The function and usage specifications of PE heat shrink tube insulated busbar for low-voltage cabinets and transformers

The connection between the low-voltage cabinet and the transformer should be selected according to capacity, and priority should be given to adapting to PE heat shrink tube insulated busbars to eliminate operational hazards caused by blind selection of hard connections.

High power transformers of 315kVA and above must be equipped with a Heat shrink tube polyolefin busbar on the low voltage side, which should be connected to the isolation switch on the distribution cabinet; Small capacity models can be connected directly with rubber sheathed flexible cables.

The Heat shrink tubing busbar is woven from multiple strands of copper wire and has inherent flexibility and stretchability, which can effectively isolate transformer electromagnetic vibration and block equipment resonance risks.

Paired with insulated soft connections, it can compensate for the thermal expansion and contraction deformation of the busbar, while buffering the short-circuit electric force to avoid impact damage to the transformer bushing and cabinet components. Compared to hard copper bar connections, PVC insulation busbars can optimize installation fault tolerance, solve on-site installation size deviation problems, and prevent contact surface loosening and heating.

Hard copper bars have high current carrying capacity and good heat dissipation, but have no vibration reduction effect. They can be used in conjunction with EV battery connectors to achieve flexible transition under high current conditions. Cable connections are used in confined space scenarios, but due to poor heat dissipation and limited cross-sectional area, their stability is far inferior to insulated soft connections that balance conductivity and protection.

It should be noted that high current busbars are not suitable for insulated flexible connections, and the length of Busbar sleeves insulation should not be too long to avoid affecting dynamic stability performance.

When selecting Busbar insulating tubing, the cross-section must meet both flow and mechanical strength requirements. The bare wire version should be reliably fixed, and the insulation version should ensure the integrity of the outer layer. The electrical contacts of insulated soft connections must be independently fixed, and it is strictly prohibited to rely on the transformer bushing for force. In outdoor scenarios, copper aluminum transition clamps should be used to prevent corrosion. It is necessary to provide external protection for the Busbar insulation sheet in daily life to avoid external damage and corrosive gas effects, and ensure the long-term stable operation of the distribution circuit.

If you have any technical questions regarding the specification matching of PE heat shrink tube insulated busbar, please feel free to communicate with us at any time. We can provide professional connection solution suggestions based on project capacity and installation environment, providing reliable support for the safe and stable operation of your power distribution system.