Elektroinstallation PV-Anlage, Karoline-Kaspar-Schule

The contract timeline is as follows:

• Contract start date: The execution of the service is to begin in the 45th calendar week of 2026, at the latest on the last working day of that week.
• Contract end date: The service is to be completed (ready for acceptance) in the 8th calendar week of 2027, at the latest on the last working day of that week.
• Total duration: Approximately 16 weeks.
• Key milestones or phases: The aforementioned start and completion dates are binding contractual deadlines. The contractor is required to create a construction schedule ("Baufristenplan") to demonstrate and monitor compliance with these contractual deadlines.

The core scope of work and statement of work summary for this tender, for the "Elektroinstallation PV-Anlage, Karoline-Kaspar-Schule," includes:

• Hourly labor: Provision of site managers, skilled workers, and assistants, with compensation for regular and additional working hours.
• Electrical Distributors: Delivery, assembly, connection, and operational handover of electrical distributors, including suitable housing, wiring materials, terminal blocks, main and outgoing terminals, wire end sleeves, and labeling.
• Equipment Installation: Mounting, connection, and standard-compliant labeling of all electrical equipment such as circuit breakers, residual current devices, relays, surge protection devices, and control and switching devices.
• Potential Equalization: Establishment of potential equalization within the distributors.
• Circuit Labeling: Clear and permanent labeling of all circuits according to wiring diagrams.
• Testing and Documentation: Performance of electrical tests according to DIN VDE 0100-600 and DIN VDE 0105-100, including detailed documentation.
• LCD Monitor: Delivery and installation of an LCD color monitor (101.6cm/40 inches Full-HD) with a wall console.
• PV Shelters: Delivery and assembly of weather-protected shelters for PV inverters and generator connection boxes on green roof areas, including static design, ballasting, cable entry, cable management, load distribution plates, and protective mats.
• Remote Control Gateway Integration: Installation and electrical integration of a grid operator-provided remote control gateway, including mechanical mounting, power supply, data and control line creation between the gateway and various system components (inverters, battery storage, metering devices, plant control), network connection preparation (LAN/WAN), and coordination with the grid operator.
• Battery Storage System: Delivery, mounting, connection, and commissioning of a stationary battery storage system (e.g., SolarEdge CSS-OD 107 or equivalent) for commercial applications, comprising battery cabinet(s) and battery inverter, including mechanical and electrical integration, parameterization, functional testing, and full documentation.
• Photovoltaic Modules and Optimizers: Supply and installation of photovoltaic modules (e.g., glass-glass, monocrystalline, minimum 450 Wp) for rooftop mounting, along with power optimizers for each module.
• System Measurements: Comprehensive measurement of all systems and installations upon completion, encompassing insulation measurements, protective measure checks, string parameter measurements, and overall system commissioning and functional testing.
• Cable and Line Testing: Measurement of cable and line systems immediately after laying to identify and rule out potential insulation faults or cable breaks.
• Measurement Documentation: Documentation of all measurement results in both paper and digital formats, requiring review and approval by the ELT specialist planning office, followed by the application of test labels.
• Operating Device Inspection: Technical verification of each operating device for insulation faults, short-circuit currents, fault currents, fault tripping times, and protective conductor continuity.
• Halogen-Free Cabling: Installation of halogen-free cables and lines, with permanent labeling of all cable and line ends indicating their number, type, and circuit number.
• Work Platforms: Provision of scaffolding or work platforms as needed.
• Final Documentation: Documentation of the completed work in both printed form and digitally, utilizing USB-C sticks.