The principle of the fuse is to use the current to flow through the conductor to heat the conductor, and the conductor is ablated after reaching the melting point of the conductor, so the electrical appliances and circuits used for circuit maintenance are not burned out. It is an accumulation of heat, so it is also able to complete overload maintenance. Once...

The connection of voltage distribution devices at all levels in the substation, as well as the connection of electrical equipment such as transformers and corresponding distribution devices, mostly use bare wires or stranded wires of rectangular or circular cross-section, which are collectively referred to as busbars. The role of the bus bar is to collect, distribute and transmit electrical energy. Because the busbar ...

generatrix In the field of electricity, the busbar can also be called the busbar, busbar, etc., most of which refer to the busbar or power supply trunk in the high and low voltage cabinet, which is used to connect multiple electrical lines. The system will install various interface cards through the bus, and transmit various data to the devices connected to the interface cards.

The shared DC bus system is the future development direction in the application of multi-drive motors, which makes reasonable use of the regenerative energy of the system together with better dynamic and static functions and speed regulation accuracy, eliminating a lot of braking units and braking resistors, and the energy efficiency ratio of the system has been greatly improved.

The function of the tension spring bracket in the bus system is to fix the orientation and stability of the bus duct, and it must be very careful during construction, otherwise the bus duct will fall, which will cause a very serious accident. The device step of the tension spring support in the bus system ...

At the time of the cable tray installation, the wiring is not very convenient. This phenomenon can be avoided by using busway. The 5 advantages of using busway in the cable tray device are as follows: 1. Convenient connection of bus duct: the so-called plugging ...

According to the requirements of the relevant specifications, the placement method of the three-phase busbar can be roughly divided into two kinds according to the model of the low-voltage distribution cabinet and the different manufacturers: the horizontal placement and the placement of the down wire.

When multiple inverters are used in the common DC bus, because the DC bus between the inverters is connected together, the bus energy between the inverter in the power generation operation state and the inverter in the electric operation state can flow to each other, so that the voltage of the common bus remains relatively stable, and the body ...

Bus load guessing is a kind of power system load guessing, and the bus system load can be defined as the sum of the terminal load supplied by the main transformer of the substation to a relatively small power supply area, which is the refinement of the system load. Bus load guessing generally only carries out short-term load guessing, and the result is ...

1. Requirements for civil engineering before installation 1) The foundation, structure, reserved holes and embedded parts all meet the design requirements of electrical equipment. 2) After the construction of the roof and floor slab is completed, there shall be no leakage. 3) After the indoor ground construction is completed, mark the ground leveling line on the well wall. ...

1. Whether the maintenance scale of the bus differential is confirmed, and whether the maintenance target is unchanged Generally, differential maintenance includes bus differential maintenance, transformer differential maintenance, generator differential maintenance and line differential maintenance. The basic principle of completing differential maintenance is the same, that is, each side or each ...

According to the different uses of the bus duct, the bus groove is generally composed of the start bus slot, the straight bus slot (without partition jacks and jacks), the L-shaped straight (horizontal) curve bus, the Z-shaped straight (horizontal) offset bus, the T-shaped straight (horizontal) tee bus, the X-shaped straight (horizontal) four-way bus, the transformer...

There are three types of maintenance commonly used in medium and low voltage bus systems: (1) Transformer backup overcurrent maintenance (typical maintenance action time is 1.2s - 1.4s) (2) Transformer voltage with feeder quick-break maintenance locking ...

The arc of the switchgear cable spacing causes the pressure and temperature in the switchgear to increase rapidly, and if not removed in time, it will cause serious harm in the following aspects: (1) The arc temperature is 2 times the appropriate solar temperature, and the large ...

Before the closed busway device, it should be ensured that the electrical shaft, the transformer and distribution room, the decoration project of the place through which the busway passes, and the heating and ventilation project are all completed to ensure that the closed busway is not polluted. The reserved holes and embedded parts of the floor and wall should be embedded and reserved according to the position required by the design. ...

The grounding of the DC system should include two situations: the one-point grounding of the DC system and the two-point grounding of the DC system. In the DC system, the positive and negative poles of DC are insulated from the ground, and there is no grounding current when generating a ground current when one pole is grounded.

1. Rapid device Today, busway adapters cannot be flipped at the time of installation, and the two busway sections are not out of phase when flipped when connected. 2. High protection level The coupling box has a protective function, ...

1. The standard scale of the bus duct This specification regulates the terminology, skill requirements and test methods of the insulated bus trunk system (bus duct) and its plug-in feed box (hereinafter referred to as the feed box). This specification specification applies to additional voltage AC to 660V...

One of the characteristics of the Wiener low-voltage switchgear is the multi-functional busbar system. The bus bar is a conductor that connects large electrical equipment such as generators and transformers with various electrical devices. The role of the bus bar is to transmit electric energy with the, and the bus bar is the main equipment constituting the electrical wiring. ...

(1) Single bus wiring. Single bus wiring has the advantages of simple and clear, less equipment, less investment, convenient operation and expansion, but its reliability and activity are poor. When the bus or bus divider is faulty or overhauled, it is necessary to disconnect all power to the bus. ...

When it comes to cable tray installation, wiring is not very convenient. This phenomenon can be avoided by using busway. The 5 advantages of using busway in the cable tray device are as follows: 1. Convenient connection of bus duct: the so-called plug-in bus duct, fireproof bridge is the way it uses plugged in.