Yahoo Web Search

  1. Free Shipping Available. Buy on eBay. Money Back Guarantee!

    • Daily Deals

      Lowest Prices on Top Items.

      Save Money with eBay Deals.

    • Sell on eBay

      168 Million Shoppers Want to Buy.

      Start Making Money Today.

  2. amazon.co.uk has been visited by 1M+ users in the past month

    Get deals on similar items in Industrial products on Amazon. Check out our selection & order now. Free UK delivery on eligible orders!

Search results

      • Just like all of our circuit breaker types, it provides a high operating energy which safely controls even the highest switching voltages. It can master the most difficult switching duties such as breaking short-circuit currents in the shortest possible time.
  1. People also ask

  2. Based on more than 40 years of experience in medium-voltage range and more than 6 million delivered vacuum interrupters, Siemens Energy has introduced this proven technology to high-voltage power networks in 2010. This game-changing technology offers several advantages: Zero CO2 or F-gas emissions.

  3. Siemens circuit-breakers for rated voltage levels from 72.5 kV up to 800 kV are equipped with self-compression interrupter units and stored-energy spring mechanisms.

    • Conclusion
    • Introduction
    • Elements of DTC switchgear assembly
    • Modular design
    • Standard assemblies
    • Customised assemblies
    • Development process
    • Future prospects
    • 2 Surge arresters
    • (HV)
    • 2 Circuit-Breaker platform, a modular design concept
    • Power tests for 50/60 Hz
    • Dielectric Tests
    • 1.6 Gas Mixtures – Handling and their Behaviour
    • Introduction
    • Advantages of DCBs
    • Future Prospects
    • 1 Introduction
    • 2.1 Puffer interrupter system
    • 2.2 Self-compression interrupter system
    • 1. Introduction
    • 3. Estimation of the voltage across the circuit-breaker during a three-pole auto-reclosing operation
    • 3.2 Prony Method
    • 7. Conclusion
    • High-Voltage Circuit-Breakers – Certified Quality
    • Which are the conditions to be fulfilled by the certified product?
    • Which is the period of validity of a product certificate?
    • What can the client benefit from the product certificate?
    • Conformity of type tests (test reports or test certificates)
    • Control Room
    • Summary
    • 1 Introduction
    • Feasibility Design study
    • 3 Requirements
    • Technical requirements:
    • Economical requirements:
    • 4 First draft of design
    • 5.1.2 Simulation of dielectric loads
    • 5.1.4 Simulation of gas flow
    • 5.1.6 Cost controlling
    • 6 Second draft of design
    • 8 Final design and type tests
    • 3. Calibration of measurement systems
    • 4. Factors influencing the measurement result
    • Corona discharges
    • Other influencing factors
    • Pressure and leakage testing of cast aluminium vessels for high-voltage circuit-breakers
    • Comprehensive service
    • Spare parts delivery
    • Comprehensive advice
    • Providing the right knowledge to ensure safety
    • We speak your language
    • All the key topics, all the time
    • The complete package
    • Training Programme

    When a new product is introduced into the market it shall from the start meet fully the customers’ expectations with regard to technology and reliability. This necessitates a high quality of the whole development process. Siemens’ engineers have at their disposal the most modern and progressive laboratory and test facilities to ensure this quality ...

    Due to increasing power demands in quickly developing areas and cost pressure, power transmission is a vital issue for the energy industry. Fundamental parts of energy transmission systems include high voltage substations containing the key elements circuit breakers, disconnectors, earthing switches, current transformers, etc. Standard design layou...

    Components of DTC are the Dead Tank circuit breaker (figure 3) and GIS components: disconnectors and earthing switches (figure 4). All assemblies are based on products from our existing product portfolio and have been recognized as well established products for many years. Dead tank circuit breakers include the self compression inter-rupter unit an...

    Generally, two classes of DTC setups are available. A number of standard assemblies to satisfy the requirements of common substation layouts are feasible. The configuration of customized DTCs is also possible because of the modular design of the com-ponents. All elements of high voltage substation are available for the DTC (figure 6). Standardized ...

    Standardization of assembly types yields reduced time in the concept phase of planning a new substation or extending or retrofitting an exiting substation. This can be realized with less effort than with single elements for AIS. The production process for DTC is comparable with that of a single device. Compact solutions also reduce on site erection...

    Due to its modular design and standardized connections of flanges and contacts the DTC’s versatility provides solutions for the various substation layouts. Nearly every switchgear layout can be achieved with this flexible concept. For example, switchgear applications with cable connection and voltage transformer (VT) can be realized (figure 9). Thi...

    Based on specifications, the product development process includes the following steps: design, calculation, simulation, realization and tests of prototypes, and type tests. The objective for the DTC design concept was to create a compact, reliable and flexible product platform. The whole design process was supported by the use of modern 3D design t...

    Economical switchgear layout, low engineering work for substa-tion layout and low commissioning costs for the DTC guarantees competitive investment costs. Reduced maintenance costs result-ing from high reliability ensures low operating costs. With the characteristics of compact design, high grade of stan-dardization, increased reliability and low m...

    The equipment used in electric power systems as transformers, instrument transformers or circuit breakers are exposed to over-voltages of different origin. Without countermeasures, occurrence of these overvoltages in the system can lead to failure of the equipment. In order to protect the equipment from overvoltages, surge arresters are used. The p...

