For Certified DC1500V SPD Intelligent Surge Protective Device Surplus Protection Generator

Quick Detail:

1. SPD,surge protector

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

Description:

WD2H-PVS Series: The Definitive DC Surge Protection Solution for Modern Photovoltaic and Industrial Systems

In the critical infrastructure of today's energy landscape—spanning expansive photovoltaic (PV) farms, vital telecommunications hubs, and complex industrial DC power systems—the integrity of electrical components is perpetually threatened by transient overvoltages. These surges, originating from lightning strikes, grid switching operations, or internal inductive loads, pose a silent yet severe risk of catastrophic equipment failure, prolonged downtime, and significant financial loss. The WD2H-PVS Series Surge Protection Device (SPD) is engineered as the paramount defensive solution for DC applications, meticulously designed to meet the rigorous demands of the EN 50539-11 standard for PV systems. It represents not merely a protective component, but a cornerstone of system resilience, ensuring operational continuity and safeguarding substantial capital investment against the unpredictable forces of electrical transients.

Engineered to the Highest Standard: Compliance with EN 50539-11

The defining credential of the WD2H-PVS Series is its specific design and testing conformity to EN 50539-11. This European standard is dedicated exclusively to surge protective devices for photovoltaic applications, outlining stringent requirements for performance, safety, and durability in the unique DC environment of solar installations. Compliance guarantees that the device is evaluated under real-world conditions specific to PV systems, including prolonged exposure to DC voltage, environmental stress, and the distinctive wave shapes of surges that can propagate along solar arrays. By adhering to this specialized standard, the WD2H-PVS provides engineers and system designers with verified confidence, moving beyond generic SPD claims to offer targeted, certified protection for one of the most surge-vulnerable and financially critical parts of a renewable energy system.

Robust Electrical Performance for Demanding DC Circuits

The series offers a versatile range of models tailored to various system voltages, ensuring a perfect match for diverse applications. With maximum continuous operating voltages (Uc) spanning from 12/24VDC for control circuits to 1500VDC for large-scale utility PV plants, the product line covers the full spectrum of modern DC power needs. Key to its protective capability is the impressive nominal discharge current (In) of 20 kA (8/20 µs waveform) across all models. This parameter indicates the device's robust capacity to repeatedly handle standard surge events over its lifetime. For extreme events, such as direct or nearby lightning impacts, the maximum discharge current (Ima*) reaches 40 kA (8/20 µs), showcasing its ability to safely divert massive surge energies away from protected equipment without failure.

Superior Protection Level for Enhanced Equipment Safety

The ultimate measure of an SPD's effectiveness is the protection level (Up) it provides—the residual voltage that reaches the equipment after the SPD has operated. The WD2H-PVS Series excels in this critical metric. For instance, the 1000VDC model maintains an Up of only 3.8 kV, while the 1500VDC model limits it to 5.3 kV. The low-voltage 12/24VDC model offers exceptional protection with an Up as low as 0.2/0.4 kV. These low clamping voltages are crucial for protecting sensitive and expensive downstream electronics, such as PV inverters, charge controllers, DC power supplies, and communication modules. By consistently maintaining a low Up, the WD2H-PVS ensures that even during a surge event, the voltage stress on protected apparatus remains within safe tolerances, dramatically extending equipment lifespan and reliability.

Comprehensive Pole Configurations and Type II Classification

Available in standard 2P and 3P configurations—with a customizable 2P option for specific project needs—the series provides flexible wiring solutions to protect between DC positive and negative poles, and where applicable, to ground. Its classification as a Type II (Class II) SPD is a testament to its intended application: for installation at the main distribution board or sub-distribution level within a facility. This classification confirms it is tested to handle the partial surge currents that penetrate a building's main lightning protection system (LPZ 0-1 boundary), making it the ideal solution for the majority of secondary protection scenarios in both commercial and industrial settings.

Application-Specific Design for Peak Reliability

Beyond its stellar electrical parameters, the WD2H-PVS is built for the harsh realities of field deployment. Its design considerations likely include features such as robust thermal management for dissipating surge energy, a clear visual status indicator (often via a color-coded window) for immediate remote or on-site functional checks, and a secure, possibly DIN-rail mountable housing for easy integration into any distribution cabinet. In PV applications, its design inherently accounts for continuous exposure to DC voltage, preventing premature degradation—a common failure mode in SPDs not specifically designed for DC use.

Conclusion: The Strategic Investment in System Longevity

The WD2H-PVS Series Surge Protector transcends the role of a simple accessory; it is a strategic, standards-driven investment in the total cost of ownership for any DC-powered system. In the context of a multi-megawatt solar farm, it protects the heart of the revenue-generating asset—the inverter. In industrial settings, it prevents production halts caused by the failure of PLCs or drive systems. By specifying the WD2H-PVS, engineers and project developers make a proactive choice for risk mitigation. It delivers certified peace of mind, ensuring that the systems we depend on for clean energy and industrial output are fortified against electrical disturbances, maximizing uptime, protecting financial returns, and delivering unwavering performance for years to come.

Applications:

Surge protective device, protect'against lightning surge voltages in solar system"(photovoltaic power supply system). These units must be'installed in parallel"on the networks to be protectedand provide common anddiferent modes protection. Its installed location are recommended at bothends of the dc power'supply line (solar panel side and inverter/converter sideespecially if the line routing is external and long. High energy MOVsequipped with specific thermal disconnectors and related failure indicators.

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.