Engineering office for planning and construction supervision of high and low current systems
Ingenieurgesellschaft Lehner & Sachse mbH
Zittauer Straße 12, 02681 Wilthen · GermanyNew on Amplifa
About the Engineering Office
Ingenieurgesellschaft Lehner & Sachse mbH (ILS Elektro) is an electrical engineering office founded in Wilthen in 1994. The team of electrical engineers and technical specialists handles planning, design, and construction supervision of high and low current systems for public and industrial clients, as well as private investors. The scope of services includes electrical systems for residential and social housing, medical facilities, industrial buildings, and explosive atmosphere (Ex) systems, data network and telephone systems, uninterruptible power supply (UPS) systems, electro-acoustic systems, fire alarm systems (HAA, BMA, EMA, SAA), lightning protection systems with risk analysis, photovoltaic systems with amortization calculation, access control and time tracking systems, as well as external and object lighting. Projects are supported in all phases by a partner and their team; cost certainty, functionality, and schedule certainty are paramount. Reference projects range from industrial buildings (e.g., TRUMPF Sachsen, Elbe Flugzeugwerke Dresden) to schools, sports facilities, and baths, up to hospitals and administrative buildings. The office is located at Zittauer Straße 12 in Wilthen (02681, Saxony).
- Site
- Wilthen
- Processes
- Planning and Designing High and Low Current Systems, Electrical Engineering Construction Supervision, Planning Electrical Systems in Industrial Areas and Ex-Systems, Planning Data Network and Telephone Systems, Planning Uninterruptible Power Supply Systems, Planning Fire Alarm Systems HAA, BMA, EMA, SAA, Planning Lightning Protection Systems with Risk Analysis, Planning Photovoltaic Systems with Amortization Calculation
- Materials
- Electrical Engineering Specialist Planning, Construction Supervision, Data Network and Telephone Systems, Uninterruptible Power Supply Systems, Fire Alarm Systems, Lightning Protection, Photovoltaic Systems
- Certificates
- Professional Liability incl. Environmental Damage Insurance
- Founded
- 1994
- Industries
- Public Construction, Industrial Construction, Healthcare, Education, Residential Construction, Care/Social Facilities
- 01
Consulting and Offer Creation
- 02
Planning and Specialist Planning of Electrical Systems
- 03
Design
- 04
Construction Supervision
- 05
Acceptance and Project Documentation
Service Areas
Electrical Engineering Specialist Planning
Planning and design of high and low current systems for public and industrial clients.
Construction Supervision
Supervision of the execution of electrical systems on the construction site.
Data Network and Telephone Systems
Planning of structured cabling and communication systems.
Uninterruptible Power Supply Systems
Planning of interruption-free power supplies.
Fire Alarm Systems
Planning of HAA, BMA, EMA, and SAA.
Lightning Protection
Lightning protection systems including risk analysis.
Photovoltaic Systems
Planning with amortization calculation.
Location
Wilthen
DEOffice / Headquarters
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Planning and Designing High and Low Current SystemsEngineering | – | – | – | – | – |
| Electrical Engineering Construction SupervisionEngineering | – | – | – | – | – |
| Planning Electrical Systems in Industrial Areas and Ex-SystemsEngineering | – | – | – | – | – |
| Planning Data Network and Telephone SystemsEngineering | – | – | – | – | – |
| Planning Uninterruptible Power Supply SystemsEngineering | – | – | – | – | – |
| Planning Fire Alarm Systems HAA, BMA, EMA, SAAEngineering | – | – | – | – | – |
| Planning Lightning Protection Systems with Risk AnalysisEngineering | – | – | – | – | – |
| Planning Photovoltaic Systems with Amortization CalculationEngineering | – | – | – | – | – |
| Planning Access Control and Time Tracking SystemsEngineering | – | – | – | – | – |
| Planning External and Object LightingEngineering | – | – | – | – | – |
Additional services
Reference customers
Assurance & Safety
To safeguard clients, there is professional liability insurance including environmental damage insurance with 3,000,000 Euro for personal injury and 1,000,000 Euro for property and financial damage.
| Evidence | Wilthen |
|---|---|
| Professional Liability incl. Environmental Damage Insurance |
Company History
- 1994
Founding of the office by Dipl.-Ing. Hans-Jürgen Lehner and Dipl.-Ing. Christian Sachse
- 2002
Hans-Jürgen Lehner retired in December
- 2003
Christian Sachse took over management as the owner
- 2019
Reorganization into a GmbH with Andreas Sachse as business partner and shareholder
- 2025
Florian Wogawa became another shareholder of the GmbH