Medium Voltage Switchgear
Medium Voltage (MV) refers to distribution systems operating between 1 kV and 72 kV. However, for practical and economic reasons, most medium voltage networks are limited to 36 kV.
Connecting an installation to a medium voltage utility network typically requires a dedicated substation, known as the main substation. Depending on the scale of the installation, additional secondary substations may also be necessary.
What is Medium Voltage Switchgear?
A full range of primary or secondary distribution MV equipment to control, protect, and isolate power distribution systems in electrical distribution, commercial, and industrial applications. The SeT series offers options up to 36kV and up to 72kV.
Why is MV switchgear used?
In electric utilities and in facilities with high electricity consumption, it detects, clears, and isolates faults from any downstream connected electrical equipment, protecting them from overloads. It provides a disconnection point from the upstream electrical grid to:
- Isolate for maintenance
- Automate for backup auto-transfer solutions
- Integrate with microgrids
What are the types of MV switchgear?
The main types of MV switchgear are Air-Insulated Switchgear (AIS), Gas-Insulated Switchgear (GIS), and Shielded Solid-Insulated Switchgear (2SIS).
What is SF6-free MV?
It’s MV without SF6, developed to reduce CO2e and comply with regulations like the F-gas regulation. SF6-free switchgear offers an easy transition and high-performance option.
Medium Voltage (MV) switchgear is a critical component of electrical distribution systems. Urbanization and economic growth continue to drive infrastructure expansion. A significant portion of the MV equipment deployed in electrical networks contains SF6 gas, which has a high global warming potential (GWP)
What is SF6-free medium voltage switchgear innovation?
Our newest innovations in SF6-free medium voltage switchgear are using pure air and solid insulation and vacuum breaking technology for the most sustainable solutions.
How does SF6-free MV switchgear meet market requirements?
They are designed to cater to all major power distribution applications in primary and secondary energy networks, including distributed renewable generation up to 36kV.
Is SF6-free MV switchgear IoT-connected?
IoT-embedded sensors and connectivity provide the latest digital experience and a pathway to predictive maintenance and cost reduction.
What are the benefits of SF6-free MV?
Switching to air and digital MV switchgear delivers boosted efficiency, reduced carbon footprint (CO2e) and compliance with any upcoming regulations on SF6 and F-gases.
MCSeT with EvoPacT HVX Catalogue
Air-Insulated IoT Connected MV Switchgear with EvoPacT HVX up to 24 kV.
What is primary gas-insulated switchgear (GIS)?
Medium voltage switchgear for primary distribution up to 52 kV using gas as insulation, enclosed in a metal enclosure and including high-voltage components like circuit breakers and disconnectors.
What are the benefits of primary GIS?
- Space efficiency: Compact for use where space is limited, with applications from transformer substations to primary power supplies.
- Reliability and longevity: The sealed design withstands harsh environments and offers long life with minimal maintenance.
- Enhanced safety: Internal arc resistance and robust construction, including safety devices to protect operators and equipment from overloads and short circuits.
What are key features of primary GIS?
Compact size, high reliability, and strong performance.
Where is it used?
GIS is used in mining, petrochemical, oil and gas, renewables, container substations, railways, wind power, and critical infrastructure.
Air-Insulated Switchgear (AIS) is a key component of secondary medium-voltage electrical distribution networks operating at 12 kV to 36 kV.
- What are the key benefits of AIS switchgear? With air insulation between live components, they offer peace of mind by simplifying the design and maintenance. Components are easily accessible for quick and efficient maintenance.
- Modular design allows easy customization, expansion, and integration of additional units.
- Safety and reliability provided by design with high safety standards, incl. arc resistance and advanced protection devices, to protect operators and equipment from overvoltage and short circuits.
Where is AIS switchgear used?
It perfectly fits various applications, from industrial facilities, large and commercial buildings, hospitals, airports to electrical distribution networks.
What are its advanced digital capabilities?
New IoT-connected features enable predictive maintenance to maximize efficiency and minimize downtime.
What is secondary gas-insulated switchgear (GIS)?
Secondary GIS are key components of medium voltage substations designed for MV applications from 12 kV to 40.5 kV. They use gas as the insulation medium between live components in a sealed-for-life design.
What are benefits of secondary GIS?
- Compact design and modular structure save space and suit diverse environments.
- Robust and reliable performance.
- Reduced maintenance needs.
- Enhanced safety with internal arc protection and monitoring systems to help protect equipment and operators
Secondary GIS is used in urban distribution networks, industrial sites, renewables, critical infrastructure, data centers, airports, and public transport systems.
What are Ring Main Units (RMUs)?
RMUs are secondary GIS at load connection points in ring-type distribution networks. Our IoT-connected RMUs offer simple solutions with added benefits.
