Retrofit & Modernization – Your full-service provider for seamless switchgear upgrades
We modernize switchgear by replacing and seamlessly integrating new, tested components. Obsolete equipment is replaced, protection and control concepts are updated, and the system is thus brought into a homogeneous, documented, and auditable state. The goal is reliable operation with predictable costs, reduced susceptibility to failure, and easier coordination with grid operators. Modernization also means that acceptance procedures must run smoothly. We align measures with relevant standards and grid requirements (e.g., VDE standards), prepare test documentation, and support coordination with grid operators to ensure transparent and timely approvals.
Direct Benefits – From Investment to Daily Operation
Better approval capability
Updated documentation and standard-compliant equipment accelerate testing and acceptance processes.
Plannable investment costs
Targeted modernization instead of replacement construction reduces CAPEX with clear benefits.
Faster adaptation to changing operating conditions
Additional outgoings, new load profiles or storage operation can be safely integrated.
Fewer unplanned outages
Modern protection and switching technology reduces susceptibility to faults and interventions during ongoing operations.
A Structured Approach to System Modernization
Our modernization packages are pragmatically and consistently designed for safe, trouble-free operation. We support you from the initial inventory, through variant evaluation and detailed planning, to targeted replacement and commissioning. We consider your operational requirements, coordination with network operators, and future expansion options.
Greiner not only supplies the technology but also advises you every step of the way, ensuring structured implementation and a smooth transition to regular operation – so you can rely on reliable, verifiable results. We can provide the following services upon request:
- Targeted replacement of key equipment: Circuit breakers, protective relays, controllers, and measuring devices are replaced with tested, documented new parts.
- Capacity expansion and additions : Additional outgoing branches, new switchgear panels or external solutions (e.g. outdoor cabinet) are integrated without unnecessarily disrupting the main structure.
- Communication and automation: PLC/SCADA upgrades, monitoring interfaces, telecontrol technology, and utility interfaces ensure transparency and controllable processes.
- Updated measurement technology and grid protection : Implementation of limit power monitoring, precise measurement and coordinated protection concepts for changed load profiles.
- Mechanical and electrical adjustments: Optimized cable routing, transfer points, grounding, and cabinet layout according to the latest technology.
Implementation with Reduced Risk and Full Transparency
Our approach to retrofitting and modernization is designed to minimize downtime and maximize the predictability of your project. We begin with a detailed inventory, carefully analyzing the condition, potential weak points, and the grid operator’s specifications. Based on this, we evaluate various technical options and prepare a transparent cost-benefit analysis with clearly defined implementation times.
We then prefabricate and pre-assemble the required modules in our in-house production facility to significantly reduce on-site assembly times. The actual replacement is carried out in a sequenced manner according to a clear schedule, keeping disruptions to a minimum.
After all work is completed, we conduct comprehensive tests and acceptance tests (e.g., Site Acceptance Test) and provide complete documentation and training to your team. Even after commissioning, we are available to provide maintenance support, clear inspection intervals, and a well-thought-out spare parts concept to ensure the safe and long-lasting operation of your modernized switchgear.
Practical examples of safety and performance improvements
- Medium-voltage switch upgrade including protection adaptation → lower failure probability and simplified testing processes.
- Integration of a battery storage system through an additional cabinet and control upgrade → fast grid connection and scalable expansion.
- Connection of wallbox clusters with load management → secure load distribution and plannable expansion options.
Clear, Tangible Benefits for Your Business
Targeted replacement, documented integration, and sustainable operational security – retrofitting is often the most cost-effective way to bring systems up to current requirements. Greiner delivers technically sound, verifiable modernizations with transparent cost and schedule planning.
