OUR PRODUCTS
Optimum power supply with the best possible protection
For more than 70 years, we have been developing and producing medium and low-voltage switchgear and controlgear for the industry, plant construction, energy suppliers, and for public clients. Thanks to the benefits of a medium-sized company, we have the flexibility to satisfy our customers’ individual requirements worldwide. We develop customer-specific solutions quickly and to the highest standards.
Holistic project management, starting with the planning, development and manufacture, right up to the installation, commissioning and maintenance of switchgear and controlgear, has proven itself over decades and has meanwhile become our trademark. Our team includes high-performance engineers and trained specialists who work in accordance with national and international standards.
These criteria ensure that the highest safety standards for persons and companies are taken into account. Every switchgear and controlgear that leaves our hall bears the “Engineered in Germany” mark of quality.
Medium-voltage switchgear
In the past, medium-voltage switchgear and controlgear for distribution networks were already exposed to high loads at the primary level. Now, these are becoming even more important due to the expansion of renewable energies. We know this discipline like the back of our hand and plan and develop customised solutions for challenging requirements. Our systems incorporate know-how gained over decades, which we use to ensure optimum power supply, availability and safety.
Our type-tested systems comply with the IEC 62271-200 standards. In addition, some of our systems undergo special tests. For our customers from the industry and energy supply sectors, this offers special protection, which ensures increased safety. This service is supported by our comprehensive range of services from planning, design, development and production, right up to assembly, commissioning and maintenance.
Our single busbar and duplex systems come in a modular design. This way, they can be equipped with different slide-in technologies or fixed installation technology, depending on the type of system. During production, we pay attention to the environmental aspect and refrain from using substances that are harmful to the climate, such as SF6 or other mixed gases.
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WE ARE THERE FOR YOU!
Leukhardt Schaltanlagen GmbH
Im Gewerbepark 10
78194 Immendingen
Phone: +49 7462 945 61-0
Fax: +49 7462 945 61-197
E-Mail: info@leukhardt.de
Internet: www.leukhardt.de
Basis Block MC 1
The Basis Block MC 1 system is a type-tested, air-insulated, metal-enclosed medium-voltage switchgear for applications in industry and power supply companies. This product series can be deployed flexibly, depending on the variable field variants. We use circuit-breakers, contactors and switch disconnector fuses in fixed-mounted and withdrawable technology. Pressure relief is provided via duct or deflector plates.
| Technical data | |
|---|---|
| Standards and regulations | IEC 62271-200 |
| Operational availability | LSC 2A |
| Partition class | PI |
| Arc fault qualification | IAC AFL |
| Rated voltage | max. 24 kV |
| Rated withstand voltage | max. 50 kV |
| Rated impulse withstand voltage | max. 125 kV |
| Rated current | max. 2000 A |
| Rated short-time withstand current | max. 25 kA |
| Rated surge current | max. 65 kA |
| Rated short-circuit duration | 1s |
Basis Block MC 3
The basic Block MC 3 system satisfies the increased requirements of industry and power supply companies. The type-tested, air-insulated, metal-enclosed medium-voltage switchgear and controlgear has variable field variants. They can be flexibly realised with circuit-breakers, contactors and switch disconnector fuses in withdrawable technology.
The requirements of IEC 62271-200 are supplemented by additional tests for high-altitude installation > 2000 m a.s.l., internal arc fault resistance of the bulkhead compartments and increased climatic ambient conditions.
Pressure relief is provided by absorbers, absorbers + duct, duct or deflector plates.
| Technical data | |
|---|---|
| Standards and regulations | IEC 62271-200 |
| Operational availability | LSC 2B |
| Partition class | PM |
| Arc fault qualification | IAC AFLR |
| Rated voltage | max. 24 kV |
| Rated withstand voltage | max. 50 kV |
| Rated impulse withstand voltage | max. 125 kV |
| Rated current | max. 4000 A |
| Rated short-time withstand current | max. 40 kA |
| Rated surge current | max. 100 kA |
| Rated short-circuit duration | 3s |
Basis Block MC 3 S
The Basis Block MC 3S system is a type-tested, air-insulated, metal-enclosed medium-voltage switchgear and controlgear for applications in industry and power supply companies. This product series can be deployed flexibly, depending on the variable field variants. We use circuit-breakers, contactors and switch disconnector fuses in fixed mounting and a contact system in withdrawable technology. Pressure relief is provided via duct or deflector plates.
| Technical data | |
|---|---|
| Standards and regulations | IEC 62271-200 |
| Operational availability | LSC 2B |
| Partition class | PI |
| Arc fault qualification | IAC AFL |
| Rated voltage | max. 12 kV |
| Rated withstand voltage | max. 28 kV |
| Rated impulse withstand voltage | max. 75 kV |
| Rated current | max. 1250 A |
| Rated short-time withstand current | max. 25 kA |
| Rated surge current | max. 52 kA |
| Rated short-circuit duration | 1s |
Low-voltage switchgear
The increased requirements for personal and operator safety are important factors that need to be taken into account when using switchgear. Simultaneously, the demand for system availability is increasing. To satisfy these demands, our switchgear and controlgear is manufactured according to IEC 61439 guidelines and subjected to passive and active arc fault testing.
Like all our products, our low-voltage switchgear and controlgear stands for the highest quality and safety. We cater to customer-specific requirements and pay attention to our customers’ individual needs. With our team of electrical engineers and specialist personnel, we can realise special solutions quickly and effortlessly.
