High-voltage substations | High-voltage – Power transmission

Substations with air-insulated switchgear. Siemens high-voltage substations with air-insulated switchgear (AIS) are the cost-efficient choice for rated voltages of up to 800 kV. They are renowned for highest reliability, economical operation, and low maintenance requirements.Get price

Innovative high-voltage switchgear key to subsea compression

Power EquipmentSubsea Switchgear Electrical System DesignElectromagnetic CompatibilityAuxiliary Power SuppliesProtection SystemInterface EngineeringThermal EngineeringMechanical DesignFabrication EngineeringAvailability StudiesThe pilot subsea gas compressor motor is rated 12.5 MW and is used together with a 400 kW pump. The long tieback makes subsea power distribution necessary. The equipment in the CBM is 36 kV class and the subsea system voltage is 22 kV. Auxiliary power is provided via a transformer and is backed up by an uninterruptible power supply (UPS) in a separate subsea module. Circuit breakers and protection devices that could operate within an oil-filled, pressure-compensated environment are not yet commercially available. The switchgear is in an enclosure that provides a 1-atm pressure environment. Dry nitrogen fills the enclosure. Its physical properties are close enough to air to allow standard electrical equipment to be used. The high-voltage (HV) circuit breakers are proven 36 kV class air-insulated devices. These circuit breakers are also used in arc furnace applications which are characterized by their severe switching duties. The other HV devices used are proven 36 kV class magnetic c...Get price

Hybrid Switchgear PASS for digital substations

A smart grid ready solution for use with IEC 61850 process bus communication. PASS for digital substations belongs to Hitachi ABB Power Grids innovative high-voltage hybrid switchgear family PASS (Plug and Switch System). PASS encloses all functions of a complete switchgear bay in a single module. The hybrid design makes use of traditional air-insulated busbars to connect with other equipment in the substation.Get price

High and Medium Voltage Switchgear | Efacec

Efacec has teams experienced in the development of medium and high voltage equipment with the use of advanced 3D software modeling and simulation of equipment operating under extreme conditions. Efacec is certified according to the following references of Quality, Environment, Health and Safety.Get price

High Voltage Switchgear Breakers

Products Systems. High Voltage Switchgear Breakers. Hitachi ABB Power Grids offers a comprehensive range of high-voltage switchgear and breakers up to 1200 kilovolts AC and 1100 kilovolts DC that help enhance the safety, reliability and efficiency of power networks while minimizing environmental impact. Our technology leadership continues to facilitate developments in areas such as ultra-high-voltage power transmission, enabling smart grids and enhancing eco-efficiency.Get price

Switchgear and Substations - Electrical Engineering Portal

Siemens plans and constructs high-voltage substations comprising high-voltage switchgear, medium- voltage switchgear, major components such as high-voltage equipment and transformers, as well as all ancillary equipment such as auxiliaries, control systems, protective equipment and so on, on a turnkey basis or even as general contractor.Get price

High voltage substations overview (part 1) | EEP

Circuit ConfigurationProtective MeasuresArrangement and ModulesHigh voltage substationsare points in the power system where power can be pooled from generating sources, distributed and transformed, and delivered to the load points. Substations are interconnected with each other, so that the power system becomes a meshed network. This increases the reliability of the power supply system by providing alternate paths for flow of power to take care of any contingency, so that power delivery to the loads is maintained and the generators do not face any outage. The high voltage substation is critical component in the power system, and the reliability of the power system depends upon the substation. Therefore, the circuit configuration of the high voltage substation has to be selected carefully. Busbars are the part of the substation where all the power is concentrated from the incoming feeders, and distributed to the outgoing feeders. That means that the reliability of any high voltage substation depends on the reliability of the busbars present in t...Get price

High Voltage Switchgear | Electrical4U

Feb 24, 2012 · February 24, 2012. by Electrical4U. The power system deals with voltage above 36KV, is referred as high voltage switchgear. As the voltage level is high the arcing produced during switching operation is also very high. So, special care is to be taken during the designing of high voltage switchgear.Get price

The four most common switchgear-based substation types | EEP

Open air substations. Open air substations contain separately mounted and interconnected switching equipment and components, like current transformers (CTs), voltage transformers (VTs), busbar support insulators, cable sealing ends, etc., where atmospheric air provides the main insulation path to earth. Metal enclosed. With metal enclosed arrangement all switching devices and associated components are enclosed in a metallic earthed structure on a per-bay basis and are cable connected. Metal-clad. This is a derivative of the metal-enclosed switchgear where all major components per bay are physically segregated from one another by means of earthed metalwork such that a fault in any one compartment cannot readily spread to adjacent compartments. Gas-insulated substations (GIS) A further form of metal-clad substation that is used mainly at transmission voltages is the gas-insulated substation.

eCompressors: a guide to the compressors of the future - Denso

Mar 12, 2019 · The electric motor runs at a high voltage of 200V or greater, and is cooled by a refrigerant, since it generates heat while operating. In order to insulate the electric motor and compressor housing, compressor oil with high insulating properties is used.Get price

Sulfr hexafluoride circuit breaker maintenance | TD Guardian Articles

Jun 01, 2005 · insulating gas circuit breaker technology was developed in the early 1960s to meet the growing demands for reliable high-voltage circuit breakers with interrupting mediums. The industry was ready for an alternative to the traditional mediums of mineral oil and/or air.Get price

Hybrid switchgear - Hitachi ABB Power Grids

Plug And Switch System (PASS) switchgear is a compact hybrid switchgear fully assembled and high-voltage tested in factory, for rapid installation and energization. The PASS product family covers voltages from 72.5 to 420 kV with breaking current capability ranging from 31.5 to 63 kA. PASS encloses all functions of a complete switchgear bay in a single module.Get price


