8VN1 blue GIS up to 145 kV
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8VN1 blue GIS up to 145 kV
Gas Insulated Switchgear
The Siemens 8D range of gas-insulated switchgear (GIS), for rated voltages from 72.5 kV up to 550 kV, is an extremely successful product concept.
Since its introduction back in 1968, Siemens has installed more than 34,500 bays worldwide in all climatic zones of the earth. More than 420,000 years of bay operation have been recorded since. The experience gained from over 45 years with SF6 technology together with continuous development based on the latest research findings, assures demand-oriented technology and the highest possible level of quality and cost-effectiveness. All requirements, which are nowadays usually specified for modern and advanced switchgear with respect to performance and reliabiliy, are met by Siemens-switchgear.
Cost-effectiveness, reliability and customer support are the distinctive features of Siemens gas-insulated switchgear for rated voltages from 72.5 kV up to 800 kV.
Their compact design allows their use in the most confined spaces, whether in the basement of a high-rise building, in a department store, in an industrial plant, on the first floor of an old historic building or in a mobile container. The modular structure of the switchgear permits flexible designs and problem-free extension.
Siemens' gas-insulated metal-encapsulated switchgear, a world leader in terms of:
In addition to gas-insulated switchgear, we also supply gas-insulated transmission lines (GIL) for transmitting high capacities of power over long distances.
With the intelligent control and monitoring solution SICAM, Siemens has created a new system of hard- and software components for the automation of switchgear in the field of electrical energy supply.
The flexible protection and control system offers a sequence of new functions:
Partial discharge monitoring increases the reliability of high-voltage switchgears. It enables any changes in the insulation to be detected at an early stage during normal operation so that appropriate remedial action can be taken. Maintenance measures can thus be controlled according to requirements, thereby reducing operating costs. The measurement data is displayed and archived in the control room. With the aid of an expert system the user can produce trend forecasts from long-term archive data so that potential faults can be eliminated at an early stage. Thanks to the built-in self-monitoring, the system can also be used in unmanned substations.
The PD monitoring system is a sophisticated measuring system, by means of which it is possible to monitor internal partial discharges in gas-insulated switchgear (GIS).
It comprises a number of components:
1 SF6 gas-insulated metal-enclosed switchgear
2 Coupler : act as UHF antennas, integrated in the GIS at a number of points
3 PD converter box (node) : Measuring device, connected to the PD couplers of the three phases of a point of installation
4 Optical-fibre bus system : Device for data transmission between the measuring points and the contral processor unit
5 Central processor unit : Monitoring of the data stream from up to 90 measuring points
6 Operator unit : PC for visualisation, archiving and automatic interpretation of the measured data
Modem : for remote operation and data telecommunication
Environmental awareness and increased resource efficiency require new technologies. This poses new challenges for the electrical industry and creates a demand for products that are environmental friendly.
Siemens has developed innovative solutions using alternative technologies that enable the F-Gas-free, easy and secure transmission of electrical power.
The new 8VN1 blue GIS up to 145 kV combines proven vacuum-switching technology with the advantages of clean air as insulation medium.
Based on more than 40 years of experience in producing medium-voltage vacuum interrupters and more than 5 million delivered units, Siemens introduced this proven technology to high-voltage power networks in 2010.
Siemens vacuum circuit breakers are designed in a well proven modular platform concept. Operating mechanism, control system, base frame, kinematic chain, and insulator designs are based on decades of manufacturing and operating experience.
The vacuum high-voltage circuit breaker offers the same benefits as the Siemens SF6 circuit breaker portfolio:
Vacuum interrupting technology enables the implementation of clean air as insulating medium in gas-insulated switchgear up to 145 kV. The clean air is compressed during the operation pressure into the single switchgear gas compartment, consisting of vacuum circuit breaker, disconnectors, and earthing switches.
|Rated voltage||up to 145 kV|
|Rated frequency||50 Hz|
|Rated nominal current||up to 3,150 A|
|Rated short-circuit breaking current||up to 40 kA/3 s|
|Dimensions (w, h, d)||1,000 x 3,200 x 5,500 mm|
|Driving mechanism of circuit breaker||Stored-energy spring|
|Rated supply voltage||110 V DC|
|Expected lifetime||> 50 years|
|Ambient temperature range||-50oC up to 55oC|
|Insulation medium||Clean air|
Other values on request.
Customer Support Center
Phone: +49 180 524 70-00 *
* Charges depending on provider; from the German fixed network € 0.14/min. and from the German mobile phone networks max. € 0.42/min.
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HV Vacuum Technology and Clean Air Insulation