Our systems are design verified according to IEC 61439.
Vario Block TN
The VarioBlock TN is a low-voltage switchgear and controlgear system. It finds its place in various areas of application. The system is highly flexible and variable, thanks to the combination of different functions for power distribution, control and small outgoers, as well as panel variants with withdrawable technology and plug-in technology for circuit-breakers, in fixed installation and plug-in technology, for both fuse-switches and switch disconnector fuses.
| Technical data | |
|---|---|
| Standards and regulations | IEC 61439 |
| Rated voltage | max. 690 V |
| Rated current | max. 5200 A |
| Rated short-time withstand current | max. 100 kA |
| Rated surge current | max. 220 kA |
| Rated short-circuit duration | 1s |
Vario Block TN-S
The VarioBlock TNS belongs to the product family of low-voltage switchgear and controlgear systems. Thanks to the variable use, different customer requirements can be realised. We use passive arc fault protection in this variant for special personal protection. The system is highly flexible and variable, thanks to the combination of different functions for power distribution, control and small outgoers, panel variants with withdrawable technology and plug-in technology for circuit-breakers, in fixed installation and plug-in technology for both fuse switches and switch disconnector fuses.
| Technical data | |
|---|---|
| Standards and regulations | IEC 61439 |
| Rated voltage | max. 690 V |
| Rated current | max. 5200 A |
| Rated short-time withstand current | max. 110 kA |
| Rated surge current | max. 242 kA |
| Rated short-circuit duration | 1s |
| Passive arc fault test | |
| Rated short-circuit alternating current | max. 110 kA |
| Rated short circuit duration | max. 300 ms |
Vario Block TN-V
The VarioBlock TN-V low-voltage switchgear and controlgear system is distinguished from other product variants by active and passive arc fault protection for the protection of persons. The system offers a high degree of flexibility and application diversity by means of the combination of various functions such as power distribution, control and small outgoers, field variants with withdrawable technology and plug-in technology for circuit-breakers, in fixed installation and plug-in technology, for both fuse-switches and switch disconnector fuses.
| Technical data | |
|---|---|
| Standards and regulations | IEC 61439 |
| Rated voltage | max. 690 V |
| Rated current | max. 4800 A |
| Rated short-time withstand current | max. 125 kA |
| Rated surge current | max. 275 kA |
| Rated short-circuit duration | 1s |
| Passive arc fault test | |
| Rated short-circuit alternating current | max. 80 kA |
| Rated short circuit duration | max. 300 ms |
| Arc fault protection active | |
| Rated short-circuit alternating current | max. 100 kA |
| Arc - Extinguishing time | max. 3 ms |
Protective housing indoor/outdoor
Energie Block TEB
The EnergieBlock TEB transformer housing is a system for cast resin transformers for outdoor and indoor use. Transformers up to 2500 kVA with a rated voltage up to 24kV can be installed in this housing. The housing meets the requirements for AN and AF operation and can be equipped with a roof-mounted and cross-flow fan in AF operation. The TEB energy block can be optionally combined with the BasisBlock and VarioBlock systems.
| Technical data | |
|---|---|
| Standards and regulations | IEC 61439 |
| Rated voltage | max. 24 kV/690 V |
| Rated current | max. 630/3200 A |
| Rated short-time withstand current | max. 20/100 kA |
| Rated surge current | max. 50/220 kA |
| Rated short-circuit duration | 1s |
| Arc fault test | with upstream HRC fuse |
| Arc test according to DIN EN 60298 (VDE0670 part 601) and Pehla Guideline No. 4: |
Energie Block TEB-S
The EnergieBlock TEB-S transformer housing is a system for cast resin transformers, used for outdoor and indoor use. Transformers up to 1600 kVA with a rated voltage up to 24kV can be installed in this housing . The housing meets the requirements for AN and AF operation and can be equipped with a roof-mounted and cross-flow fan in AF operation. The TEB energy block can be optionally combined with the BasisBlock and VarioBlock systems.
The transformer housing is tested according to IEC 62271-200 or IEC 61439. Customer-specific requirements can be covered up to 36 kV and an arc fault test up to 20 KA/1S.
| Technical data | |
|---|---|
| Standards and regulations | IEC 62271-200 / 61439 |
| Rated voltage | max. 24 kV/690 V |
| Rated current | max. 630/3200 A |
| Rated short-time withstand current | max. 31,5/110 kA |
| Rated surge current | max. 80/242 kA |
| Rated short-circuit duration | 1s |
| Accessibility type A | Type A |
| Arc fault test according to IEC 62271-200 / 61439 | |
| Medium voltage | |
| Unaffected short-circuit alternating current max. 31.5 kA | max. 31,5 kA |
| Short-circuit duration | max. 1s |
| Low voltage | |
| Unaffected short-circuit alternating current max. 31.5 kA | max. 110 kA |
| Short-circuit duration | max. 300 ms |
Star point housing (outdoor housing)
The star point housing belongs to the product family of energy blocks. This housing is installed outdoors (in the open air) and is used to accommodate transformers and implement medium-voltage neutral point treatment.
Depending on the design of the neutral point treatment, the housing can accommodate circuit breakers, disconnectors, earthing switches, neutral point formers, and resistors.
The housing for outdoor installation complies with the guidelines according to DIN 18195 (building sealing) and the standards IEC 62271-1, IEC 62271-200 and IEEE STd 32-1972 and is subject to the arc fault test according to IEC 62271-200 up to 31.5 kA / 1 s.
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