Conferences related to Varistors

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2021 IEEE Pulsed Power Conference (PPC)

The Pulsed Power Conference is held on a biannual basis and serves as the principal forum forthe exchange of information on pulsed power technology and engineering.


2020 IEEE Applied Power Electronics Conference and Exposition (APEC)

APEC focuses on the practical and applied aspects of the power electronics business. Not just a power designer’s conference, APEC has something of interest for anyone involved in power electronics including:- Equipment OEMs that use power supplies and converters in their equipment- Designers of power supplies, dc-dc converters, motor drives, uninterruptable power supplies, inverters and any other power electronic circuits, equipments and systems- Manufacturers and suppliers of components and assemblies used in power electronics- Manufacturing, quality and test engineers involved with power electronics equipment- Marketing, sales and anyone involved in the business of power electronic- Compliance engineers testing and qualifying power electronics equipment or equipment that uses power electronics


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE International Power Modulator and High Voltage Conference (IPMHVC)

This conference provides an exchange of technical topics in the fields of Solid State Modulators and Switches, Breakdown and Insulation, Compact Pulsed Power Systems, High Voltage Design, High Power Microwaves, Biological Applications, Analytical Methods and Modeling, and Accelerators.


2020 IEEE Power & Energy Society General Meeting (PESGM)

The Annual IEEE PES General Meeting will bring together over 2900 attendees for technical sessions, administrative sessions, super sessions, poster sessions, student programs, awards ceremonies, committee meetings, tutorials and more


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Periodicals related to Varistors

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Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Circuits and Systems I: Regular Papers, IEEE Transactions on

Part I will now contain regular papers focusing on all matters related to fundamental theory, applications, analog and digital signal processing. Part II will report on the latest significant results across all of these topic areas.


Dielectrics and Electrical Insulation, IEEE Transactions on

Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.


Electrical Insulation Magazine, IEEE

The magazine covers theory, analysis, design (computer-aided design), and practical implementation of circuits, and the application of circuit theoretic techniques to systems and to signal processing. Content is written for the spectrum of activities from basic scientific theory to industrial applications.


Electromagnetic Compatibility, IEEE Transactions on

EMC standards; measurement technology; undesired sources; cable/grounding; filters/shielding; equipment EMC; systems EMC; antennas and propagation; spectrum utilization; electromagnetic pulses; lightning; radiation hazards; and Walsh functions


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Most published Xplore authors for Varistors

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Xplore Articles related to Varistors

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IEEE Draft Guide for the Functional Specification of Fixed Transmission Series Capacitor Banks for Transmission System Applications

IEEE P1726/D12, June 2012, 2012

This Guide provides general guidelines toward the preparations of a functional specification of transmission fixed series capacitor banks (FSC) using overvoltage protection based on three technologies: * metal oxide varistors * metal oxide varistors with a forced triggered bypass gaps, and thyristor protected series capacitors. * thyristor protected series capacitor.This Guide does not apply comprehensively to Thyristor Controlled Series Capacitors


Transmission loss evaluation based on probabilistic power flow

IEEE Power Engineering Review, 1991

None


IEEE Approved Draft Standard for Test Methods and Performance Values of Metal-Oxide Varistor Surge Protective Components

IEEE PC62.33/D6, September 2016, 2016

Test methods and preferred values for metal-oxide varistor (MOV) surge protective components are covered in this standard and have the following main parameter ranges: packaging (leaded disc-type or surface mount), nominal varistor voltage (5 V to 1200 V), 8/20 surge current rating (10 A to 70 kA), and 8/20 clamping voltage (10 V to 3 kV). With appropriate component selection, ...


Application of ZnO varistor protection to capacitors of artificially commuted inverter in MTDC system

IEEE Power Engineering Review, 1991

None


IEEE Draft Guide for the Functional Specification of Fixed Transmission Series Capacitor Banks for Transmission System Applications

IEEE P1726/D14, February 2013, 2013

This Guide provides general guidelines toward the preparations of a functional specification of transmission fixed series capacitor banks (FSC) using overvoltage protection based on three technologies: * metal oxide varistors * metal oxide varistors with a forced triggered bypass gaps, and thyristor protected series capacitors. * thyristor protected series capacitor.This Guide does not apply comprehensively to Thyristor Controlled Series Capacitors


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Educational Resources on Varistors

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IEEE.tv Videos

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IEEE-USA E-Books

  • IEEE Draft Guide for the Functional Specification of Fixed Transmission Series Capacitor Banks for Transmission System Applications

    This Guide provides general guidelines toward the preparations of a functional specification of transmission fixed series capacitor banks (FSC) using overvoltage protection based on three technologies: * metal oxide varistors * metal oxide varistors with a forced triggered bypass gaps, and thyristor protected series capacitors. * thyristor protected series capacitor.This Guide does not apply comprehensively to Thyristor Controlled Series Capacitors

  • Transmission loss evaluation based on probabilistic power flow

    None

  • IEEE Approved Draft Standard for Test Methods and Performance Values of Metal-Oxide Varistor Surge Protective Components

    Test methods and preferred values for metal-oxide varistor (MOV) surge protective components are covered in this standard and have the following main parameter ranges: packaging (leaded disc-type or surface mount), nominal varistor voltage (5 V to 1200 V), 8/20 surge current rating (10 A to 70 kA), and 8/20 clamping voltage (10 V to 3 kV). With appropriate component selection, these components could be used for the overvoltage protection of power and signal systems having continuous ac voltages (2.5 V rms to 750 V rms), steady-state dc voltages (3.3 V to 1000 V), and peak signal feed voltages (3.5 V to 850 V). Information is given on manufacturer type testing used to determine environmental performance and rated values.