    Condenser Composite Composite Insulator Insulator Tube

    Very often modern circuit-beakers for one and the same set of ratings are offered in various configurations corresponding to the respective application: e. g. live tank (LT) and dead tank (DT) circuit-breakers, circuit-breakers for gas-insulated (GIS) or highly integrated switchgear (HIS) or circuit-breakers for of so-called hybrid or compact switc...

    Terminal faults Short-line faults Capacitive current switching – line- and cable charging Capacitive current switching – back to back Short-time withstand and peak withstand current test Single-phase shunt reactor current Electrical endurance test Out-of-phase making test, with max. pre-arcing between the contacts of the closing resistor

    Rated power-frequency voltage test Rated lightning impulse withstand voltage test Lightning impulse voltage against power frequency voltage Rated switching impulse withstand voltage tests Switching impulse voltage against power-frequency voltage Chopped wave lightning impulse withstand voltage Dielectric tests on auxiliary and control circuits Elec...

    There are four different established processes for filling mixed-gas circuit-breakers: The gas mixture is obtained as a finished product from the manufacturer and is used to fill the circuit-breaker unit. The pressure of the gas mixture in the gas containers must be specified such that a partial liquefaction of the SF6 does not occur due to the tem...

    All energy providers are faced with increasing cost pressure. This is why they strive for higher reliability, reduced outage times and lower maintenance costs. If an existing substation is to be extended, the limited space at the site could be a problem – particularly in Northern countries where snow and ice on dis-connector contacts can lead to fa...

    The first advantage of a DCB in comparison to the classic arrange-ment of a circuit-breaker and separate disconnector is that there is no unprotected contact system of the disconnector. This means improved reliability with no problems arising as a result of dirt, snow and ice on the contact system. Furthermore, the discon-nector and circuit-breaker...

    It is likely in future that other voltage levels or other circuit-breaker types such as dead tanks or GIS breakers will also be designed as disconnecting circuit-breakers, or that additional components such as current transformers will be integrated because – for these types as well – DCBs also improve reliability, lower product and maintenance cos...

    Circuit breakers have a protective function in high-voltage transmission and distribution systems. Their high reliability and continuous availability are basic service requirements. Circuit breakers are used in all environmental conditions in countries throughout the world. The interrupter system and the operating mechanism are the main components ...

    The current path is formed by the terminal plates, two fixed tubes and spring-loaded contact fingers arranged in a ring in the moving contact tube. The fixed tubes are connected by the contact tube when the breaker is closed. The contact tube is rigidly coupled to a blast cylinder, the two forming the moving part of the interrupter chamber, togeth...

    The self compression interrupter system represents a further step in the development process. This system utilizes the high energy of the arc for building up the pressure of the SF 6 during opening for arc quenching. The conducting path of the inter-rupter unit consists of the contact carrier, the base and the moveable contact cylinder. In the clos...

    Energising and re-energising during an auto-reclosing operation of shunt compensated transmission lines cause switching over-voltages on the transmission lines. The use of circuit-breakers equipped with closing resistors is a conventional method to reduce these switching overvoltages. Another method to limit these switching overvoltages is the inst...

    During the dead-time of a three-pole auto-reclosing of a shunt compensated transmission line voltage oscillations appear after opening the circuit-breaker on the line side. The frequency of these oscillations during the dead-time of the auto-reclosing is defined by the resonant circuit of the individual phase and depends on the design of the transm...

    The algorithm based on the Prony Method [2] and used in the new controller superimposes the actual waveform across the open circuit-breaker by a sum of sinusoidal and exponential damping functions. The time window length used for calculation has likewise a constant length. The lowest recognisable frequency is independent of the evalua-tion window u...

    The advantage to calculate the exact future of the oscillation voltage during a three-pole auto-reclosing via the Prony Method is shown. Re-energising the compensated transmission line after the dead-time at an optimum time instants can be done. With the knowledge of the RDDS at voltage zero crossing a closing sequence can be given reducing the mut...

    Product Certificate – what is it and in which way can I benefit from it?

    Every condition concerning design, construction and testing given by the relevant standards has to be covered by the product. The ratings of the circuit-breaker have to be according to the standards and proven by successful type tests in independent and accredited STL laboratories strictly in accordance with the relevant standard and the applicable...

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

    ■ Courses on high-voltage switching technology products and high-voltage transfer products

  4. 1 day ago · The digitally-enabled 145 kV 3AV1 Blue circuit breakers installed at the Hesseln substation incorporate Sensgear TM, a cloud- based monitoring solution that provides data to improve grid operation, asset management and maintenance.

  5. The 3AP circuit breaker family is available for rated voltages from 72.5 kV up to 800 kV. 3AP1 circuit breakers up to 300 kV are equipped with one interrupter unit per pole and 3AP2 circuit breakers up to 550 kV include two...

  6. The DTC switchgear is available for rated voltages for 145 and 245 kV. The core components are adopted from our high voltage circuit breakers, disconnectors, and GIS product family: Self-compression arc-quenching interrupter unit of the AIS 3AP-circuit breaker. Stored-energy spring drive mechanism.

  7. Our high-voltage circuit breakers, regardless of type or voltage range, are designed in a well proven modular platform concept. This leads to a high diversity of types and high flexibility with regard to our customers’ requirements.

  1. People also search for