Robust disconnectors and earthing switches enhance safety

Disconnectors and earthing switches

The technology of our products sets international trends. We continuously ensure our high quality through optimized production processes, constant product development and a certified quality management system.

Our global production network ensures that we are always reachable and close to our customers. This reduces transportation costs and delivery times, and also improves our carbon footprint.

Voltage range from 36 kV to 800 kV
Rated current up to 5000 A (80 kA – 1 s)
Short-circuit currents are maximum values and maybe only valid for 1s – needs to be verified for specific application
Durable materials for use in strong seismic activity
Suitable for indoor and outdoor use
Switching capacity requirements, such as the commutating currents, electromagnetic and/or electrostatic couplings (also with values above and beyond the IEC)

Maintenance-free contact system without spring elements
Outstanding price-performance ratio
Operational under all severe climatic conditions, including in coastal regions and areas with dramatic temperature differences, high risk of ice formation or strong seismic activity
Type-tested according to IEC 62271-102
Quality control system certified according to DIN EN ISO 9001
Delivery of completely routine-tested and pre-adjusted assemblies simplifies setup and commissioning
Life-time technical support and service on short notice

Main features and advantages:

Design with two rotating insulators mounted on an integrated base frame
The current path opening to the side creates a bigger phase distance in parallel arrangements than with other disconnector types
Convenient design allows for versatile and customized applications, e.g. in parallel, diagonal or in-line arrangements
Integrated base frame can be easily and flexibly adapted to the supporting structure
Available in various colors
Sophisticated contact system ensures long service life and requires no maintenance effort
Extended RIV limits for each voltage level reduce magnetic interference for increased efficiency and reliability
Tested according to national and international standards, such as IEC, ANSI, GOST R and GB

Main features and advantages:

Has three supporting insulators
The center insulator can rotate and carries the current path
Outer supporting insulators carry the fixed contacts
Two open separation sections
Compact and stable design allows for high mechanical tensile loads
Combination with surge arresters possible
Available with self-interlocking mechanism and in various colors
Sophisticated contact system ensures long service life and requires no maintenance effort
Extended RIV limits for each voltage level reduce magnetic interference for increased efficiency and reliability
Tested according to national and international standards, such as IEC, ANSI, GOST R and GB

Main features and advantages:

Vertical disconnection
Busbar connection
Diagonal or parallel arrangement
Applicable for flexible and rigid busbar connections
Compact and stable design allows for high mechanical and thermal loads
Self-interlocking mechanism prevents opening during a short circuit
Sophisticated contact system ensures long service life and requires no maintenance effort
Tested according to national and international standards, such as IEC, ANSI, GOST R and GB

3DN3 OneÅ ulterior isolator (Pantograph)

Main features and advantages:

The great distance between the supporting and rotating insulators ensures the dielectric strength of the parallel insulation, even in saline fog conditions
Delivered in finished assemblies, reducing the time required for installation and commissioning
Available with self-interlocking mechanism and in various colors
Tested according to national and international standards, such as IEC, ANSI, GOST R and GB

Our drive systems offer the following advantages:

Completely finished and pre-adjusted assemblies simplify installation and commissioning
Sturdy, stainless steel housing according to IP 54, standard paint
Can be mounted on switch base on request
IEC tested auxiliary switch with highest endurance class for greatest reliability
Anti-condensation heater
Fulfills the latest international standards, such as IEC, GOST R and GB