  • Application of ZnO varistor protection to capacitors of artificially commuted inverter in MTDC system

    None

  • IEEE Draft Guide for the Functional Specification of Fixed Transmission Series Capacitor Banks for Transmission System Applications

    This Guide provides general guidelines toward the preparations of a functional specification of transmission fixed series capacitor banks (FSC) using overvoltage protection based on three technologies: * metal oxide varistors * metal oxide varistors with a forced triggered bypass gaps, and thyristor protected series capacitors. * thyristor protected series capacitor.This Guide does not apply comprehensively to Thyristor Controlled Series Capacitors

  • Improvement of differential protection performance by external faults associated with a current transformer saturation

    Protective systems require a faithful reproduction of primary current on the Current Transformer (CT) secondary side. Saturation is a common problem in a steel core CT. Current transformer (CT) saturation leads to inaccurate current measurement and, therefore, may cause malfunction of protective relays and control devices that use currents as input signals. This paper have invested an efficient practical way, to avoid the effect of current transformer saturation on differential protection behavior, by adding metal oxide varistor (MOV) element to secondary of current transformer. Simulation study is done by using a program EMTP-ATP, that Differential protection remains stable when a fault occurs outside the protection zone associated with a saturation in a current transformer.

  • Dopant Effects to Pores in ZnO Varistors

    Pore is an intrinsic property of ZnO varistor. There are two different shapes of pores in ZnO varistor samples, one is sphere shape, and another is irregular polyhedron. Pores are caused by air particles wrapped in initial varistor compact and grains-surrounded spaces during the sintering. By analyzing the pore phenomena in two different systems of ZnO varistors, we observed the pore ratio decreases, pores with large size are formed, and the pores inside ZnO grains decreases with the increase of the amount of Al<sub>2</sub>O<sub>3</sub> additives, which are caused by the pinning effect of spinel formed by additives. The pores are possibly related to grain growth inhibition by dragging effects

  • Energy coordination to the terminal device with built-in varistor

    Effective lightning and overvoltage protection of the terminal device will be only achieved with proper selection of SPDs and the SPDs should inter energy coordinated with one another as well as the terminal device.

  • Thermal properties of whole-solid-insulated polymeric ZnO surge arrester

    A new type of 220 kV whole-solid-insulation polymeric ZnO surge arrester was developed, in which there is no air gap inside the arrester due to silicone rubber filling all the gaps between the ZnO varistor column and the polymeric housing. The electrical, and therefore thermal, overloading of the ZnO varistors could not cause a flashover inside. So the whole-solid-insulation polymeric surge arresters are of a safety-type design. The thermal dispersion capability of the newly developed polymeric arrester was measured and calculated by a special software based on the finite element method (FEM), which is better than that of a traditional ZnO arrester with a porcelain housing. The thermal stability of the developed 220 kV surge arrester was analyzed by FEM analysis software. The thermal balance diagram and the permitted energy absorption capability were discussed. The thermal stability property of the polymeric housing was measured. There are good agreement between the calculation results and the measurement ones.

  • A configuration concept of solid state switch for 2kV class DC circuit breaker

    In the HVDC grid hybrid circuit breakers are adopting stack of solid state SW (S/S) has the capability to break the fault current. The S/S of the circuit breaker comprise several semiconductors which are connected in series. The importance of large capacity of S/S has been shaping up in the HVDC circuit breaker. However, the rated capacity of power semiconductor at S/S is not enough to overcome the high voltage generated by blocking the fault current. In this reason, the serial connection of a number of semiconductor switches is necessary. However, when the semiconductor switches are connected by serially, unbalanced voltage could be appeared at each semiconductor switches due to the difference in semiconductor's turn-off time. Despite the same model of manufacturer, the turn off time could be different in accordance with the temperature. As a result, the S/S should be designed in order the unbalanced voltage not to exceed the breakdown voltage of the semiconductor by taking into account the turn-off time. To solve this problem, the configuration concept for balancing of breaking voltage between semiconductors is proposed in this paper. In addition, the experimental results of voltage distribution at 2kV class S/S are presented to verify the procedure.



Standards related to Varistors

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Standard Test Specifications for Varistor Surge-Protective Devices

This revision will apply to varistor components for surge protection: Transient overvoltages EFT ESD System voltages up to 1000 vac Applications up to 100mHz, tests of both polarities Statistical life evaluations Characteristics of construction evaluation: Monolithic multilayer surface mount Leaded



Jobs related to Varistors

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