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Einphasige und 3-phasige flüssigkeitsgefüllte Transformatoren

Leistungstransformatoren

Mit einer Leistung bis zu 60 MVA

Mittelspannungs-Schaltanlagen

Gasisolierte und luftisolierte Schaltanlagen

Transformatorstationen

Schaltanlage, Transformator und Stationskörper: Marke JST!

Batterie-Energiespeichersysteme

Flexible, skalierbare Energiespeicherlösung

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Service, Montage und Inbetriebnahme

Unser Netzwerk für Service

Industries See Overview

Power Generation

Optimizing efficiency while improving the safety and sustainability of energy production.

Power Transmission

Innovating solutions that power a safe, reliable grid.

Power Distribution

Ensuring more efficient, reliable, and safer power distribution systems.

Solar Distribution

Supporting the development of solar platforms to shape a more sustainable future.

Wind Energy

Innovating wind technology to promote a cleaner, greener planet.

Commercial Buildings & Infrastructure

Meeting the ever-changing needs of global commercial infrastructure.

Data Centers

Designing solutions that power digital infrastructure.

Industrial Facilities

Engineering advanced power solutions that meet the needs of modern factories.

Rail & Transportation Systems

Supporting the electrification of modern transport systems and infrastructure.

About Us See Overview

Our Locations

With 7 manufacturing plants and offices in 3 continents, we are here when and where you need us.

Leadership

Our exceptional team of executives, each a standout in their respective credentials, bringing together diverse expertise, visionary leadership, and innovative thinking.

Sustainability

Minimizing our impact and helping customers do the same.

News & Resources See Overview

News

Stay connected with us and see why we are leaders in the industry.

Product Literature

Check out our literature library.

Events

Join us at these upcoming industry events.

Produkte See Overview

Trocken-Transformatoren

Gießharz, VPI und Spezialtransformatoren

Ölverteiltransformatoren

Einphasige und 3-phasige flüssigkeitsgefüllte Transformatoren

Leistungstransformatoren

Mit einer Leistung bis zu 60 MVA

Mittelspannungs-Schaltanlagen

Gasisolierte und luftisolierte Schaltanlagen

Transformatorstationen

Schaltanlage, Transformator und Stationskörper: Marke JST!

Batterie-Energiespeichersysteme

Flexible, skalierbare Energiespeicherlösung

Dienstleistungen See Overview

Service, Montage und Inbetriebnahme

Unser Netzwerk für Service

Industries See Overview

Power Generation

Optimizing efficiency while improving the safety and sustainability of energy production.

Power Transmission

Innovating solutions that power a safe, reliable grid.

Power Distribution

Ensuring more efficient, reliable, and safer power distribution systems.

Solar Distribution

Supporting the development of solar platforms to shape a more sustainable future.

Wind Energy

Innovating wind technology to promote a cleaner, greener planet.

Commercial Buildings & Infrastructure

Meeting the ever-changing needs of global commercial infrastructure.

Data Centers

Designing solutions that power digital infrastructure.

Industrial Facilities

Engineering advanced power solutions that meet the needs of modern factories.

Rail & Transportation Systems

Supporting the electrification of modern transport systems and infrastructure.

About Us See Overview

Our Locations

With 7 manufacturing plants and offices in 3 continents, we are here when and where you need us.

Leadership

Our exceptional team of executives, each a standout in their respective credentials, bringing together diverse expertise, visionary leadership, and innovative thinking.

Sustainability

Minimizing our impact and helping customers do the same.

News & Resources See Overview

News

Stay connected with us and see why we are leaders in the industry.

Product Literature

Check out our literature library.

Events

Join us at these upcoming industry events.

Products and Services

Mittelspannungs-Schaltanlagen

Kontakt Angebot anfordern

The most flexible switchgear options for your power distribution application

Our line of switchgear solutions has been specially designed and re-engineered for over 25 years of continuous development and optimization. We offer medium voltage switchgear to support primary and secondary power distribution networks in various sizes, configurations and insulating mediums. Across all types, our solutions are designed and tested according to ANSI, IEEE and NEMA standards and are UL listed.  In addition, our switchgear is fully tested under IEC and IEEE standard for Internal Arc Classification (IAC) safety.

