Introduction about Embedded Pole
Update time:2023.05.22 Views:718
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1. Embedded pole structure diagram and working principle：
Embedded pole, which is embedded vacuum interrupter, is a whole part sealed by epoxide resin casting vacuum interrupter, main conductive circuit, mounting elements, successfully resolved the environmental tolerance problems of matched vacuum breaker.
Embedded pole is the embodiment of vacuum circuit breaker insulation technology has made great progress. The insulation of vacuum circuit breaker experienced three-generation of air insulation, composite insulation, and solid insulation. In the air insulation, the electrified part is absolutely exposed in the air, which insulation level will be changed by air humidity, dust, crash in transit, as well as small animal. In the composite insulation, the vacuum interrupter is protected in the epoxide resin sleeve but not whole electrified part, so the inner still be influenced by dust, insects, and other factors. In the third solid insulation (that is embedded pole), using epoxide resin sealing the vacuum interrupter and main conductive part by special technics, which reduces the vacuum interrupter size, absolutely away from influence by outer environment (dust, moisture), increase anti-weatherability; the epoxide resin is not only the main insulation of primary part, but also its mechanical support, which electric field and force distribution better than each kind structure of insulation plate structure.
The structure drawing of embedded pole is shown as below picture:
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The fixed conductive surface adopts screw fastening method to contact with upper outlet base of embedded pole; while the moving part is connected to the lower outlet by soft link or spring. The embedded pole is connected to the primary conductive part of network by outer conductive surface of upper and lower outlet; realize the opening and closing by using simultaneous connection of insulation lever, moving conductive rod of vacuum interrupter, and operating mechanism of vacuum circuit breaker.
2.The development trend and marketing application prospect of embedded pole：
When the outer insulation of miniaturized vacuum interrupter can not meet the standard parameters, the embedded pole is the effective method to ensure insulation. Embedded technical application is the certain trend of product miniaturization and extend development.
Due to special advantages (good insulation property, miniaturization, maintenance-free, easy installation), the embedded pole is become the development trend of switch industrial medium voltage circuit breaker in home and abroad so far (the embedded pole type vacuum circuit breaker has the trend of replacing VS1 insulation tube type vacuum circuit breaker in recent two years). The embedded technical has more and more application range, and widely application prospect in power industrials.
3. Instruction and prominent advantage of VACEM embedded pole：
With many years experience, VACEM is the earlier manufacturer to research and develop embedded pole in China, which product leads over other factories. So far, VACEM has already produced and used tens thousand of embedded poles, partial product has exported to foreign switch manufacturers and got good reputation.
4. Prominent advantage of VACEM embedded pole:
a) Key part adopts high quality material to ensure whole property of embedded pole.
b) All embedded pole adopts special vacuum interrupter designed by ourselves to ensure insulation, breaking, and other integrated property.
c) Patent technical contact structure has small contacting resistance to effectively reduce heat and current consumption generated by switch electrified operation.
d) Special embedded technics and structure design guarantee low partial discharging.
e) High insulation level, such as the power frequency of 12kV embedded pole up to 55 to 60kV, and lightning impulse up to 95 to 100kV, which can meet using requirement of 3000m altitude.
f) Conductive method adopts stable solid connection to ensure safety and reduce temperature-increasing maximatily.
g) Adopt special buffer protect technics, to ensure interface property between buffer, interrupter, and epoxide resin, and ensure reliability of product electrified operation.
h) All embedded pole will provide insulation lever, soft link, and other spare parts to ensure easy-installation.
i) 100% adjusting and inspecting all lever compression (contact pressure) to qualified range of every embedded pole to ensure the best using performance.
j) Perfect test and inspect methods to guarantee strictly control the quality of spare parts, raw material, as well as finished embedded pole. Main test equipments have X-ray device, partial discharging test instrument, vacuum intensity instrument, power frequency and lightning impulse test stand, circuit resistance test stand, high and low temperature test chamber, alternation moist heat test chamber, etc.
With twenty years’ professional research and develop experience, VACEM cumulates plenty design, manufacture, manage experience, brings up many excellent technical and manage talents; VACEM has become opened enterprise of complete product and technical service providing from single product providing. VACEM will sincerely provide satisfied embedded pole to customers.
