Shenzhen Dowis Electronics Co.,Ltd
Shenzhen Dowis Electronics Co.,Ltd
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PQ32 New Energy Magnetics Transformer DW4986
Caution of Current Transformer :
1. Suggestions of choosing (Take ct for energy meter as example)
(1) Please offer the primary current and secondary current or primary current and ratio as per your requirements. For example if the energy meter is 5(80)A, you may need a current transformer with current to 80A or 100A.
(2) Please specify the accuracy as per secondary circuit or accuracy requirements of energy meter. For example If it's industrial degree meter then you may need high accuracy current transformer such Class 0.5S,Class 0.01/0.02.
(3) Customized terminal design for your primary circuit - if it's not good for fixing or you need to integrated with relay/shunt/terminal block etc then you may need to offer your drawing for design and adapt to the application.
(4) Plz choose the suitable secondary output terminal, if you need to solder and fix it on PCB then you may need to choose PCB/pin type, for other situation you can use lead wires directly.
2. Standard of good current transformer
(1) Plastic casing instead of traditional tape which is anti-dust,ant-shock,anti-flaming for security.
(2) Central rubber hole is more flexible for installation.
(3) Moreover current transformer become advanced and smart, hence 500mT permanent magnetic immunity,high accuracy when cosφ=0.5, smart CT with M-bus or RS485 communication are welcomed as well.
1. Electrical Specification
| Item | Unit | Test Lead | Test Condition | MIN | NOR | MAX |
| Inductance Value | µH | 1-2 | 100KHz,0.3V, Ser | 23 | 25 | 27 |
| µH | 7-8 | 100KHz,0.3V, Ser | 5.3 | 5.5 | 5.7 | |
| Leakage Inductance | µH | 1-2 | 100KHz,0.3V, Ser (N2 Winding Circus) | / | / | 1.2 |
| Q Value | / | 1-2 | 100KHz,0.3V, Ser | 120 | / | / |
| / | 7-8 | 100KHz,0.3V, Ser | 70 | / | / | |
| Dielectric Strength | mA | N1—N2 | 3750Vac,60s | / | / | 1 |
| mA | N1—Core | 2000Vac,60s | / | / | 1 | |
| mA | N2—Core | 2000Vac,60s | / | / | 1 | |
| mA | Coil-Core | 1500Vac,60s | / | / | 1 | |
| Direct Current Resistanc | mΩ | 1-2 | 25℃ | / | / | 10 |
| mΩ | 3-4 | 25℃ | / | / | 35 | |
| mΩ | 7-8 | 25℃ | / | / | 6 | |
| mΩ | 5-6 | 25℃ | / | / | 12 | |
| Insulation Resistance | MΩ | Np-Ns | 500Vdc | 100 | / | / |
2. Drawing (Unit:mm)
3. Environmental Conditions
Shenzhen Dowis Electronics Co., Ltd. is a professional manufacturer of electronic transformers, inductors and filters integrating R&D, production and sales. It is a national high-tech enterprise and has passed the IATF16949:2016 automotive industry quality management system certification, the product has passed the "UL""CQC" and other safety certification. The products are widely used in communication equipment, new energy vehicles, industrial control equipment, high-power LED drive and other market areas.In the industry has a high visibility. In addition to the domestic market, but also exported to many countries in Europe and the United States.
In order to further expand production capacity, it has set up a special test area construction area in zhaoqing YueGui cooperation in 2018 of 14000 square meters of manufacturing center named ZhaoQing Sheng Xiang electronic technology co.,Ltd. Its management technical team has rich experience in cooperating with customers from well-known domestic enterprises and overseas. The design of product can fully follow customer’s needs and service with good quality control system, and it has been recognized by many famous enterprises as the core suppliers. We look forward to cooperating with you.