100 kW AC panel (single inverter) with CEI 0-21 interface

100 kW Three-Phase Photovoltaic AC Panel with SPI and CEI 0-21 Interface Device for Single Inverter

The 100 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 and protection of the alternating current side in photovoltaic systems connected to the low-voltage distribution grid.

The electrical panel is configured to manage a 100 kW three-phase photovoltaic inverter. It integrates protection, isolation, and control systems designed to ensure the correct coordination of protections between the inverter and the electrical grid according to Italian technical regulations for the connection of power generation systems.

This AC panel for photovoltaic systems allows the safe connection of the inverter to the electrical grid, ensuring compliance with the technical requirements set by the CEI 0-21 regulations for the connection of power generation systems to the low-voltage distribution grid.

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Function of the AC Panel in Photovoltaic Systems

The AC electrical panel represents the connection point between the photovoltaic inverter and the electrical grid. Its task is to manage the alternating current side of the system, ensuring the protection of electrical components and the operational safety of the entire system.

The SPI interface protection system continuously monitors the main parameters of the electrical grid, such as:

• grid voltage
• line frequency
• phase imbalances
• stability of grid conditions

If the electrical parameters exceed the limits established by the CEI 0-21 regulations, the system intervenes by automatically disconnecting the system from the grid to prevent damage to the equipment and ensure the safety of the electrical grid.

This AC panel also enables the coordination of protections between the inverter and the distribution line, improving the reliability and continuity of operation of the photovoltaic system.

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Main Features of the 100 kW Photovoltaic AC Panel

• Alternating current side management for a 100 kW three-phase photovoltaic inverter
• SPI interface protection system compliant with the CEI 0-21 regulations
• Interface device for connection to the electrical distribution grid
• Type 2 SPD + CT for overvoltage protection
• Miniature circuit breakers and residual current devices for line protection
• Interface contactor for automatic system isolation
• Panel status indication via front LED indicators
• Industrial metal enclosure with IP55 protection rating
• Electrical components sized for commercial and industrial photovoltaic systems

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Applications of the Three-Phase Photovoltaic AC Panel

• Commercial photovoltaic systems with three-phase inverters
• Photovoltaic installations on production buildings
• Systems on industrial warehouses
• Renewable energy generation systems
• Systems with connection to the low-voltage distribution grid
• Photovoltaic installations for businesses and production activities

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Components Included in the AC Electrical Panel

• 1 IP55 metal enclosure, dimensions 167 × 84 × 30 cm
• 1 4-pole 200A 36kA molded case circuit breaker
• 1 220-240 VAC opening disconnect switch, frame 250 / 400 / 630
• 1 Type 2 SPD + CT 40kA 3P+N 420 Vac
• 3 modular red 115-230 V LED indicators
• 1 4-pole 315A AC1 230 VAC contactor
• 2 1P+N 6A 30mA 10kA Type A C-curve residual current miniature circuit breakers
• 1 1P+N 16A 30mA 10kA C-curve Type A residual current miniature circuit breaker
• 1 16A 250 VAC Schuko modular socket
• 1 4-pole 180A 36kA miniature circuit breaker
• 1 4-pole frame 250 high-wire terminal cover
• 1 toroidal current transformer, diameter 110 mm
• 1 modular Idn 0.025-25A residual current relay, 110-400 VAC/DC supply
• 1 CEI 0-21 compliant interface device with a delay greater than 5 seconds

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Technical Specifications of the Photovoltaic AC Panel

Panel type	Three-phase photovoltaic AC electrical panel with SPI interface protection
Inverter configuration	1 100 kW three-phase inverter
System rated power	100 kW
Connection regulations	CEI 0-21
Overvoltage protection	Type 2 SPD + CT 40kA
Enclosure protection rating	IP55
Panel dimensions	167 × 84 × 30 cm

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Installation of the AC Electrical Panel for Photovoltaic Systems

The AC panel is designed for installation in technical rooms, industrial environments, or areas dedicated to the management of photovoltaic systems.

The IP55 enclosure protects the electrical components from dust and external agents, ensuring operational reliability even in production environments.

The sizing and configuration of the panel must be verified by the system designer or a qualified installer, depending on the characteristics of the electrical grid and the photovoltaic system.

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Frequently Asked Questions about the Photovoltaic AC Panel

What is the SPI system in photovoltaic systems?

The SPI interface protection system continuously monitors the electrical grid parameters and disconnects the photovoltaic system in the event of anomalies or conditions outside the limits established by the technical regulations.

For which systems is this AC panel designed?

The panel is designed for photovoltaic systems with 100 kW three-phase inverters connected to the low-voltage distribution grid.

What does the CEI 0-21 regulation establish?

The CEI 0-21 regulation defines the technical requirements for the connection of power generation systems to the low-voltage electrical distribution grid, establishing safety and protection criteria for the interface with the grid.

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Related search terms

100 kW photovoltaic AC panel, CEI 0-21 photovoltaic electrical panel, photovoltaic interface protection panel, three-phase photovoltaic inverter panel, commercial photovoltaic system electrical panel, 100 kW inverter AC panel, photovoltaic energy production electrical panel