Residential commercial building power supply scheme
Scope of application
This solution is suitable for the power supply system of high-rise commercial and residential buildings and large office buildings.
2. System characteristics
As the proportion of bus ducts in the power supply system continues to increase, the requirements for the stability of the power supply of the bus ducts are getting higher and higher. For the busbar can supply power normally, there must be a complete monitoring system to monitor the operating status of the busbar, you do not have to worry about power supply system failure due to product quality, installation quality, and overload operation.
YLPF-2 intelligent monitoring and protection device for bus ducts is set at various parameter change points of the bus ducts to monitor the operation status of the bus ducts in real time, so that when the bus ducts are overloaded and short-circuited or other causes the temperature rise of the bus ducts to exceed the allowable range, they can be obtained in time and effectively Feedback and protection to ensure that the busway runs under normal loads. YLPF-2 busway intelligent monitoring and protection instrument has two functions: over temperature alarm and limit alarm. When the allowable temperature rise of the busway is exceeded during the operation of the system, a fault signal of the busway is issued. If the fault is not eliminated in a timely and effective manner, the controller will issue a dangerous signal again to cut off the total power of the system to ensure the safety of the power supply system.
Because the original busway can't be effectively protected after multiple capacity changes, many designers do not advocate the use of capacity change nodes. After the bus duct after the capacity change is added, the bus duct intelligent monitoring and protection instrument is added, and the capacity change problem is solved, which not only monitors the system operation status, but also saves the investment of the developer.
The horizontal part of the basement of this solution adopts a bus duct with an enclosure protection level up to IP66, which can effectively prevent the basement from being wet or the insulation of the bus duct from being lowered or even shorted due to fire fighting water and water leakage from the building. The vertical shaft section adopts the busway with IP65 enclosure protection, which can effectively reduce the occurrence of safety accidents, make the performance of the busway reliable, the system stable, and the operation safer.
Each layer of busway is provided with a plug-in interface, which is convenient for tapping and fast installation. The current level of the plug-in switch box can be selected according to the load requirements.
供电方案 Small high-rise double bus power supply scheme
Scope of application
This solution is suitable for small high-rise buildings. The busway is adjusted according to the actual needs of the current, the maximum current does not exceed 2000A.
2. System characteristics
The power supply main line is powered by two sections of bus duct trunk lines, and the two bus lines are standby for each other, which can ensure the normal power supply of the system.
This system's busway has two capacity changes. Each bus is equipped with three CDPF-2 busway intelligent monitoring and protection devices to monitor the operation of the busway to ensure that the system can be effectively protected due to overload or short circuit failure. It effectively solves the problem that it is impossible to monitor the operation status of the busway after the design is changed, and it cannot guarantee the safe operation of the system. By changing the capacity of the busway, it can not only ensure the power supply requirements of the system, but also reduce the cost of the busway.
Each layer of the busway is provided with plug-in interfaces, which is convenient for tapping and fast installation. The two sections of busbars are provided with plug-in interfaces, which are standby for each other, which can ensure that the system quickly restores power in the event of a failure.
The protection level of the enclosure is closely related to the stability of the busway system operation. The basement has a large number of pipelines for the fire protection system. In order to prevent water failure caused by the fire protection system, the protection level of the horizontal section of the casing is IP66. Because of the absence of fire protection system and other issues in the vertical shaft, the use of IP65 or IP54 busway can meet the actual needs.
The power supply system adopts a three-phase five-wire system. When a ground fault occurs in the system, it can quickly cut off the faulty circuit, protect the safety of people, equipment and lines, and improve the safety and reliability of the power supply system.