your electrical power systems
High security of supply for your electrical power systems requires precise planning, assembly, commissioning and maintenance. Our specialist teams maintain more than 800 of their own systems as well as numerous customer systems, and will support you from the concept to the operation of your medium-voltage systems and transformers. Simply delegate the fulfilment of legal requirements and obligations under the Federal Inspectorate for Heavy Current Installations (ESTI) to us.
We offer innovative services from a single source and guarantee consistently high quality of service.
- On-call service for troubleshooting
- Maintenance of switchgears
- Planning, implementation and operation of medium-voltage systems
- Retrofitting of secondary technology
- Measurement services
- Services for low-voltage systems
We regularly organise courses on occupational health and safety, which are tailored specifically to employees working in the field of electrical systems.
We offer services for the operation of high-voltage lines from 36 kV to 380 kV. Our service is based on sound expertise and many years of experience, combined with a high degree of motivation and innovation.
Existing transmission lines:
- Maintenance in accordance with EN 31051
- Expertise and status evaluations
- Legally required securing of cables
- Storage of replacement material
- Troubleshooting and fault repair
- Rental of ewz’s universal support structure for up to 380 kV
New transmission lines
- Approval process
- Engineering and project planning
- Project and construction management
- Detail engineering as well as installation and commissioning (in cooperation with partners and third-party companies)
We maintain and operate numerous rectifier stations in and around the city of Zurich. These stations generate traction power for a variety of public transport companies. From project planning to commissioning and maintenance, we offer all services from a single source to ensure reliable, secure operations.
- Project planning and construction of rectifier stations
- Commissioning and operation
- Inspection, repairs and maintenance
- On-call service and troubleshooting
- Documentation
- Safety concepts
- Consulting for grid analysis
- Use of energy storage systems
What is the capacity limit of your floor connection, and where do you still have reserves? These are the questions that arise when you’re planning renovation work or you need to replace your electrical building installation, if not before. We can offer you answers to these questions with long-term measurement across multiple channels.
- Determine power reserves
- Minimise downtime
- Cut follow-up costs
- Grid quality measurements and measurements in accordance with EN 50160
We inspect, calibrate and repair mechanical and electronic meters as well as smart meters. Our calibration laboratory, which has been officially certified by the Federal Institute of Metrology (METAS), meets the latest technological standards for measuring technology. Every year, we carry out more than 10,000 official tests, acceptance tests and recalibrations.
- Remote meter readings and energy data management (EDM) on a mandate basis
- Consulting and support for meter purchasing, tenders, evaluation of findings and test procedures
Draw on our experience in implementing LED technology and dynamic lighting control. ewz is responsible for public lighting in the city of Zurich, which gives us a great deal of expertise in reducing light pollution and using projectors to illuminate buildings. Our lighting concepts take safety, energy efficiency, light pollution and artistic lighting elements into account.
