What are the seven main features of a closed busway structure?
What are the seven characteristics of closed busway structure? In general, it mainly has the following characteristics:
1. Reduce grounding faults, avoid interphase short circuits, and the off-phase closed busbar can eliminate external moisture dust and grounding faults caused by external objects due to shell protection.
2. Eliminate the heating generation of the steel structure, and the shell shielding of the out-of-phase closed bus can fundamentally solve the problem of induced heat generation of the steel structure.
3. Reduce the short circuit between phases, the electric force is greatly reduced by the short circuit electric force of the interphase conductor due to the double shielding effect of eddy current and circulation on the shell.
4. To improve the safety and reliability of operation, the basin insulator is pressed by SMC, and the busbar is closed to prevent insulator condensation At the same time, hydrogen measurement and temperature measurement devices are used, and the measurement signal can be displayed on the spot or transmitted to the DCS system to improve the safety and reliability of operation, and the busbar is closed to create conditions for the use of ventilation and cooling.
5. The closed busbar is produced by the factory as a complete set of production quality, operation and maintenance, small workload, simple construction and installation, and does not need to set up a mesh fence, which simplifies the requirements for civil engineering.
6. The shell includes a branch circuit in the same phase, adopts an electrical full connection type, and adopts multi-point grounding to make the shell, which is basically in an equipotential grounding mode, which greatly simplifies and eliminates the risk of personal electric shock.
7. The closed busway has corrosion resistance and good heat dissipation, and can be used as a 100% grounding wire.
Compared with dense busways, it has the advantages of large conveying capacity, strong overload capacity, flexible line expansion, beautiful appearance, compact structure and convenient installation and maintenance. The structure of the closed busway can effectively balance the impedance of each phase, thereby reducing the voltage loss of the busway system, so that the busbar has a high conductor payload. Quick connector connector can ensure fast bus installation; The high-strength shear bolt reduces the user's requirements for joint assembly; The connector housing is equipped with a prominent warning mark and a temperature rise warning mark for user safety.
Closed busways can be divided into: air-type busways, high-strength busways, high-strength dense busways, and fire-resistant combined closed busways. It is mainly used for power transmission and distribution, suitable for three-phase four-wire or three-phase five-wire power supply and distribution lines with rated working voltage of 660V, rated working current of 250~2500A, frequency of 50Hz, it has a series of characteristics such as compact structure, high insulation strength, large transmission current, good interchangeable performance, stable electrical performance, easy installation and maintenance, and long life time. It is widely used in power supply and distribution systems such as industrial and mining enterprises, high-rise buildings and public facilities.
