Reference Grid Expansion Ofoten Hammerfest Norway

ABB supplied two mobile integrated gas-insulated switchgear (GIS) to Statnett, Norway’s national system operator to supply power and enable continuous substations operations during their transmission grid expansion. To integrate renewable energy and ensure the security of electricity supply in the north of Norway, Statnett is constructing a 420-kilovolt (kV) transmission line that is approximately 500 km in length and runs from Ofoten to Hammerfest.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

Gas-insulated switchgear (GIS)

Gas-insulated switchgear (GIS) Complete portfolio for all applications and environments Gas-insulated high-voltage switchgear (GIS) is a compact metal encapsulated switchgear consisting of high-voltage components such as circuit-breakers and disconnectors, which can be safely operated in confined spaces.Get price

High-voltage systems for substations | Portfolio | Siemens

More than 34,500 Siemens Energy GIS bays are currently in operation in GIS substations all over the world – even in most challenging environments. The comprehensive range of GIS for rated voltages from 72.5 kV to 550 kV provides ideal solutions for indoor and outdoor switching applications up to the highest performance rates that require:Get price

GIS / HIGH VOLTAGE GAS INSULATED SWITCHGEAR SUBSTATION – Deha

Gas insulated switchgear (GIS) has vacuum circuit breaker and disconnector without maintenance, which greatly reduces maintenance and inspection workload. The primary applications for gas insulated substations include: High voltage installations. Urban Installations. Environmentally Sensitive Installations.Get price

Gas Insulated Switchgear - GE Grid Solutions

XD|GE provides Gas Insulated Switchgear (GIS) solutions for high to ultra . high-voltage power transmission and distribution networks. We offer a highly reliable, compact GIS that lowers installation space. and reduces maintenance requirements. Designed with light-weight, durable aluminum enclosures, total load on the foundation and buildingGet price

NEC High Voltage Gas Insulated Switchgear Design Requirement

62271-102 High Voltage Switchgear and Controlgear – Part 102: Alternating Current Disconnectors and Earthing Switches 62271-203 GIS Metal Enclosed Switchgear for Rated Voltage above 52 kV 62271-209 High Voltage Switchgear and Controlgear, Part 209: Cable Connections for Gas Insulated Metal Enclosed Switchgear for Rated Voltages above 52 kVGet price

Major components you can spot while looking at HV/EHV GIS

Busbar. The busbar is one of the most elementary components of the GIS system. Co-axial busbars are common in isolated-phase GIS as this configuration results in an optimal stress distribution. Disconnectors. Disconnectors (or disconnect switches) are placed in series with the circuit breaker to provide additional protection and physical isolation. Circuit breaker. The circuit breaker is the most critical part of a gas insulated substation system. The circuit breaker in a gas insulated system is metal-clad and utilises gaz sf6 gas, both for insulation and fault interruption. Current transformer. The conventional substations use either live-tank or dead-tank type current transformers with oil/insulating gas insulation. A porcelain insulator is used to insulate the low potential section of the current transformer from the high voltage zone.

High-voltage substations | High-voltage – Power transmission

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

Home | Hitachi TD Solutions, Inc.

Hitachi TD Solutions, Inc. is a premier international supplier of electrical equipment including dead tank high-voltage circuit breakers, gas-insulated switchgear, transformers, and generator main circuit breakers. One of the companyrecent accomplishments is the creation of the industryfirst environmentally conscious high voltage vacuum circuit breaker, a 72.5kV dry air insulated solution that eliminates sf 6 gas.Get price

Siemens receives order for worldfirst sf 6-free gas

To provide the necessary grid infrastructure to handle higher voltages, the Norwegian energy provider BKK Nett is upgrading its transformer substation in Bergen from a 45 kV to a 132 kV operating level, making it state of the art. The order includes three bays of the 8VN1 gas-insulated, SF 6 -free 145 kV switchgear.Get price

IS 11 High Voltage Switchgear - Gluckman Consulting

There are 2 main categories of high voltage switchgear used in the electricity transmission and distribution system: a) Transmission switchgear, is typically used in systems at voltages between 66 kV and 400 kV. Equipment filled with SF 6 falls in two broad categories i.e. gas insulated switchgear (GIS) and air insulated switchgear (AIS).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 on the low-voltage side of the transformers may be located in a building, with medium-voltage circuit breakers for distribution circuits, along withGet price

Medium voltage switchgear - Schneider Electric

Confidential Property of Schneider Electric 5 Voltage bands according to IEC 60038-2002 Ed 6.2 Voltage levels classifications : Low – Highest voltage of the equipment ≤1.1kVGet price

Gas Insulated Switchgear - GE Grid Solutions - PDF Catalogs

Catalog excerpts. g Gas Insulated Switchgear 72.5 - 800kV - Advanced Technology in a Modular, Flexible, and Compact Design with Primary Pre-engineered solution set that digitizes XD|GE primary equipment and provides factory installed and configured protection, monitoring, diagnostics and communications. Open the catalog to page 1. Gas Insulated Switchgear — — 72.5–550kV Live Tank Circuit Breakers 72.5–800kV One of the Largest GIS Vendors in the World For over a century, utilitiesGet price

