A composite frame low-voltage bus duct and preparation method thereof

Abstract

The invention discloses a composite frame type low-voltage bus slot. The composite frame type low-voltage bus slot comprises a plurality of bus straight-line segment brackets, a joint segment is connected between every two bus straight-line segment brackets; the invention further discloses a manufacturing method of the composite frame type low-voltage bus slot, and mainly comprises the following steps: selecting material, pre-manufacturing the straight-line segment bracket, filling potting material, manufacturing the joint segment, and filling the potting material; the application performance of the low-voltage bus slot is improved, the conductor and the insulating sleeve are fixed through the tenacity material; the expansion defect between the conductor and the insulating material is avoided when the temperature of the conductor is changed; the low-voltage bus slot is low in internal bubble content, small in bubble size, low in dielectric loss of insulating material, high in voltage resistance, and low in ageing life; the insulating material is high in density, good in tensile resistance, bending resistance and torsion resistance; the insulating material can adopt the heating curing process, the curing period is shortened to tens of minutes or several hours, and the insulating material can be extensively applied to the industrial and mining power distribution industry.

Description

technical field [0001] The invention belongs to the technical field of low-voltage power distribution equipment, and in particular relates to a composite frame-type low-voltage bus duct, and also relates to a preparation method of the composite frame-type low-voltage bus duct. Background technique [0002] Due to its compact structure and large carrying capacity, low-voltage busway is widely used in industrial and mining power distribution industries. According to the type of insulating medium, low-voltage busway can be divided into air-insulated type and resin-insulated type. Among them, the resin-insulated low-voltage busway is especially suitable for outdoor low-voltage power distribution and connection trunk lines due to its remarkable characteristics such as waterproof, anti-corrosion, aging resistance and high strength. [0003] The existing low-voltage resin insulated busbars mainly adopt resin casting process. During the production of the straight section of the bus...

AI Technical Summary

Problems solved by technology

Since the casting production process is carried out under atmospheric pressure, air bubbles and structural defects are easily formed inside the insulating material, resulting in low mechanical strength and poor pressure resistance of the bus duct

The expansion characteristics of the resin body and copper or aluminum conductors are quite different, and it is easy to form interface defects due to temperature changes of the conductors. Moreover, the process of curing the resin at room temperature takes a long time, and the curing process requires high temperature and humidity in the production environment.

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