Safety Features

Safety Features

Anti-Island Protection

A condition referred to as "Islanding" occurs when a distributed generation source (such as the PV225S Grid-tied Photovoltaic Inverter) continues to energize a portion of the utility grid after the utility experiences an interruption in service. This type of condition may compromise personnel safety, restoration of service, and equipment reliability.

The PV225S employs a method for detecting the islanding condition using a Phase-Shift-Loop (PSL). This method is implemented in the CCU2 to prevent islanding of the PV225S. The CCU2 continuously makes minor adjustments to the power factor phase angle above and below unity. In the event of a utility interruption or outage, these adjustments destabilize the feedback between the inverter and the remaining load, resulting in an over/under frequency or voltage condition.

Upon detection of such a condition, the PV225S then performs an immediate orderly shutdown and opens both the main AC and DC contactors. The fault condition will remain latched until the utility voltage and frequency have returned to normal for at least 5 minutes.

This method has been extensively tested and proven to exceed the requirements of IEEE-929 (Recommended Practices for Utility Interface of Photovoltaic [PV] Systems) and UL-1741 (Static Inverters and Converters for use in Independent Power Systems).

PV Ground Fault Detection

The PV225S is equipped with a ground fault detection circuit by means of a Hall-effect current transducer (CT8). This circuit is active when the PV array is properly grounded. In the event of a ground fault exceeding 10 amps DC, the PV225S will execute an immediate orderly shutdown, open both the main AC and DC contactors, and report a ground fault on the LCD of the UFCU. The PV225S will remain faulted until the ground fault is remedied and the advisory is cleared at the operator interface.

For additional information, see Chapter 4, “Troubleshooting”.

DC Over-voltage Detection

In the event of DC voltage greater than 600 Vdc, the PV225S will execute an orderly shutdown and will report a fault to the operator interface. If DC voltage remains greater than 600 Vdc, the PV225S may be irreparably damaged.

See Chapter 4, “Troubleshooting” for further information on this fault condition.

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Xantrex Technology PV225S-480-P manual Safety Features, Anti-Island Protection, PV Ground Fault Detection
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PV225S-480-P specifications

The Xantrex Technology PV225S-480-P is a state-of-the-art power conversion solution designed to meet the needs of solar energy systems. As the demand for renewable energy sources continues to rise, the importance of efficient inverters becomes paramount. This model stands out for its high performance, reliability, and advanced features tailored for both residential and commercial applications.

One of the main features of the PV225S-480-P is its impressive power handling capability, capable of supporting peak loads up to 225 kW. This makes it ideal for large-scale solar installations, ensuring that energy generation meets or exceeds expected outputs. Additionally, the inverter operates at a high efficiency rate, typically exceeding 98%, which minimizes energy losses during conversion and maximizes the overall performance of the solar power system.

The PV225S-480-P utilizes advanced inverter technology that incorporates an innovative digital signal processor. This technology enhances the unit’s ability to track the maximum power point (MPPT) effectively, optimizing energy harvest even under varying sunlight conditions. The ability to adapt to different environmental factors ensures that the system consistently delivers optimal performance throughout the day.

Reliability and durability are crucial characteristics of the PV225S-480-P. Designed with robust materials and rigorous engineering practices, the inverter is built to withstand demanding conditions, including extreme temperatures and potential environmental hazards. Its sturdy design minimizes maintenance requirements, leading to lower operational costs over the inverter's lifespan.

The inverter is also equipped with comprehensive monitoring and communication capabilities. Users can easily access real-time performance data, allowing for proactive maintenance and immediate troubleshooting if issues arise. In addition, the unit supports integration with various energy management systems, enabling users to optimize their energy usage and reduce overall electricity costs.

Furthermore, the PV225S-480-P includes safety features that comply with international standards, ensuring protection against electrical faults and overvoltage. The inverter’s design incorporates fail-safe mechanisms to protect both the unit itself and connected equipment.

In summary, the Xantrex Technology PV225S-480-P is a highly efficient, reliable, and technologically advanced solar inverter. With its strong power handling capabilities, cutting-edge features, durability, and safety aspects, it is an excellent choice for anyone looking to invest in renewable energy solutions that provide long-term savings and environmental benefits.
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