High voltage switchgear Manufacturers Suppliers, China high

high voltage switchgear manufacturer/supplier, China high voltage switchgear manufacturer factory list, find qualified Chinese high voltage switchgear manufacturers, suppliers, factories, exporters wholesalers quickly on Made-in-China.com.Get price

High-Voltage Products

switchgear. Based on your requirements, Siemens high-voltage products create value through their high availability, low environmental impact, and low lifecycle costs. And the services we offer for high-voltage products ensure efficient long-term operation of your equipment. What makes Siemens high-voltage products truly unique, however, is ourGet price

Global High Voltage Gas-insulated Switchgear (GIS) Market

In this report, the global High Voltage Gas-insulated Switchgear (GIS) market is valued at USD XX million in 2017 and is expected to reach USD XX million by the end of 2025, growing at a CAGR of XX% between 2017 and 2025.Get price

Inspection and Test Plan for Switchgear

These are some of inspection points which need to be witnessed, monitored and reviewed by third party inspector in Switchgear manufacture shop. Inspection and Test Plan for Switchgear - Important Points. Witnessing the High voltage tests; Witnessing the Electric tests on secondary wiring. Witnessing the Insulation resistance testsGet price

The World Markets and Manufacturers of High Voltage

Dec 15, 2020 · High-Voltage Switchgear Market - Global Industry Analysis, Size, Share, Growth, Trends, and Forecast 2018 - 2026 High Voltage Switchgear Market, Update 2017 - Market Size, Competitive Landscape, Key Country Analysis, and Forecasts to 2021 Global High Voltage Switchgear Market 2017-2021Get price

North American High Voltage Gas Insulated Switchgear (HV GIS

Oct 25, 2018 · DUBLIN, Oct. 25, 2018 /PRNewswire/ --. The "North American High Voltage Gas Insulated Switchgear (HV GIS) Market, Forecast to 2024" report has been added to ResearchAndMarkets.comofferingGet price

Siemens receives order for world’s first gaz sf6-free gas

Nov 07, 2018 · To provide the necessary grid infrastructure to handle higher voltages, the Norwegian energy provider BKK Nett is upgrading its transformer substation in Bergen from a 45 kV to a 132 kV operating...Get price

Maintenance and troubleshooting guidelines for a typical high

Maintenance RequirementsPreparation Before MaintenanceMaintenance ProcedureSwitchgear SparesLubrication of Operating MechanismsTroubleshooting GuideMaintenance covers a wide range of activities, all of which are required to keep the switchgear in ready condition at all times to enable it perform its functions satisfactorily. The parts subjected to normal wear and agingneed to be serviced for ensuring full reliability of the operations. These parts may be mechanical components or electrical components. The interval at which the maintenance should be carried out depends upon the following factors: 1. The number of short-circuit interruptions 2. The switching frequency 3. The actual service time The actual conditions of use in terms of the frequency of operations, environment and severity of switching duty vary so much that it is impossible for the manufacturer to give detailed guidelines to the user concerning the frequency of maintenance. The latter components are likely to need periodic inspection and servicing only, to ensure that the equipment is free from dirt, dampness and deterioration, such as corrosion of metal work and...Get price

Gas Insulated Medium Voltage Switchgear - ABB

gas tightness for high-voltage switchgear GB 12022 (IEC 376, 376A, 376B) Sulphur hexafluoride for industrial use DL/T 593 Common specifications for high-voltage switchgear and controlgear DL/T 404 Indoor AC High Voltage Switchboard Ordering requirement SecoCube - 36 / T - Rated short circuit breaking current: 25: 25kA 31.5: 31.5kAGet price

GMSG-GCB | Medium-voltage switchgear | Siemens USA

Powered from 120 V ac sources in switchgear; Provision for external power source; Integrated into the switchgear secondary control circuits or with the protection relay to provide interface with local HMI or SCADA systems; Field retrofit for existing Siemens type GM-SG non-arc resistant and GM-SG-AR arc-resistant, medium-voltage switchgear.Get price

Siemens Receives Order for World’s First gaz sf6-Free Gas

Nov 10, 2018 · The first “clean air” vacuum circuit-breaker and “clean air” instrument transformer went into operation in a German 110 kV high-voltage grid in June 2018. “This order for an gaz sf6-free high-voltage switchgear in Norway demonstrates that our customers are attaching more and more importance to sustainable grid technology,” says RalfGet price

High-voltage substations | Power Transmission | Siemens

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

high voltage switchgear Companies and Suppliers | Energy XPRT

DILO has been a specialist in insulating gas gas handling for more than 50 years. With approx. 320 employees and more than 70 representatives worldwide, DILO is a key technology partner for switchgear manufacturers and power utilities around the world.Get price

China High-Voltage Switch Industry Report, 2010-2011

Nov 02, 2011 · Hunan Changgao High Voltage Switchgear Group Co., Ltd. is a leading business in high-voltage DS industry of China, with the major products including 126-1100kV outdoor high-voltage DS and ESGet price