Customized processing of 1200A fire-resistant bus duct

Customized processing of 1200A fire-resistant bus duct

Terms of Use

Surrounding environmental temperature-5℃/+40℃, and24hThe average internal temperature is not greater than35℃.

Relative humidity of air+40℃Time not exceeding50%，+20℃Time not exceeding90%.

The altitude shall not exceed2000mQuality assurance of fire-resistant busbar trunking

Pollution level according toGB7251.1-1997Low voltage switchgear and control equipment - Part1Selected provisions of 'Part'3Grade.

The fire-resistant busbar trunking consists of an outer shell coated with fire-resistant paint, busbars wrapped with fire-resistant mica tape, and brackets made of fire-resistant insulation materials. There are multiple grooves on the bracket, in which busbars are embedded and fixed. There is a bus duct connection box at one end of the bus duct, and a bus tap box inside the bus duct. Fire resistant busbar trunking has excellent insulation performance, which can be used continuously in normal environments or for more than one hour in fire environments. It can be used in high-rise buildings and important facilities to replace fire-resistant cables for power transmission and distribution.

Fire resistant bus duct suitable for rated voltage690VBelow, rated working current250-5000AFrequency50-60HzThe power transmission and distribution system. After years of testing and industrial operation, its electrical performance, fire resistance, and metal structure have all reached*Level. When the busbar system is operated at rated current for a long time, its temperature rise shall not exceed: Connection terminals:60KMetal casing:30KSurface of insulation components inside the groove:40K.

The busbar trunking uses conductive and insulating materials, and the busbar trunking system uses tin plated or silver plated copper bars and aluminum bars as conductive materials. The outer surface of the conductive bars has good anti-corrosion protection. Conductive row adoptsBGrade（130℃）The thermoformed polyester film insulation material is wrapped as a whole,****The insulation strength and impact resistance of the busbar have been improved. The busbar adopts environmentally friendly insulation materials and meets the requirements of the European UnionSGSSix physical property tests andULauthentication. Mainly used in modern workshops, automobile manufacturing plants, industrial electric furnaces in the motor manufacturing industry, factories, and high-rise buildings, etc. During the use of bus ducts, maintenance work must be done well, which includes a lot of content

The busbar trunking should align the ends of the two busbar conductors that need to be connected in parallel with each other, and use a docking type busbar trunking. Insert the copper connecting piece and insulation partition into the end of the busbar, and clamp one copper connecting piece on each side of the busbar for each phase of the neutral gear. Place an insulation partition between the copper connecting pieces. After confirming that there are no issues, insert the insulation bolt and pay attention to whether the connection holes of the copper connecting piece, busbar end, and insulation partition are aligned, whether the copper connecting piece and insulation partition are in place, and tighten the bolt. The plug-in box cannot be unplugged without disconnecting the switch. average2Connections can be made on the straight busbar trunking3Due to the low current of the plug-in box, the plug-in box is directly connected to the bus duct through connectors with corresponding interlocking. For external output, cables are usually used to confirm that there are no issues. Then, connect the two bus ducts to the connector bus and check the conductor connection surface at one end of the bus duct and whether the connector is damaged or bumped. The bus duct conductor should be inserted into the connector and secured in place using a torque wrench.

Attention should be paid to the welding of bus ducts

For the use of bus ducts, everyone already knows a lot about bus ducts, so I won't go into too much detail. For the production workshop bus ducts, what I want to introduce to you below is about the welding of bus ducts.

1Copper bar welding. Let's compare the current carrying capacity of the welded busbar with the original busbar of the same cross-sectionlOur abilities are much smaller, so we need to45°Slant welding busbar can increase the welding surface and improve its current carrying capacity by doing solAbility.

2Welding of cover plate and side plate. Usually, the side panels are more cost-effective to weld on the outside, while the cover panels are welded on the inside. At the same time, after the cover and side panels are welded and formed, they need to be polished smooth.

3Whether it's copper bars or shells. We need to use fixtures to fix the welded object during welding, so as to ensure the correctness of the welding angle.

Customized processing of 1200A fire-resistant bus duct

Fire resistant bus ductWhen installing the busbar horizontally, the fire-resistant busbar trunking of commercial housing can be installed and laid by lifting or supporting the busbar trunking with nails along the wall, and the distance between the busbar trunking and the side wall surface should be ensured, so that the plug can be smoothly inserted into the busbar trunking. The protection level of the shell has reachedIP68It can be immersed in water for a long time and can resist the violent spraying of fire water;
Adopt overall vacuum casting to ensure that there are no gaps in the bus duct;
Using insulation materials, toxic gases will not be emitted even in flames, ensuring the safety of personnel;
Using special thermal conductive materials, it has good heat dissipation function in normal working environment.

This product has electrical performance equivalent to other types of bus ducts under normal conditions. Please refer to the ordering referenceFHTechnical parameters and current rating of fire-resistant busbar trunking. The installation structure is the same as other bus ducts, please refer to the selection.

Bus system safety:

The metal enclosed shell of the bus duct can protect the bus from mechanical or animal damage. The high-strength enclosed bus duct is safe to install using plug-in units in the distribution system. The fire-resistant bus duct shell can be used as a whole for grounding, which is very reliable. The price of fire-resistant bus duct is high, while the cable isPVCThe shell is susceptible to mechanical and animal damage, and when installing cables****Cut off the power first. If there is an error, it will be very dangerous. Dense fire-resistant bus ducts, especially cables, need to be grounded on site, and unreliable grounding increases the risk.

Bus duct connectors refer to differential circuits composed of all branch currents except for bus tie switches and section switches. The small difference of a certain section of busbar refers to the differential circuit composed of all the branches connected to the busbar, including the busbar and section switches, and the current. The large difference ratio differential of the busbar is used to distinguish between defects inside and outside the busbar area, while the small difference ratio differential is used for selecting defective busbars.

The fire-resistant bus duct consists of an outer shell coated with fire-resistant paint, a bus wrapped with fire-resistant mica tape, and a bracket made of fire-resistant insulation material. There are multiple grooves on the bracket, in which busbars are embedded and fixed. There is a bus duct connection box at one end of the bus duct, and a bus tap box inside the bus duct. Fire resistant busbar trunking has excellent insulation performance, which can be used continuously in normal environments or for more than one hour in fire environments. It can be used in high-rise buildings and important facilities to replace fire-resistant cables for power transmission and distribution.

The cross-sectional area of the bus duct is small, saving space, while cables require a large installation space. Bus ducts can be controlled at a location close to the equipment, while cables****Control in the distribution room. The bus duct is equipped with standard installation brackets and does not require any other support. The bus duct brand and cable****Lay using separate cable trays or pipelines. The lifespan of the bus duct can reach50The cable has a short lifespan and cannot be reused. The sub interface of the bus duct can add sub circuits, while the cable****Lay in the distribution room. The insurance cost for installing bus ducts is relatively low, while the cost for cables is relatively high. Bus duct, fire-resistant bus duct, is a closed metal device composed of copper and aluminum bus columns, used to distribute large power to various components of a distributed system. In indoor low-voltage power transmission mainline projects, wires and cables have been increasingly replaced.