Three-phase AC panel with SPI - 1x 8.0 kW Inverter + 1x 10.0 kW Inverter (total 18kW)
Three-phase AC panel with SPI - 1x 8.0 kW Inverter + 1x 10.0 kW Inverter (total 18kW)
*VAT excluded.
**SHIPPING EXCLUDED
18 kW Three-Phase Photovoltaic AC Panel with SPI and CEI 0-21 Interface Device for 8 kW + 10 kW Inverters
The 18 kW three-phase photovoltaic AC panel with an interface protection system (SPI) and a CEI 0-21 compliant interface device is an electrical panel designed for the management, protection, and control of the alternating current (AC) side in low-voltage grid-connected residential, commercial, and professional photovoltaic systems.
The electrical panel is configured to manage two three-phase photovoltaic inverters of 8 kW and 10 kW, for a total system power of 18 kW. It integrates switching, protection, control, and interface systems designed to ensure proper coordination between the inverters, the electrical line, and the distribution grid in accordance with Italian technical regulations for the connection of power generation systems.
This AC panel for photovoltaic systems allows the safe connection of the inverters to the electrical grid, ensuring compliance with the technical requirements set out by the CEI 0-21 regulations for the connection of power generation systems to the low-voltage distribution grid.
Function of the AC Panel in Photovoltaic Systems
The photovoltaic AC electrical panel represents the interface point between the photovoltaic inverters and the electrical grid. Its main function is to manage the alternating current side of the system, ensuring electrical safety, operational continuity, and component protection.
The interface protection system (SPI) constantly monitors electrical grid parameters such as:
- grid voltage
- frequency
- line operating conditions
- maintenance of values within the limits prescribed by the regulations
In the event of anomalies or non-compliant conditions, the system automatically intervenes by commanding the disconnection of the photovoltaic system from the grid to protect the electrical components and ensure compliance with the technical connection requirements.
In three-phase photovoltaic systems, the AC panel also enables the coordination of electrical protections between the inverters, the power line, and the grid, helping to improve the system's operational reliability.
The presence of the CEI 0-21 SPI interface device makes the panel suitable for applications requiring compliant grid interface management, with provision for external power supply via a 900 VA UPS.
Main Features of the 18 kW Photovoltaic AC Panel
- AC-side management of two three-phase photovoltaic inverters of 8 kW and 10 kW
- Total photovoltaic system power of 18 kW
- SPI interface protection system compliant with the CEI 0-21 regulations
- Interface device for connection to the low-voltage electrical grid
- Wall-mounted panel in an ABS enclosure with IP65 protection rating
- 4-pole 40A isolator for line control and isolation
- 4-pole 40A AC-3 contactor with 230 VAC minimum voltage coil
- Fuse holder with corresponding protection fuses
- Dedicated magnetothermic protection for the inverter lines
- 4-pole 300 mA Class A residual current blocks
- 3P+N Class II surge arrester
- Test report available upon request, reference art. 7750481
Applications of the Three-Phase Photovoltaic AC Panel
- Low-voltage three-phase photovoltaic systems
- High-power residential photovoltaic systems
- Commercial and professional photovoltaic systems
- Installations with two three-phase inverters connected in parallel
- Photovoltaic systems connected to the grid according to CEI 0-21
- Solar-powered electricity generation systems
- Indoor and outdoor installations thanks to the IP65 enclosure
Components Included in the AC Electrical Panel
- 1 wall-mounted panel in an ABS enclosure with IP65 protection rating
- 1 4-pole 40A isolator
- 1 4-pole 40A AC-3 contactor with 230 VAC minimum voltage coil
- 1 CEI 0-21 SPI interface
- 1 fuse holder with corresponding fuses
- 1 3P+N C16A 6kA magnetothermic circuit breaker
- 1 3P+N C20A 6kA magnetothermic circuit breaker
- 2 4-pole 300 mA Class A residual current blocks
- 1 3P+N Class II surge arrester
- Accessories for wall mounting
- Cable glands in sufficient quantity for connecting the input and output cables
- Paper documentation with electrical diagram and visual connection instructions
- Safety labels and component identification
Technical Specifications of the Photovoltaic AC Panel
| Panel type | Three-phase photovoltaic AC electrical panel with SPI interface protection |
|---|---|
| Inverter configuration | 1 8 kW three-phase inverter + 1 10 kW three-phase inverter |
| Rated system power | 18 kW |
| Connection regulations | CEI 0-21 |
| Installation | Wall-mounted |
| Enclosure protection rating | IP65 |
| Main isolator | 4-pole 40A |
| Surge protection | 3P+N Class II surge arrester |
| Residual current protection | 2 4-pole 300 mA Class A residual current blocks |
| External SPI power supply | 900 VA UPS required |
Installation of the AC Electrical Panel for Photovoltaic Systems
The AC electrical panel is designed for wall mounting in technical rooms, service rooms, and outdoor environments where high protection against dust and weather conditions is required.
The robust ABS enclosure with an IP65 protection rating allows reliable use even in demanding installation conditions, ensuring mechanical protection and the safety of the electrical components contained within.
The panel is supplied with accessories for wall mounting, cable glands for connecting the input and output lines, paper technical documentation, and visual instructions for correct installation.
The final sizing and correct integration of the panel into the system must be verified by the electrical designer or a qualified installer based on the inverter configuration, the grid characteristics, and the distributor's requirements.
Frequently Asked Questions about the Photovoltaic AC Panel
What is the SPI system in photovoltaic systems?
The interface protection system (SPI) is a device that monitors the electrical grid parameters and, in the event of abnormal conditions, commands the disconnection of the photovoltaic system to ensure safety and regulatory compliance.
For which systems is this AC panel designed?
The AC panel is designed for three-phase photovoltaic systems with two 8 kW and 10 kW inverters, for a total power of 18 kW, connected to the low-voltage electrical grid.
What does the CEI 0-21 regulation establish?
The CEI 0-21 regulation defines the technical rules for the connection of power generation systems to the low-voltage electrical grid, establishing requirements related to protection, safety, and interface management.
Related search terms
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Important notes: Shipping and order handling costs are not included and will be communicated later during the quoting phase. These costs are due regardless of the chosen delivery method, including pickup at the premises.
Product prices may vary depending on availability and supplier terms at the time of the quote request. Images are for illustrative purposes only and may not accurately reflect the actual product; descriptions may contain errors. We recommend always checking the manufacturer's technical data sheet.
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