We have passed ISO9001:2015,CE,SGS approval and IEC report
GW-I Series: High Quality Encapsulated Toroidal Transformers with PinsRemark:A. D refers to the volume of a corresponding transformer, which will be replaced with a digit. For the transformer with a single winding, the corresponding max. volume can be reached; for the transformer with two or more windings, the corresponding volume will be reduced properly.B. Being a tendency of future pin transformer, it is applide with our best self-made toroidal core (Po≤0.9W/Kg) in the result of High Efficiency, Low Power Loss and Low Temperature-rise to be Green, Energy-saving & Environment-friendly.C. Attributed to our Patent Technology, excluding the pins distribution mentioned above, the pins distribution can be freely adjusted by following customer's advice.D. Nice Appearance, Small Size, Moisture Proof & Mould Prevention.E. Pins Quantity can be reduced or increased based on your requirement.Minature Transformers:The dimension of the Control Transformer Usage &Toroidal Coil Structure step-up auto-transformator 380V to 200VThe Partial List of GW-B Series Toroidal Transformers with Cable and Mounting Holes: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 optionalBe 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 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 MachineTransformer Multitester for High & Low FrequencyLayer Insulation Withstand Voltage Tester4.Warning Under no circumstances should both ends of the fixing bolt simultaneously the metal chassis or framework as this would create a potentially dangerous 'shorted-turn'. 5.Certificate We have abtained CE CQC RoHs UL ISO9001:2015,SGS and IEC 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 test 3). Load test (load voltage and temperature rise4). Temperature rise test .5). Insulated resistance 6).Hi-pot test 7).Leakage indutance test 8).DC resistance test 9).Surface inspection.Application:Application:1). audio equipment 2). electric control3). computer4).instrument5).telecommunications6).high-end and middle-end vedio etc
About us:
1.Tianjin Grewin Technology Co.,ltd. has always laying great emsis on our core business loso "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 |
