Embedded Poles Type VCB

The core advantage of Kechang's Embedded Poles Type VCB is that it adopts advanced APG fixation technology to cast key components such as vacuum arc extinguishing chamber and conductive circuit with epoxy resin to form a fully enclosed insulating pole structure.This design completely isolates the erosion of external dust, moisture and dirt, and effectively avoids the deterioration of insulation performance caused by condensation. It is especially suitable for use in humid and dusty industrial plants or heavily polluted areas.The alicyclic epoxy resin used has high mechanical strength and low internal stress. It can withstand high temperatures of 180℃. It is not easy to crack during long-term operation. The partial discharge level is controlled below 10pC. It is a high-quality representative of APG solid insulated switchgear, which lays a solid foundation for the long-term stable operation of the equipment.

Short-circuit failure is a major hidden danger in the power distribution system, and the breaking ability of the circuit breaker directly determines the effectiveness of fault handling.Embedded Poles Type VCB is equipped with a high-performance vacuum arc extinguishing chamber. The contacts are made of special copper-chromium alloy materials, combined with the transverse magnetic field design, which can quickly and evenly extinguish the arc. The rated short-circuit breaking current can reach 40kA, and the closing time is only 20-50 milliseconds. The circuit can be quickly cut off before the fault current expands, limiting the scope of the accident.The winding adopts all-copper wire tightly wound process, and high-strength insulating materials are used between the layers and the turns. The mechanical strength is excellent, and it can withstand the impact of 31.5KA short-circuit current without damage.After strict type testing and verification, the electrical life of the equipment reaches 20,000 times and the mechanical life is 30,000 times, which can meet the needs of frequent operation scenarios and greatly reduce the risk of failure and shutdown.

In commercial buildings, hospitals, residential areas and other places, equipment operating noise and fire safety are mandatory compliance requirements.By optimizing the operating mechanism structure and installing shock absorbers, Keshun controls the operating noise of the equipment below 45dB, which conforms to IEC noise standards. Even if it is installed in a power distribution room close to an office area or a residential area, it will not cause significant interference. Interference.The whole machine adopts a completely oil-free design, and the core insulation components use F1-grade flame-retardant epoxy resin to eliminate the hidden dangers of oil leakage and fire from the source. It has passed IEC 62271-100 and UL fire certification.There is no SF6 and other greenhouse gas emissions, which not only meets the environmental protection requirements, but also is suitable for closed places such as basements and data centers with extremely high fire protection requirements. It is fully in line with the concept of safety and environmental protection of modern power distribution projects.