Вимикач постійного струму VOPV серії L2

Introduction to the VOPV DC Isolator Switch L2 Series

The VIOX VOPV DC Isolator Switch L2 Series represents the pinnacle of safety and reliability in photovoltaic system protection. Specifically engineered for 1-20 KW residential and commercial solar installations, this DC isolator switch provides essential electrical isolation between solar panels and inverters, ensuring optimal system protection and compliance with international safety standards.

With an industry-leading arcing time of less than 8ms, the VOPV L2 Series significantly reduces arc flash hazards, enhancing overall system safety. Operating at voltages up to 1200V DC, these isolator switches are constructed with premium components to deliver exceptional performance and longevity in demanding solar applications.

What is a DC Isolator Switch and Why is it Essential for Your PV System?

A DC isolator switch is a critical safety device that provides a means to disconnect the DC power flow from solar panels to inverters. This isolation capability is essential for safe maintenance, emergency situations, and compliance with electrical regulations. The VOPV DC Isolator Switch L2 Series serves as a reliable mechanical switching device that can completely separate the power source from downstream equipment when necessary.

Unlike basic switches, the VOPV isolator switch is specifically designed to handle the unique challenges of DC current in photovoltaic systems. DC electricity presents particular switching difficulties because, unlike AC current, it doesn’t naturally cross the zero point, making arc extinction more challenging. The VOPV L2 Series addresses this with specialized arc quenching technology, ensuring safe disconnection even under load conditions.

Key Features and Benefits of the VOPV L2 Series DC Isolator Switch

Покращені функції безпеки

• IP20 Protection Level: Ensures protection against solid objects larger than 12mm, providing reliable operation in typical solar installation environments.
• Lockable Handle: The handle can be secured in the “OFF” position, preventing accidental reconnection during maintenance and service operations.
• Ultra-Fast Arc Extinction: With an arcing time of less than 8ms, the risk of dangerous arc flash incidents is significantly reduced.
• High Insulation Voltage: Rated at 1200V, ensuring effective isolation between input and output terminals.
• Short-Circuit Protection: Withstands short-circuit currents of 1kA for 1 second, protecting your system during fault conditions.

Installation Flexibility

• Монтаж на DIN-рейку: Easy integration into electrical enclosures and distribution boards.
• Кілька варіантів конфігурації: Available in 2-pole and 4-pole variants to accommodate single or double string PV systems.
• Current Ratings: Choice of 16A, 25A, or 32A versions to match your specific system requirements.
• Versatile Voltage Options: Compatible with systems operating at 300V, 600V, 800V, 1000V, or 1200V DC.
• Polarity Independence: No fixed polarity requirement, allowing “+” and “-” polarities to be interchanged for simpler installation.

Reliability and Durability

• Premium Component Construction: Manufactured using high-quality materials for extended operational life.
• Механічна міцність: Tested to 18,000 operations, ensuring long-term reliability.
• Electrical Durability: Maintains performance through 2,000 electrical switching cycles.
• High Impulse Withstand: Capable of withstanding voltage impulses up to 8.0kV, protecting against lightning surges.
• Overvoltage Category II: Designed to handle temporary overvoltage conditions in photovoltaic systems.

Відповідність та сертифікація

• Міжнародні стандарти: Fully compliant with IEC60947-3 and AS60947.3 requirements for low-voltage switchgear and controlgear.
• PV-Specific Ratings: Certified for DC-PV2, DC-PV1, and DC-21B utilization categories, specifically addressing photovoltaic application requirements.
• Isolation Suitability: Officially rated as suitable for isolation purposes, ensuring regulatory compliance for safety disconnection.

Technical Specifications of the VOPV DC Isolator Switch L2 Series

Product Models

The VOPV DC Isolator Switch L2 Series is available in three models to accommodate different current requirements:

• VOPV16-L2: 16A rated operational current
• VOPV25-L2: 25A rated operational current
• VOPV32-L2: 32A rated operational current

Електричні характеристики

Параметр	Специфікація
Стандартний	IEC60947-3, AS60947.3
Utilization category	DC-PV2, DC-PV1, DC-21B
Pole configuration	4P
Номінальна частота	ВАШИНГТОН, ОКРУГ КОЛУМБІЯ
Rated operational voltage (Ue)	300V, 600V, 800V, 1000V, 1200V
Rated insulation voltage (Ui)	1200V
Rated short-time withstand current (Icw)	1 кА, 1 с
Rated impulse withstand voltage (Uimp)	8,0 кВ
Overvoltage category	II
Suitability for isolation	ТАК.
Полярність	No polarity, “+” and “-” polarities can be interchanged
Ingress protection (Switch Body)	IP20

Довговічність

Параметр	Значення
Mechanical durability (operations)	18,000
Electrical durability (operations)	2,000

Розміри виробу

Конфігурація електропроводки

Applications of the VOPV DC Isolator Switch in Photovoltaic Systems

Побутові сонячні установки

In residential photovoltaic systems ranging from 1kW to 20kW, the VOPV DC Isolator Switch provides essential isolation between rooftop solar panels and inverters. This isolation capability ensures homeowners and maintenance personnel can safely work on or around the system when necessary. The lockable handle feature is particularly valuable in residential settings, preventing accidental reconnection during maintenance and ensuring compliance with residential electrical safety codes.

Commercial Solar Arrays

Commercial photovoltaic installations benefit from the VOPV L2 Series’ robust construction and high voltage ratings. These isolator switches are ideal for systems up to 20kW, providing reliable disconnection capability for routine maintenance, emergency situations, or system modifications. The DIN rail mounting feature allows for neat integration into commercial electrical control panels, while the various current rating options (16A, 25A, 32A) accommodate different commercial system configurations.

