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Shenzhen Dowis Electronics Co.,Ltd
5 Years
| Ask Lasest Price | |
| Brand Name : | Dowis |
| Model Number : | EC28 |
| Certification : | CE, UL, RoHs, ISO9001, 16949 |
| Payment Terms : | T/T, L/C |
| Delivery Time : | 3-4Weeks |
EC28 Miniature Current Transformer Manufacturer Customized DW4351
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 certifications. The products are widely
used in communication equipment, new energy vehicles, industrial
control equipment, high-power LED drives and other market areas.
The industry has 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
products can fully follow customer’s needs and services with a good
quality control system, and it has been recognized by many famous
enterprises as the core suppliers. We look forward to cooperating
with you.
1. CONFIGURATION & DIMENSIONS (Unit: mm)
2. SCHEMATIC:
3.PROCESS OF WINDING:
| Winding | Retaining Wall | Pin position | Wire & Description | Winding Method | Groove Position | Insulating Tape ( light yellow) | Tube | Method of entering Axle | Direction of entering Axle | ||||||
| Pin1 | Pin12 | Start | End | TS | Start | End | Tape type | TS | Start | End | |||||
| N1A | 3mm×4Ts | 3mm×4Ts | -6 | Reserved wire | 2UEWTwisted wire∮0.10mm×20 bar | 30 | Tightly wind 2 layers, Add 10.5mm barrier tape between layers. | Between Pin5 & Pin 6 | Pin6 | 16.5mm | 3 | 21L×15mm | 21L×15mm | Pin1-6 towards right | front |
| The reserved length of N1B is not cut off after winding | Foot bottom | ||||||||||||||
| N2 | / | / | -11 | -10 | Copper wire 0.1X15mm | 3 | Share one piece of copper foil, wound in the middle | Between Pin10 & Pin11 | Between Pin9 & Pin10 | 16.5mm | 3 | 19L×10m | / | ||
| N3 | / | / | / | -12 | Copper wire 0.1X15mm | 3 | / | Between Pin11 & Pin 12 | 15L×10mm | 19L×10mm | |||||
| N1B | 3mm×2Ts | 3mm×2Ts | Reserved wire | -5 | 2UEWwisted wire∮0.10mm×20 bar | 15 | Tightly wind | Pin6 foot bottom | Between Pin4 & Pin5 | 16.5mm | 3 | / | 21L×15m | ||
4.ELECTRICAL CHARACTERISTICS:
| Item | Test Terminal | Test Condition | Standard Requirement | Equipment | |||
| Semi-finished goods | Manufactured goods | QC Exam | |||||
| Inductance Test | 6 | 5 | 1.0KHz,0.3V | 654~696uH | 652~698uH | 650~700uH | TH1062 or equal |
| Leakage Test | 6 | 5 | 1.0KHz,0.3V | 20uH max | 20uH max | 20uH max | TH1062 or equal |
| (short connect to other Pin) | |||||||
| Q Value | 6 | 5 | 1.0KHz,0.3V | 13 MIN | 13 MIN | 13 MIN | TH1062 or equal |
| Direct Current Resistance | 6 | 5 | DC 25℃ | 320mΩ max | 320mΩ max | 320mΩ max | TH2511 or equal |
| 11 | 10 | 32mΩ max | 32mΩ max | 32mΩ max | |||
| 10 | 12 | 32mΩ max | 32mΩ max | 32mΩ max | |||
| Turns Test | All Winding | 20KHz,0.1V | 45:3:3(±0.2Ts) | CH3250 or equal | |||
| High-Voltage Insulation Test | Primary——Secondary | AC-50Hz-1.0mA | 3750Vac, 2 Sec | 4500Vac, 2 Sec | 3750Vac, 60 Sec | CJ2670 or equal | |
| Primary——Core | AC-50Hz-1.0mA | 1750Vac, 2 Sec | 2100Vac, 2 Sec | 1750Vac, 60 Sec | |||
| Secondary——Core | AC-50Hz-1.0mA | 1750Vac, 2 Sec | 2100Vac, 2 Sec | 1750Vac, 60 Sec | |||
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