1300480290

1300480290 is an industrial-grade gas-insulated switchgear (GIS) developed by Siemens, with a rated voltage of 72.5 to 765 KV. The type is a single-pressure self-encapsulated GIS with SF6 insulation, which takes advantages of the novel electrical material, the gases properties, mechanical properties, vacuum switching, etc. to satisfy the extremely harsh working conditions of high voltage switchgear.

Application Field

1300480290 GIS has a variety of applications, from extra-high voltage and high voltage fields, to urban power grids, industrial and mining power supplies and other applications.

At extra-high voltage level, the switchgear is used in power supply main lines and the transformation units in power stations. At high voltage level, it is mainly used for power plant ring network connection, power station large capacity transformers and other electrical equipment. It is a great alternative to traditional air insulated switchgear (AIS) due to its higher reliability, lower construction cost, less noise and greater working life.

At urban power grids, it is often used in control cabinets for medium and large distribution power grids. It also can be used as back-up power supplies for data centers and some large factories to ensure power continuity and stability.

At industrial and mining power supplies, 1300480290 GIS usually works in control and protection systems of electrical equipment, such as power stations, substations, motor substations, pump substations, etc., requiring higher safety and reliability.

Working Principle

1300480290 GIS is composed of gas-insulated busbars and switching equipment with SF6 tank among others. The insulated busbars in GIS have high stability and flexibility, and the electrical insulation in the pipeline is mostly provided by SF6, so the GIS has great insulation performance and small size compared with traditional switchgear.

During the operation of the GIS, the working principle is mainly based on gas insulation, overvoltage limit, current limit and arcing protection.

Gas insulation refers to the high-voltage components, such as busbars, circuit breakers and disconnectors located in the cabinets, which are immersed in SF6 gas to achieve the insulation.

Overvoltage limit refers to the limitation of incoming and outgoing voltage in cabinet, realized by outgoing current limiters and lightning arresters on busbars, which can reduce the possibility of arc caused by voltage excess or lightning stroke.

Current limit means that when the current exceeds the set value, the gas-insulated switchgear will automatically disconnect the circuit with its switching equipment, and avoid arc caused by current overloading.

Arcing protection means that when the GIS switch contact points are tough or the contact distance is too small due to other conditions, arc will occur easily. To prevent such phenomenon, the switching equipment of the GIS features arc extinguishing, which will limit the arcing time to keep the scene safe.

In conclusion, 1300480290 GIS is a reliable and safe product with a variety of applications. It utilizes the excellent properties of gas insulation and the advantages of novel electrical materials, which make the switchgear more capable in harsh conditions.