CERTIFIED Surge Protective Device DC SPD Surge Protector Intelligent Surge protection Device

Quick Detail:

1. SPD,surge protector

2. protect against lightning surge voltages in solar system (photovoltaic power supply system)

Description:

WD2H-PV(T1+T2): The Ultimate Integrated Surge Defense for Photovoltaic Power Plants

In the vast, exposed landscapes where megawatt-scale photovoltaic (PV) power plants operate, electrical systems face an unparalleled threat matrix. They are prime targets for both direct lightning strikes and the massive, induced surge currents that follow. Traditional surge protection strategies, employing separate devices for primary (Type 1) and secondary (Type 2) protection, introduce complexity, cost, and potential coordination gaps. The WD2H-PV(T1+T2) Surge Protection Device (SPD) shatters this conventional approach, introducing a revolutionary, integrated solution engineered from the ground up to provide seamless, uncompromising defense for the most critical and valuable asset in a solar farm: its DC side. It is not merely a component but a system-level safeguard, designed to withstand the direct wrath of nature while ensuring the continuous, profitable operation of renewable energy infrastructure.

Redefining Protection: The Pioneering T1+T2 Integrated Design

The core innovation of the WD2H-PV(T1+T2) lies in its groundbreaking classification as a Type 1+2 Combined SPD. This signifies a single device that meets the rigorous testing standards for both Type 1 (lightning current arrestor, tested with the severe 10/350 µs waveform simulating a direct strike) and Type 2 (surge arrestor, tested with the 8/20 µs waveform for induced transients). This integration delivers profound field advantages. It eliminates the need for separate devices and the precise coordination between them, simplifying system design, reducing installation points, and minimizing potential failure points. By incorporating a robust Iimp (Maximum Lightning Current per pole) rating of 5 kA (10/350 µs) and an Itotal (Total Lightning Current) of 10 kA, the device is certified to safely intercept and discharge a significant portion of a direct lightning strike's energy at the service entrance, a capability once reserved for bulky, dedicated Type 1 units.

Unmatched Surge Handling Capacity for Extreme Conditions

Beyond lightning currents, the WD2H-PV(T1+T2) is built to manage the intense surge environment of a PV array. Its Nominal Discharge Current (In) of 20 kA (8/20 µs) per pole confirms its endurance for repeated high-energy surge events. For the most extreme transient events, it boasts a Maximum Discharge Current (Imax) of 40 kA (8/20 µs) per pole, with a staggering Total Maximum Discharge Current (Itotal) of 60 kA (8/20 µs). These figures represent the pinnacle of surge diversion capability, ensuring that even under catastrophic surge conditions, the SPD will channel destructive energy safely to ground, protecting sensitive and astronomically expensive downstream inverters. The device’s robust withstand short-circuit current (Iscpv) rating of 1000A further guarantees its mechanical and thermal stability under fault conditions, ensuring it fails safely if required.

Superior Voltage Protection for Critical Inverter Hardware

The ultimate goal of any SPD is to limit the voltage seen by protected equipment. The WD2H-PV(T1+T2) excels with its exceptionally low Protection Level (Up). For the 1000Vdc model, the Up is a mere 3.5 kV, and for the 1500Vdc model, it is 5.2 kV (measured at In, for both Common Mode and Differential Mode protection). This low clamping voltage is critical for inverter longevity, as modern inverters have sensitive DC-side electronics with shrinking voltage tolerances. By clamping surge voltages to these low levels, the SPD ensures that the inverter's operational lifespan is not degraded by electrical stress, directly protecting the system's return on investment and minimizing operational downtime.

Engineered for Photovoltaic System Realities

The WD2H-PV(T1+T2) is meticulously tailored for the DC environment of solar installations. Its Maximum Operating Voltage (Ucpv) options—600Vdc, 1000Vdc, and 1500Vdc—cover all mainstream and next-generation high-voltage string configurations. The designation "PV" confirms its internal design is optimized for continuous DC voltage application, preventing premature degradation. The provision of both 2P and 3P configurations offers design flexibility for different grounding schemes (e.g., positive/negative to ground). Crucially, parameters like leakage current (Ipe) and follow current (If) are listed as "none," indicating a safe, fail-safe design that does not introduce ground leakage or risk of AC follow-current, which are essential safety considerations in PV systems.

Conclusion: The Strategic Linchpin of Solar Asset Management

The WD2H-PV(T1+T2) transcends conventional surge protection. It represents a paradigm shift towards consolidated, ultra-reliable defense for utility-scale and commercial solar projects. By integrating Type 1 and Type 2 protection into a single, robust unit, it delivers unmatched system simplification, enhanced reliability, and lower total cost of ownership compared to traditional cascaded setups. For EPC contractors, it streamlines design and installation. For asset owners and operators, it provides the peace of mind that their multi-million-dollar investment is shielded by the most advanced, capable, and standards-compliant surge protection technology available. In the high-stakes world of renewable energy generation, where uptime is directly linked to revenue, the WD2H-PV(T1+T2) is not an optional accessory; it is the fundamental, non-negotiable foundation for ensuring the resilience, profitability, and long-term viability of a photovoltaic power plant. It is the definitive guardian at the gate, engineered to decide the fate of transient energy, ensuring it never reaches the heart of your power system.

Applications:

WD2H-PV is a Type 1+2 surge protector specially designed for photovoltaic power generation, it is installed at the outlet of photovoltaic panels with high risk of direct lightning strike, it is suitable for photovoltaic system protection with DC voltages of 1000V and 1500V

Competitive Advantage:

Advantages of Wenzhou DAQUAN Electric Co., Ltd

1. Innovation Leadership

With 258 patents and 27 years of industry experience, we lead in R&D of industrial control devices like relays and timers, ensuring cutting-edge product performance.

2. Global Certifications

Our products hold CE, ROHS, IEC, TUV certifications plus ISO9001, meeting strict international standards for seamless global market access.

3. Scale Supply Stability

Backed by a 7,800m2 factory, 499-strong team, and 70M RMB annual output, we guarantee efficient production and timely delivery for bulk orders.