Dry Air GIS SF6 GIS C-GIS Air Insulated Switchgear (AIS)

Industry-Leading Lead Times

2 - 3 Weeks RFQ Lead Time for GIS

24 - 28 Weeks Gas-insulated Switchgear

2 - 3 Weeks RFQ Lead Time for AIS

24 - 26 Weeks Air-Insulated Switchgear

 

J10N™ Gas-Insulated Switchgear 

Our dry air Gas Insulated Switchgear (GIS) is a more environmentally friendly alternative to traditional gas-insulated switchgear—as it does not contain SF6 gas and instead utilizes natural gas as an insulating medium. As a result, our solution is not subject to regulations and leaves no harmful impact to the environment. In addition, our dry air switchgear offers lower costs due to its simple design and the abundance of gas. We offer a variety of panel designs at the following standard ratings:

  • 5 kV / 600 A / 20 kA
  • 38 kV – 69 kV options (J20N™ GIS – COMING SOON)

 

See All Technical Specifications >

dry air

J10N Solution Advantages

LOWER ENVIRONMENTAL IMPACT THAN SF6 SWITCHGEAR

UP TO 75% SPACE SAVINGS COMPARED TO AIS

REDUCED INSTALLATION & MAINTENANCE COMPARED TO AIS

FRONT ACCESS PANEL FOR EASE OF MAINTENANCE

 

J10X™ Ring Main Unit Gas-Insulated Switchgear (SF6)

Our J10X Ring Main Unit (RMU) Gas-Insulated Switchgear is a great option for power distribution applications It offers optimal dielectric strength while maintaining excellent arc-quenching properties for enhanced safety. Customers often base their decision on the type of GIS solution they choose on space limitations. We offer individual tank and combined tank configurations under the following parameters:

  • Individual gas tank: 15 kV – 38 kV / 1200 A – 600 A / 20 kA – 25 kA
  • Combined gas tank: 15 kV – 27 kV / 600 A / 20 kA

 

See All Technical Specifications >

J10X Solution Advantages

LIGHTWEIGHT, COMPACT DESIGN

UP TO 75% SPACE SAVINGS COMPARED TO AIS

UL LISTED TECHNOLOGY

ROBUST PERFORMANCE WITH ENHANCED SAFETY

 

J20X™ Cubicle-Type (C-GIS) Switchgear

A robust, industrial optimized medium voltage solution utilizing SF6 gas and air as an insulating medium. Our J20X Cubicle Type Gas insulated (C-GIS) Switchgear is offered in a wide range of ratings designed for use in primary distribution applications.  For use on lighter duty secondary distribution applications, we offer a variety of panel designs at the standard ratings:

  • 5 kV / 3000 A / 40 kA 
  • 38 kV / 2500 A / 31.5 kA
  • 69 kV / 1200 A / 31.5 kA 

 

See All Technical Specifications >

J20X Solution Advantages

CUSTOMIZABLE ENCLOSURE OPTIONS

UP TO 75% SPACE SAVINGS COMPARED TO AIS

FULLY ARC RESISTANT

FLEXIBLE DESIGN WITH EXTENDED SPACE

Technical Specifications – Dry Air GIS

Parameters Unit J10N J20N* J20N**
Rated Voltage kV 5 38 69
Rated Power Frequency Withstand Voltage kV 28 80 140
Rated Lightning Impulse Withstand Voltage (BIL) Phase to Phase and Phase to Ground kV 75 170 325
Rated Continuous Current A 600 1200 1200
Rated Short Circuit Current kA 20 31.5 31.5
Rated Peak Withstand Current kA 50 82 82
Rated Frequency  Hz 60 60 60
Rated Gas Pressure (20C)  Bar 1.3 1.3 1.3
Annual Leakage Rate Year < 0.1%
Operational / Survival Temperature Range** °C -25 to +40 / -50 to +60 (low temp upon request)
Ingress Protection Code: Gas Tank / LV**   IP67 / IP40
Altitude** m < 2,000 (high altitude upon request)
Internal Arc Class (IAC) – Arc Resistance Code  1 sec AFLR
Width** mm 450 600 800
Height** mm 450 1200 2360
Depth** mm 1610 ~2100 depends on power cables entry top / bottom. Max is 6 cables bottom entry, 4 power cables top entry.

