GGM-1200A Insulated High Voltage Common Box Busway

GGM-1200A Insulated High Voltage Common Box BuswayThe mechanical processing of bus ducts requires high precision, strong interchangeability, and easy assembly and disassembly. During installation, it is required to be able to be easily inserted. The connection head of the bus duct is crucial. The connection head is required to have high machining accuracy and good interchangeability, and must meet three requirements: ① low contact resistance; ② Damage caused by automatic thermal stress; ③ Easy to assemble and disassemble. The basic structure is as follows: if the contact surface is very smooth without pressure marks when in single-sided contact, a single screw is used to connect the large capacity bus duct. Parallel double screws or parallel 3 screws are used. Both ends of the high-voltage common box bus duct are locked with butterfly washers, and the tightening torque is specified. The contact pressure should be kept constant to automatically generate thermal stress.

Installation sequence:

1) The important thing is to choose the direction of the wiring

2) If the fixed bracket is not fixed, it may cause danger in the later stage of the project

3) Tighten the groove with four bolts

4) It is necessary to clean the busbar joints and the interior of the trunking

5) Then add bus joint plates and insulation pads alternately

6) Single head bolt inserted into insulation sleeve

7) After alignment, insert the bolt into the pre arranged hole of the busbar

8) Protection of the shell: Tighten both ends and install half of the upper and lower cover plates

9) Fix the busbar on the bracket

Installation rules for busbar trunking

1. Loading, unloading, and storage of bus ducts

When the bus duct is installed vertically, the vertical distance between the joint and the ground should not be less than 0.6m; when the bus duct is installed vertically between floors, the length of a single straight line of the bus duct should not be greater than 3.6m; for floors with a single layer exceeding 3.6m, the wholesale of high-voltage common box bus ducts should be made in two or more sections, and intermediate fixed brackets should be installed between floors. The connection point of the bus duct should not be at the location where it passes through the floor slab. When installing the bus duct through the floor slab hole, there should be no sewage or debris entering the interior of the bus duct. The busbar slot plug-in feeding hole (branching interface) should be located in a reliable and easy to install and maintain position. When installing the bus duct vertically, the spring bracket should be installed on the bus duct first, and then the bus duct and spring bracket should be fixed on the channel steel fixing bracket, and the spring nut of the bracket should be locked; After installing layers 4 to 5, loosen the nuts layer by layer from top to bottom to allow the weight of the bus duct to naturally bear on the support spring. After the bus duct connection is tightened, its bending degree shall not exceed 1 degree The distance between two vertically adjacent bus ducts should not be less than 0.1m. Expansion joints should be installed when the straight length of the bus duct exceeds 60m.

2. Installation direction of bus duct

When each batch of bus ducts is shipped, a routing diagram and a detailed routing list are provided. All bus ducts have corresponding branch lines, section numbers, and are installed in sequence according to their numbers.

3. Inspection before installation of bus duct

Check if the bus duct casing is complete and undamaged, inspect if the bolts on the bus duct casing are loose, and ensure that the bolt connections are reliable; Check if the bus duct socket is closed and locked;

4. Connection of bus duct

The busbar trunking bracket must be installed firmly and placed correctly according to the section number, phase sequence, number, direction, and installation mark. When connecting sections, adjacent sections of busbar trunking should be aligned. After connection, the busbar trunking conductor and shell should not be subjected to mechanical stress.

Connection and installation steps: First, check if there are any bumps or damages on the conductor connection surface and connector at one end of the bus duct. After confirming that there are no problems, start connecting the two bus ducts to the connector bus. The bus duct conductor should be inserted into the connector and locked with a torque wrench after ensuring it is in place; The price of docking type bus duct and high-voltage common box bus duct should align the end parts of the two bus conductors that need to be connected parallel to each other, and then insert the copper connection piece and insulation partition into the phase gap of the bus end (clamp one copper connection piece on each side of the bus, and place one insulation partition between the copper connection pieces). After confirming that there are no problems, insert the insulation bolts and pay attention to whether the connection holes of the copper connection piece, bus end, and insulation partition are aligned, whether the copper connection piece and insulation partition are in place, and tighten the bolts.

GGM-1200A Insulated High Voltage Common Box Busway

Scope of Application

The enclosed busbar trunking is suitable for power supply systems with AC frequency of 50-60Hz, voltage of 3.6KV, and rated current of 400-6300A. The high-voltage common box enclosed bus duct is suitable for electrical connection between high-voltage transformers and high-voltage substations, as well as electrical connection between generator sets and impulse transformers.

Easy to install, capable of adjusting two degrees of freedom in both horizontal and vertical directions. Not only can it meet the expansion and contraction requirements caused by different temperature drops and thermal expansion and contraction, but it can also compensate for errors caused by foundation settlement, solving the problems of poor protection level, inconvenient installation, and unreliable operation of traditional skateboard type expansion devices. In order to address the impact of vibration generated during the operation of transformers, generators, and distribution cabinets on enclosed busbars, soft connections or copper braided tapes are used outside their connection to the enclosed busbars, and rubber pads are added between the shells to reduce vibration; For the enclosed busbar trunking body, shock absorbers are installed in the system to provide elastic support for the ceramic flat and conductive bars, effectively avoiding mechanical vibrations and seismic waves caused by the shell from damaging the enclosed busbar. The heat transfer of enclosed bus ducts mainly relies on thermal radiation. In order to make good use of thermal radiation, light gray paint is sprayed on the outer surface of the enclosed bus to reduce the absorption of visible light; Spray black paint on the inner surface of the enclosed busbar to enhance the radiation of internal heat to the shell and prevent corona. In order to avoid accidental condensation caused by temperature changes outdoors and indoors in winter, wall sleeves are installed at the penetration points to enclose the outdoor and indoor busbars;When installed vertically, the flange is inside, and when installed horizontally, the flange is outside.

The purpose of high-voltage common box bus duct is to provide electrical connections between transformers and high-voltage distribution panels, power supply systems in large factories and mines, large substations, and self owned power plants of large enterprises, as well as electrical connections between generators and step-up transformers.

It replaces the traditional bare wire routing method. In addition to being safe, beautiful, and reliable, it also greatly reduces the number of power outages and maintenance due to the enclosed shell of the high-voltage bus duct. When transporting large currents, it can be used with double splicing

Adopting a high-strength and high-performance DMC insulation support block clamping structure, it has good load performance and dynamic thermal stability; Strong overload capacity and low temperature rise. The high-voltage bus duct adopts enclosed packaging, which can greatly reduce the frequency of power outage maintenance. When transmitting large currents, faults caused by unbalanced current distribution caused by double or triple splicing high-voltage cables can be used.

Main control system of the equipment:

1. Ignition control system;

2. Collection tower and smoke device;

3. Gas flow control system;

4. Smoke concentration measurement system; Optional configuration

5. Temperature measurement control system;

6. Delayed combustion control;