Wenzhou Shuowei Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of low voltage porcelain bushing in China, also supports customized service. Welcome to wholesale bulk advanced low voltage porcelain bushing in stock here from our factory. If you have any enquiry about quotation, please feel free to email us.
Overview
Transformer bushing serves as an essential outlet device that facilitates the connection of high voltage and low voltage leads from within the transformer to the exterior of the fuel tank. It is designed with a specified level of electrical strength and possesses sufficient mechanical strength to endure various operational stresses. The operating current of the casing is a critical factor that influences the selection of the cross-sectional area of the conducting part, as well as the overall structure of the connector.
The casing of the transformer bushing is primarily constructed from materials such as brass, porcelain bottles, and epoxy resin. These materials are chosen for their superior electrical properties and robust mechanical strength, which enable the bushing to withstand severe natural environmental conditions and resist chemical corrosion. The inclusion of a high-quality porcelain sleeve within the design provides an extra layer of insulation protection, thereby ensuring safe and reliable transmission of electrical current. The ceramic bushing is extensively utilized in power transformers, distribution transformers, and a wide array of high-voltage electrical equipment. As an ideal choice for connecting cables and transformers, the transformer bushing effectively prevents the leakage of transformer oil. It also acts as a barrier against external environmental factors, such as moisture, dust, and other corrosive substances, thereby maintaining the integrity and performance of the electrical system.
Conditions of use
*Ambient temperature: -45 degrees to +40 degrees.
*Altitude: ordinary type casing does not exceed 1000 meters, enhanced and anti-pollution type casing does not exceed 2500 meters.
*Transformer bushing is suitable for light pollution areas, anti-pollution type casing is suitable for heavy pollution areas.
*Installation Angle: vertical or inclined Angle does not exceed 30 degrees.
General electrical performance
|
Rated voltage (kV) |
Maximum voltage (kV) |
60 s power frequency withstand voltage (effective value) |
Lightning impulse dry withstand voltage (peak) |
|
|
dry |
damp |
full wave |
||
|
1 |
|
8 |
|
|
|
6 |
7.2 |
26 |
23 |
60 |
|
10 |
12 |
42 |
30 |
75 |
|
20 |
24 |
58 |
50 |
125 |
|
35 |
40.5 |
98 |
80 |
200 |
|
66 |
72.5 |
147 |
140 |
325 |
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