* – product not currently available. Scheduled for launch 2025 ** – please contact JST for non-standard request *** – by end of 2024, 800 mm width for 69kV will be available

Technical Specifications – Sulfur Hexafluoride (SF₆) GIS

Parameters Unit J10X J10X J10X J20X J20X J20X
Rated Voltage kV 15 27 28 5 38 69
Rated Power Frequency Withstand Voltage kV 36 60 80 28 80 140
Rated Lightning Impulse Withstand Voltage (BIL) Phase to Phase and Phase to Ground kV 95 125 150 75 150 325
Rated Continuous Current A 600 / 1200 600 600 3000 2500 1200
Rated Short Circuit Current kA 20 20 25 40 31.5 31.5
Rated Peak Withstand Current kA 50 50 65 100 82 82
Rated Frequency  Hz 60 60 60 60 60 60
Rated Gas Pressure (20C)  Bar 1.3 1.3 1.3 1.3 1.3 1.3
Annual Leakage Rate Year < 0.1%
Operational / Survival Temperature Range** °C -25 to +40 / -50 to +60 (low temp upon request)
Ingress Protection Code: Gas Tank / LV**   IP67 / IP40
Altitude** m < 2,000 (high altitude upon request)
Internal Arc Class (IAC) – Arc Resistance Code  1 sec AFLR      
Width** mm 450 450 450 600 900 850***
Height** mm 2100 2100 2100 2500 2500 2360
Depth** mm 1610 ~2100 depends on power cables entry top / bottom. Max is 6 cables bottom entry, 4 power cables top entry.

* – product not currently available. Scheduled for launch 2025 ** – please contact JST for non-standard request *** – by end of 2024, 800 mm width for 69kV will be available

Featured Resources & Downloads

JST-LINE-Card_FF_150dpi-002 P24-0126_JST_Power_Equipment_Brochure_10-Pages_Letter_EN_USA_Web_RGB LM-AMA-241-Metal-Enclosed-Gas-Insulated-Switchgear_150dpi
 

J100CLAD™ Air-Insulated Switchgear (AIS)

Our J100CLAD medium voltage air-insulated switchgear provides safe, reliable switching and fault protection. Our solution is an IEEE rated, non-arc resistant, metal clad medium voltage solution that provides safe, reliable switching and fault protection. With independent pole actuators and 3-cycle operation, it maintains a consistent operating time over the life of the unit. And the J100CLAD AIS is specially designed with our J3MAG™ vacuum circuit breaker with the following standard power ranges:

  • 5 – 15 kV / 3000 A / 25 – 50 kA interrupting

J100CLAD Solution Advantages

ENVIRONMENTALLY-FRIENDLY ALTERNATIVE TO GIS

FLEXIBLE, MODULAR DESIGN AND CONSTRUCTION

TILT-OUT CPT / PT COMPARTMENT FOR EASE OF MAINTENANCE

BUILT-IN RACKING MECHANISM

J3MAG™ Circuit Breaker

The J3MAG breaker has been specially designed for optimum performance and ease of operation and maintenance for the J100CLAD Air-Insulated Switchgear. It is a magnetic actuated breaker that offers single-phase operation with independent pole actuators. Having few moving parts, it eliminates the lubrication requirements that exists for other breakers, allowing for longer life and lower operation cost. 

J3MAG Solution Advantages

FEWER MOVING PARTS FOR REDUCED MAINTENANCE

LONGER LIFE WITH LOWER OPERATIONAL COSTS

IMPROVED SAIFI / SAIDI SCORES

SAFER DESIGN WITH EASIER ACCESS DURING SERVICE

Featured Resources & Downloads

LM-AMA-240 J100CLAD Air Insulated Switchgear_150dpi (1) P24-0126_JST_Power_Equipment_Brochure_10-Pages_Letter_EN_USA_Web_RGB AIS J100Clad & Breaker J3Mag Operations Manual JST J100Clad Tech Guide_June 2023 (1)

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Contact Us Today

Have a question for our team? Get in contact with us today.

Contact Us

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JST Power Equipment GmbH

c/o Design Offices
Gervinusstraße 17
60322 Frankfurt am Main

Commercial Register: HRB 133997
Registry Court: Local Court Frankfurt am Main

Managing Director
M. Polk

Kontakt

Telefon: +49 (0) 69 3486 644-0
E-Mail: germany@jstpower.com

VAT-ID
Value-added tax identification number pursuant to Section 27a German Value Added Tax Act (Umsatzsteuergesetz / UStG):
USt-ID-Nr. DE 36 66 98 801

Deutsche Steuernummer
045 236 81057

Responsible Editor
R. Elerick

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