String Isolation in Multi-String Systems

For larger photovoltaic installations utilizing multiple strings of solar panels, the VOPV DC Isolator Switch enables individual string isolation. This functionality is crucial for troubleshooting and maintenance, allowing operators to isolate specific strings without shutting down the entire system. The 4-pole configuration is particularly useful for double-string applications, providing comprehensive isolation with a single device.

System Upgrade and Expansion

When upgrading or expanding existing solar installations, the VOPV DC Isolator Switch provides a safe disconnection point for integrating new components. The switch’s compliance with international standards ensures compatibility with both new and existing equipment, facilitating seamless system modifications without compromising safety or performance.

Installation Guidelines for the VOPV DC Isolator Switch

Location Considerations

For optimal performance and safety, the VOPV DC Isolator Switch should be installed:

• In a weatherproof enclosure if used outdoors
• As close as practical to the solar array
• In an accessible location for emergency operation
• Away from direct exposure to sunlight and extreme weather conditions
• In compliance with local electrical codes regarding DC isolation requirements

Mounting Procedure

1. Ensure all power sources are disconnected before installation
2. Mount the isolator switch securely to the DIN rail within an appropriate enclosure
3. Verify that the mounting orientation allows for proper handle operation
4. Ensure adequate clearance around the switch for ventilation and cable routing
5. Confirm the enclosure meets the required IP rating for the installation location

Інструкція з підключення

1. Connect the DC positive and negative conductors from the solar array to the input terminals
2. Connect the output terminals to the inverter input conductors
3. Ensure all connections are tight and secure to prevent high-resistance connections
4. Use appropriately rated DC cable that meets local electrical code requirements
5. Implement proper cable management to prevent strain on terminal connections

Тестування та введення в експлуатацію

1. Verify all connections are correct and secure before energizing
2. Test the isolator switch operation to confirm smooth mechanical function
3. Verify that the handle can be locked in the OFF position
4. Measure open-circuit voltage across output terminals when the switch is in the OFF position to confirm isolation
5. Document installation details for future reference and maintenance

Maintenance and Safety Considerations

Планова перевірка

To ensure continued reliable operation, regularly inspect the VOPV DC Isolator Switch for:

• Signs of physical damage or overheating
• Loose connections at terminals
• Proper operation of the switching mechanism
• Functionality of the locking feature
• Any indications of water ingress or contamination

Процедури безпеки

When working with or around the VOPV DC Isolator Switch:

• Always turn the isolator to the OFF position and lock if possible before performing maintenance on the PV system
• Remember that solar panels continue to generate voltage even when disconnected from the inverter
• Use appropriate personal protective equipment when operating the isolator switch
• Verify isolation using a voltage meter before touching any conductors
• Only qualified personnel should install or service the isolator switch

Advantages of Choosing VIOX VOPV DC Isolator Switches

Якість та надійність

VIOX has established a reputation for manufacturing high-quality electrical components for renewable energy systems. The VOPV DC Isolator Switch L2 Series exemplifies this commitment to quality, with each unit constructed using premium components selected for their durability and performance. With mechanical durability tested to 18,000 operations and electrical durability of 2,000 cycles, these isolator switches are built to provide years of reliable service in demanding photovoltaic applications.

Safety Innovation

Safety is paramount in photovoltaic system design, and the VOPV L2 Series incorporates multiple innovative safety features. The ultra-fast arcing time of less than 8ms significantly reduces arc flash hazards, while the lockable handle mechanism prevents accidental reconnection during maintenance. These safety innovations, combined with compliance with rigorous international standards, make the VOPV DC Isolator Switch an ideal choice for system integrators and installers who prioritize safety.

Універсальність та адаптивність

The VOPV DC Isolator Switch L2 Series offers exceptional versatility across a range of photovoltaic applications. With multiple current ratings, voltage options, and pole configurations, these isolator switches can be adapted to virtually any residential or commercial solar installation up to 20kW. The polarity independence feature further enhances installation flexibility, allowing for simpler wiring configurations and reducing the potential for installation errors.

Global Compliance

In an increasingly regulated industry, compliance with international standards is essential. The VOPV L2 Series meets the requirements of IEC60947-3 and AS60947.3, ensuring acceptance by electrical inspectors and authorities worldwide. This global compliance simplifies specification and approval processes for system designers and installers working across different jurisdictions.

Conclusion: The Critical Role of Quality Isolator Switches in PV System Safety

The VIOX VOPV DC Isolator Switch L2 Series represents a critical safety component in modern photovoltaic installations. As solar energy continues to gain prominence in both residential and commercial applications, the importance of reliable, high-performance isolation devices cannot be overstated. The VOPV L2 Series combines advanced safety features, robust construction, and comprehensive certification to deliver peace of mind for system owners, installers, and maintenance personnel.

By selecting the VOPV DC Isolator Switch for your photovoltaic system, you’re not merely complying with electrical safety requirements—you’re investing in premium protection that enhances system longevity and operational safety. With voltage ratings up to 1200V DC and current options from 16A to 32A, there’s a VOPV L2 Series isolator switch perfectly matched to your specific application requirements.

For more information about the VOPV DC Isolator Switch L2 Series or to discuss your specific photovoltaic isolation requirements, please contact our technical support team at VIOX. Our experienced specialists are ready to assist with product selection, installation guidance, and system design considerations to ensure optimal performance and safety for your solar energy installation.