Protection of medium and low voltage busbars – Wienal

The so-called "section" of the bus bar is that the data that constitutes the bus are directly connected, and there is no circuit breaker or blocking switch in the center. A circuit breaker or barrier switch in the center is called a "segment". Different voltage levels cannot be connected in the same section. No...

According to the requirements of the relevant specifications, the placement 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: horizontal placement and placement of the down wire, according to the order of placement.

1. Three-phase AC power supply inlet The power input of each inverter is connected in parallel on the same AC bus, and the power supply phase of the input of each inverter is consistent. In Figure 3, the circuit breaker QF is the incoming protection device for each inverter. LR is an incoming reactor, when multiple inverters are in the same ...

The bus bar is an intermediate link in the voltage distribution device at all levels, and its role is to gather, distribute and transmit electric energy. It is mainly used for the connection of the electrical main circuit between the power plant generator outlet line and the main transformer, the plant transformer and the distribution box, also known as the busbar. ...

(1) Single bus. Single busbar, single bus segment, single bus plus bypass and single bus segment plus bypass. (2) Tandem bus. Double busbar, double bus segment, double bus plus bypass and double bus plus bypass. (3) Three busbars. Triple bus, triple bus section, triple bus section ...

The Wiener comb busbars and connection terminals are available with QUADRON®CrossLinkBreaker in size 000/00 Recommended installation: Wire entry at the lower end of the NH-fuse disconnector through the comb busbar. In the installation position and ...

(1) Simple maintenance and repair operations Equipment is often added or removed or changed in the computer room, and cables are removed or added at the same time, and the grid bridge with open structure can observe the cables to the maximum extent, so it is easy to distinguish the cables that need to be replaced, so that maintenance and repair ...

1. In the 60mm bus system, the square fuse type blocking switch can be directly hooked. 2. The 60mm bus system refers to the three-wire or four-wire bus spacing of 60mm. 3. Strip NH-fuse type load barrier switch with scale 00 ...

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.

1. Busway horizontal device, the interval between the two brackets is ≯2500mm, and the interval between straight devices is ≯3600mm; 2. When the device bracket is straight, it should be drilled with the channel side plate and fastened with M6-M8 bolts. 3. In the process of installation construction, priority should be given to the power supply system, ...

1. For the charging of the spare bus, when there is a bus tie circuit breaker, the bus tie circuit breaker should be used to charge the spare bus. At this moment, the maintenance device of the bus tie circuit breaker should be fully invested, and the relevant maintenance value and time limit should be changed to a smaller one, so as to facilitate the bus tie circuit breaker when there is a problem, the bus tie circuit breaker can quickly trip, cut ...

One of the characteristics of 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 equipment. The role of the bus is to, sub-...

According to Wiener electrical engineer, the bus system is a process-assisted component, the main effect is to hook the switch on the adapter, and the adapter is then hooked on the copper bar, so that the full protection of the copper bar can be completed, and the safety factor is improved; The upper port of the switch can be connected without ...

Intelligent, energy-saving, dense busway, it is capable of generating outward electromagnetic wave radiation. It can be said that the line loss in the process of power transmission is greatly reduced, which can save energy and reduce electromagnetic radiation pollution. In addition, the product is also specially equipped with a radiator, which increases the heat dissipation area of the conductive bar and accelerates the ...

Compared with other air-type busway, Wiener closed busway has many similarities in appearance, and its difference lies mainly in the shell, the structure of the closed busway is more distinctive, which also makes its use have certain advantages. As long as it is in contrast ...

Plug-in fuse: It is commonly used at the end of the line at the voltage level of 380V and below, as a short-circuit maintenance for distribution branch lines or electrical equipment. Spiral fuse: The upper end of the melt is covered with a fuse indicator, once the melt is melted...

1. The cable in and out of the bridge is not piping 2. The orientation of the bridge grounding and crossing is incorrect, and the special grounding line of the spray or painted bridge device is not equipped with a special disc gasket 3. The fireproof board of the electric well is not fixed, and the fireproof plugging is not perfect 4. The bridge is opened at will, and no standard accessories are used.

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 ...

1. It has a modern beauty; 2. Small dimensions; 3. Strong and light weight, simple operation; 4. The connection is very simple (just like connecting water pipes, connecting sections through tees, elbows and other joints to make them into a system; ...

The judgment of PT three-phase voltage loss (symmetrical disconnection) is fundamentally the same for each manufacturer, and it is judged according to the three-phase no voltage and the current of the line. The same is true for PT asymmetrical wire breakage. After analyzing the characteristics of PT wire breaking, the specific judgment of PT asymmetric wire breaking of different manufacturers ...