispersing construction
Low-level of induction
High-grade design casing possible
Statically shield winding and magnetical shield winding optional .

Be used widely such as audio equipment,communication,new energy areas,Electrical control,Cable TV network etc.         

3.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 as below:
. Automatic Winding Machine
. Semi-automatic Winding Machine
. Toroidal Winding Machine
. Insert Lamination Machine
. Wave Soldering Machine
. Plastic Termal Ultraviolet Machine
. Domino Ink Jet Printing Machine

 Transformer Multitester for High & Low Frequency
 Layer Insulation Withstand Voltage Tester

4.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'.
5.Certificate
The certificate of our transformer has CE CQC RoHs UL
6.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.
7.GREWIN'S Dimension : External diameter: 55mm-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.)

B.Dual 110V Power Transformer:

For the international market request, these types of the GREWIN Transformers are designed into dual primaries for 110V. No matter what about your local voltage is 110V or 220V, you should use them. Below are the methods for using:

1. If you are using 110VAC(such as Taiwan, US), Please parallel the two primaries 110V. Please pay attention to the terminals of 110V must be short circuit, and the terminals of 0V must be short circuit.

2.If you are using 220VAC(such as Hongkong, China Mainland, Europe), Please series the two primaries.  Please pay attention to one terminals of 0V must be short circuit with another terminals of 110V.

3.GREWIN has various kinds of state-of-the-art equipment, which are used in production, sampling and testing. Our equipments enable us to produce good quality products efficiently.

  4.The following picture showed you about all finished toroidal transformer production line and package with export standard carton and strong pallets:

5.About us:

Tianjin Grewin Technology Co.,ltd. has always placed great emphasis on our core business philosophy "Quality and Honesty First ". Due to continuous innovative research and development, technical standards and efficient.A professional leading and a main exporter of a wide variety of electronic components in China for many Years.

 6. We can manufacture High Frequency Transformers,EI Power Transformers.Below is our mainly products with much advantages in our market: 

7.Flow chart of trading activities:

8.Acceptance of the Conditions:

All orders accepted by GREWIN are subject to the general sale conditions herein set forth, which are understood and accepted by the Purchaser when passing the order and/or upon receipt of GREWIN invoices. Other conditions as well as any verbal agreement are considered valid only if specifically confirmed by GREWIN in writing.

9.Payment terms:

(1). T/T 100% or 50% deposit by T/T in advance, balance amount to be paid 7 days before delivery.

(2). By irrevocable L/C at sight, to be issued immediately against confirmed order.

(3). Payment by T/T, if order amount is less than USD 20,000.

10.Sample terms:

(1). Samples will be sent subject to advance payment to cover the courier charge and samples charge.

(2). You are pleased to instruct your courier company to pick up samples in our TianJin, China office at your expenses. For pick-up details, please advise your courier company to contact us.

(3). Delivery time 3-10 working days.

11.Contact Information:                                                    

Contact Information:               

Cathy Li 

Tianjin Grewin Technology Co.,Ltd

E-mail:cathy(at)grewin-tech.com

skype:grewin.ella