A gas insulated substation (GIS) is a high voltage substation in which the major structures are contained in a sealed environment with sulfur hexafluoride gas as the insulating medium. GIS technology originated in Japan, where there was a substantial need to develop technology to make substations as compact as possible. The clearance required for phase to phase and phase to ground for all equipment is much lower than that required in an air insulated substation.Get price

Russein Substation, Switzerland

Home. High Voltage Switchgear Breakers. Russein Substation, Switzerland. ABB’s 72.5 kilovolt (kV) hybrid switchgear PASS M0H enables fast and easy installation in the beautiful Val Russein, southeast Switzerland. The 11.6 MW Russein hydropower plant in the canton of Grisons had been in service for 67 years, when work began in 2013 to expand its capacity to 24.2 MW.Get price

Typical circuit breaker auto reclose in high voltage substation

Mar 01, 2019 · HV AC Switchgear (83) High Voltage Circuit Breaker (55) High Voltage Disconnector Switch (17) High Voltage Instrument Transformer (2) LV Switchgear (3) MV AC Switchgear (61) Fault Current Limiter (2) Fuse (3) Gas Switchgear (7) Load Break (2) Recloser (3) Sectinalizer (2) Solid Switchgear (1) Vacuum Switchgear (23) News Latest publishedGet price

High Voltage Switchgear - Thomasnet

May 27, 2021 · Welcome to the most trusted and comprehensive Switchgear: High Voltage directory on the Internet. A broad range of Switchgear: High Voltage resources are compiled in this industrial portal which provides information on manufacturers, distributors and service companies in the Switchgear: High Voltage industry.Get price

Electrical switchgear safety: A guide for owners and users

Electrical switchgear safety A guide for owners and users This is a web-friendly version of leaflet INDG372(rev1), published 04/13 Introduction This guidance is for owners and operators of electrical switchgear in industrial and commercial organisations with little electrical knowledge or expertise available in-house.Get price

Substations, high-voltage Germany | Europages

Substations, high-voltage (6) Substations, low-voltage (2) Electricity - distribution equipment (3) Cables, high-voltage (1) Electric transformers, converters and rectifiers (2) Electricity supply stations (2) Electric motors and parts (1) Electrical components and parts (1) Transformers (2) Cables Networks (1) Cables and wires, electric andGet price

Design tips for medium voltage systems and switchgears in

Planning of medium voltage systems. Medium voltage networks are networks with rated voltages of over 1kV and up to 36kV. Medium voltage switchgear is used in transformer substations and switching substations, and in secondary unit substations and customer substations (in public utility networks only).Get price

ABB High Voltage Switchgear Co., Ltd., Beijing

ABB High Voltage Switchgear Co. Ltd. Beijing was a joint venture established in December 1995 to produce advanced high and medium voltage switchgear products to meet the growing demand for high quality switchgear in distribution network and various industries. The joint venture has adopted advanced technology and production equipment that was transferred from Hitachi ABB Power Grids’ Research and Development Center; located in Sweden, Norway America, Italy and Switzerland, designGet price

Medium Voltage technical guide - Electrical Engineering Portal

between medium and high voltage. Local and historical factors play a part, and limits are usually between 30 and 100 kV (see IEV 601-01-28). The publication IEC 62271-1:2011 "High-voltage switchgear and controlgear; common specifications" incorporates a note in its scope: "For the use of this standard, high voltage (see IEV 601-Get price

Gas Insulated Switchgear| Fuji Electric Global

High-Voltage GIS (Gas Insulated Switchgear) Features Since the first operation of the phase segregated type GIS in 1970, Fuji has successfully developed as a standard series of phase segregated type or three phase encapsulated type GIS which realized a quite compact and very reliable construction.Get price

AC High Voltage Circuit Breakers - IEEE Web Hosting

Hybrid switchgear (Compact switchgear assembly) •It is a combination of open-type (AIS) and metal-enclosed equipment (GIS). •Hybrid switchgear allows to reduce the size of substations and to combine the advantages of AIS and GIS. •Specific IEC standard: IEC 62271-205. •Circuit breaker is of GIS or Dead tank typeGet price

Air-insulated substations up to 800 kV

the high-voltage substations. The scope may also cover medium-voltage switchgear, power transformers, or auxiliary power supply and telecommunication systems. Depending on the customer’s requirements, the Siemens High-voltage substation depart-ment may act in a project as a system inte-grator, turnkey provider, or even as a gen-Get price

High voltage switchyard in electrical substation. | CanStock

High voltage transformer modern substation electrical switchyard. Converters, power lines and control building.Get price

michel rajha - Head of development team - Hexam | LinkedIn

عرض ملف michel rajha الشخصي على LinkedIn، أكبر شبكة للمحترفين في العالم. michel لديه 5 وظيفة مدرجة على ملفهم الشخصي.Get price

Switchgear - Wikipedia

High-voltage switchgear was invented at the end of the 19th century for operating motors and other electric machines. The technology has been improved over time and can now be used with voltages up to 1,100 kV. Typically, switchgear in substations are located on both the high- and low-voltage sides of large power transformers. The switchgear onGet price

Compact substation - Posts | Facebook

Compact substation. 182 likes · 8 talking about this. Compact substation Compact Transformer Hebei Compact Transformer Co., LTD WhatsAPP+8613191921113 WeChat: 13191921113 E-mail: [email protected]Get price

High-voltage substations in the United Kingdom - leslie g

May 16, 2020 · High-voltage substations, electricity in the United Kingdom are listed in the following tables. Substations provide points of entry and exit points of the National network, Northern Ireland electricity. The point of entry of power plants, large wind farms and connecting from other countries and regions. The exit point in the lower transmission and distribution substations and voltage which areGet price