Distribution box is the data on the massive parameters, generally constitute a low-pressure forest according to electrical wiring, requiring switching equipment, measuring instruments, protective appliances and auxiliary equipment assembled in a closed or semi-enclosed metal cabinet or screen, constitute a low-voltage distribution box. Normal operation can be switched on or off by means of manual or automatic switching.
The distribution box has the characteristics of small volume, simple installation, special technical performance, fixed position, unique configuration, no restrictions on the site, more common application, stable operation and reliable, high space utilization, small footprint and environmental protection.
The distribution box has the characteristics of small volume, simple installation, special technical performance, fixed position, unique configuration, no restrictions on the site, more common application, stable operation and reliable, high space utilization, small footprint and environmental protection. Is the command of the power supply lines in a variety of components reasonable allocation of power control center, is reliable to accept the upper power supply, the correct feedback from the load power control links, but also access to the quality of the user's power supply or not the key. Improve the reliability of power distribution box operation, is a high-quality engineering objectives.
Common distribution box with two kinds of wood and metal, because the metal distribution box protection level to be higher, so the use of metal or more.
Classification by structure and use:
(1) fixed panel switchgear, often called switch board or distribution screen. It is a panel cover open switchgear, the front has a protective effect, the back and side can still touch the live part of the protection level is low, can only be used for power supply continuity and reliability requirements of the lower industrial and mining enterprises, for Power supply room for power supply.
(2) protective type (that is, closed) switchgear, refers to the installation surface, all other sides are closed up a low-voltage switchgear. This kind of cabinet switch, protection and monitoring and control of electrical components, are installed in a steel or insulating material made of closed shell, reliable wall or wall installation. There is no isolation between each circuit in the cabinet, or it can be isolated by a grounded metal plate or insulating plate. Normally the door is mechanically interlocked with the main switch operation. There is also a protective desktop switchgear (ie console), the panel is equipped with control, measurement, signal and other electrical appliances. The protective switchgear is mainly used as a power distribution device for the process site.
(3) drawer switchgear. This type of switchgear is made of steel plate closed shell, the inlet and outlet circuit electrical components are installed in the drawer can be drawn to form a class of power supply tasks to complete the functional unit. Between the functional unit and the bus or cable, with the grounding of the metal plate or plastic function board separated, the formation of bus, functional unit and cable three areas. There is also an isolation between each functional unit. Drawer switchgear has a higher reliability, security and interchangeability, is more advanced switchgear, switchgear mostly refers to the drawer switchgear. They are suitable for industrial and mining enterprises requiring high reliability of power supply, high-rise buildings, as a centralized control of the distribution center.
(4) power, lighting distribution control box. Mostly closed vertical installation. Due to the use of different occasions, the shell protection level is also different. They are mainly used as industrial and mining enterprises production site of the distribution device.
Distribution box is the electrical wiring requirements of the switch equipment, measuring instruments, protective appliances and auxiliary equipment assembled in a closed or semi-enclosed metal cabinet or screen, constitute a low-voltage distribution box. Normal operation can be switched on or off by means of manual or automatic switching. Malfunction or abnormal operation with the protection of electrical cut off the circuit or alarm. By measuring the instrument can display the various parameters in operation, but also for some electrical parameters to adjust the deviation from the normal working state to prompt or send a signal.