Copper bar insulation can prevent breakdown of the high-pressure system in the equipment room, increase the ground potential, and damage electronic components. So copper bar insulation is to be done, then what are the copper bar insulation processes?
First, the main process of copper insulation
1. Tin plating process
Tin plating on the surface of copper bar can prevent the oxidation of copper bar and improve the contact surface of copper bar. The bonding surface of tin and copper will form an alloy to enhance the adhesion of the copper bar coating. Tin has good electrical conductivity, high density and good cleanliness, which enhances the wear resistance of plated parts. This process has short operating cycle and mature technology, and is widely used in small electrical equipment and UPS room connection fields.
2. Spraying method
Spraying is to evenly coat the powder coating on the copper bar, and then form a smooth, smooth and firm protective layer on the copper bar after curing, so that the copper bar becomes a special process and special equipment of composite products.
Powder coating is a thermosetting coating made by a single synthetic resin or adding modifier, curing agent, pigment and filler into the resin, after hot melt mixing, the solid block is crushed into powder, sifted and made of thermosetting coating. The process can keep the primary color of copper row at low cost. It is suitable for customers who have low thickness requirements. It is mainly used in power distribution cabinets and large conductive devices.
3. Insulation process of heat shrink tube
Heat shrinkable tube is mainly made of polyethylene, which has excellent physical, chemical and electrical properties. Mainly used for electrical protection of connector insulation, mechanical protection of solder joint, rust prevention and corrosion prevention, reduce phase spacing. Since the heat shrink tube will shrink when heated, heat the heat shrink tube with a heat gun. The temperature of the heat gun is about 400 ° C to 600 ° C, and then coat the heat shrink tube with copper bars. The process is simple to operate, can be selected according to customer requirements of different performance of the heat shrink tube. Mainly used in electronics, communication, machinery, manufacturing industry of battery, distribution cabinet and other fields.
Two, the main application of copper bar
Copper conducts electricity better than aluminum, so it is widely used in electrical equipment and complete power distribution units. The A, B, C, N, PE phase busbar is generally copper bar, copper bar. In use, phase A copper bars are marked with phase color letters or painted with phase color paint. B phase copper bars are marked "yellow", B phase is green, and C phase is red.
Copper bar is mainly used for neutral line, high current phase line, ground line and other primary lines. And the connection of the high current primary component on the electric cabinet. For example, a row of electric cabinet is connected with the main bus line between cabinets. From the main bus line to the isolation switch and circuit breaker of each cabinet, the branch bus is electrically. Copper bars have bare copper bars and tinned copper bars. In electrical cabinets, copper rows are usually tinned and embossed, or electrically conductive adhesive is added. The spare parts are protected by heating and shrinkage casing and partially coated with insulation.
According to the above introduction, the copper bar insulation process mainly includes tin plating process, spraying process, heat shrink tube insulation process and so on. It is mainly used in the connection of primary circuits and primary components of electrical equipment and complete power distribution devices.
