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.