Tianjin Grewin Technology Co., Ltd.

Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
Phase: Single
Core: Core-type Transformer
Cooling Method: Dry-type Transformer
Winding Type: Auto-transformer
Certification: ISO9001-2000, UL, ISO9001, CCC

Basic Info
Model NO.: GWB1025 Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, Power, Electronic, Audio, Instrument, Rectifier Frequency Characteristics: Power Frequency Shape of Core: Ring Brand: Grewin Toroidal Transformer Type: Toroidal Transformer Input: 220-240VAC Output: 220-240VAC Power: 250va-500va Frequency: 50Hz/60Hz Model Number: 250va-500va Coil Number: High Flux Density Grain- Oriented Silicon Steel 95% Efficiency: Power Factor: 0.9 to 0.98 Transformer: Converters Ring Transformer Trademark: Grewin Toroidal Transformer Transport Package: Expoort Standard Carton with Srong Pallet Specification: CE, ROHS Origin: Tianjin HS Code: 85043190

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.)