500kva distribution electric power transformer features the following key advantages: advanced insulation technology for enhanced safety. Low noise operation and minimal maintenance requirements. It is specifically designed for efficient operation in commercial and industrial environments, with a 500kVA capacity that offers both cost effectiveness and environmental performance.
Users can choose aluminum windings to achieve a balance between cost and efficiency, or copper windings for better conductivity, lower losses, and superior heat resistance.
The temperature rise can be selected as 150℃, 115℃ or 80℃. The latter can improve efficiency and extend insulation life under high ambient temperatures or continuous loads, and can use materials up to 220°C or higher grades.
The enclosure types of 500kva distribution electric power transformer include ventilated NEMA 1 enclosures suitable for indoor dry environments, NEMA 3R enclosures with rainproof covers suitable for outdoor/damp environments, and fully enclosed enclosures suitable for dust proof, moisture proof, corrosive or hazardous areas.
|
Product Name |
500kva distribution electric power transformer |
|
High pressure(KV) |
10 KV |
|
High pressure tap range(%) |
±5 /±2 ×2 .5% |
|
Low pressure(KV) |
0.4 KV |
|
Connection symbol |
Dyn11, YNyn0 |
|
Core loss(W) |
646 to680 W |
|
Winding loss(W) |
4.2 to6.9 kW |
|
Exciting current (%) |
≤0.8% |
|
Short circuit impedance(%) |
4.5% to6.5% |
|
Certificates |
CE、ISO9001 |
|
Temperature rise(℃) |
150℃, 115℃ or 80℃ |
This is because a sheet-like core can reduce another type of iron loss "eddy current loss". When the 500kva distribution electric power transformer is working, there is an alternating current in the coil, and the magnetic flux it generates is naturally alternating. This changing magnetic flux generates an induced current in the iron core. The induced current generated in the iron core circulates in a circular pattern within the plane perpendicular to the magnetic flux, so it is called an eddy current. Eddy current loss also causes the iron core to heat up.
To reduce eddy current loss, the 500kva distribution electric power transformer's iron core is made by stacking mutually insulated silicon steel sheets, so that the eddy current flows in a narrow, elongated circuit through a smaller cross section, thereby increasing the resistance on the eddy current path. At the same time, the silicon in the silicon steel increases the material's resistivity, which also plays a role in reducing eddy current.
For 500kva distribution electric power transformer cores, generally, 0.35mm thick cold rolled silicon steel sheets are selected. According to the size of the required core, it is cut into long sheet. In theory, to reduce eddy current, the thinner the silicon steel sheet and the narrower the overlapping sheet strips, the better the effect. This not only reduces eddy current loss, lowers the temperature rise, but also saves the material of silicon steel sheets.
However, when making silicon steel sheet transformer cores, it is not only based on the aforesaid favorable factors, because making the iron core in this way will greatly increase the working time and reduce the effective cross section of the iron core. Therefore, when making transformer cores with silicon steel sheets, it is necessary to consider the specific situation, weigh the pros and cons, and choose the optimal size.
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No. 391, Jingqi Road, Yanpan Industrial Zone, Yueqing City, Zhejiang Province, China
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