As more and more people are making use of solar power nowadays, protecting electric power systems from surges and overvoltages damage is of utmost importance. One of the main design features of photovoltaic (PV) systems relates to safety and stability, which is provided by PT to prevent electrical surges. In reality, Surge Protective Devices (SPDs), for example, the YCS8-S YCS8 arrangement are the basic protectors that structures or devices get from lightning, power lattice blames, or any basic event that causes a surge. These devices help in offering a protective cover to your solar energy systems from harmful surges thus increasing the sustainability and also the efficiency of the system. In this paper, the function and parameter of YCS8-S and YCS8 series DC SPD is introduced and the reason which makes it suitable for solar power application is explained.
What is the YCS8-S YCS8 Series?
The YCS8-S series surge protective device was specifically created for photovoltaic, or PV power generation system. All essential electrical power systems can experience sudden surges of overvoltage due to lightning strikes, grid switching or electromagnetic interferences; such an incident could prove devastating for delicate power delivery equipment such as solar inverters, combiner boxes or distribution cabinets.
YCS8-S YCS8 surge protectors are specifically designed to conduct and safely redirect overvoltages quickly to ground, protecting against possible system damage in nanoseconds. Utilizing advanced zinc oxide technology, the devices provide fast response times with minimum energy losses or power frequency aftercurrent; hence they offer reliable DC electrical system protection - including PV applications.

Key Features of the YCS8-S YCS8 Surge Protection Devices
The YCS8-S YCS8 series offers several features that make them a reliable and highly efficient choice for photovoltaic power systems:
Two-tier surge protection (T2/T1 + T2): The YCS8-S YCS8 series supports class I (T1) and class II (T2) protection. Class I protection is for direct lightning strikes and withstands the surge from a lightning strike (10/350 μs waveform) and Class II protection counters switching transients which removes surges caused by switching of grid or other disturbance (8/20 μs waveform). The nature of this protective shield is twofold and gives the device a broad scope of potential surge events, providing it with extensive coverage.
High Maximum Discharge Current (Imax = 40kA): The YCS8-S YCS8 features a maximum static discharge current of 40kA, designed for the harshest environments. It leaks little ground current to compensate for systems subject to heavy lightning strikes or other serious surge events.
Modular Design for Easy Maintenance: YCS8-S YCS8 series modular design allows for easy maintenance. If it fails, only the optional protection module needs to be replaced to keep the overall surge protection device in service, minimizing downtime and maintenance costs.
Fast Response Time: With a lightning-fast response time of only 25 nanoseconds, this surge protector works swiftly. Such immediate action is vital to protect sensitive parts of photovoltaic systems from surge overvoltage damage.
Thermal Disconnection for Additional Safety: The YCS8-S YCS8 series Thermal Disconnection for Extra Safety N/A The YCS8-S YCS8 comes standard with a thermal disconnection device for extra safety. In the event of device overheating or other failures, the thermal disconnection device automatically disconnects the device from the system to prevent further damage.
Optional Remote Signaling Capabilities: The YCS8-S YCS8 series offers optional remote signaling for enhanced monitoring and management of the systems. This feature allows users to receive notifications in case of a failure and to take timely action to resolve the problem.
Voltage protection level (Up ≤ 1.5kV): The YCS8-S YCS8 voltage protection level is kept below 1.5kV, indicating the SPD can withstand high voltage surges, effectively protecting equipment from damage.
Green/Red LED for Status Monitoring: The YCS8-S YCS8 comes with a green/red LED window for easy to read indication of the device's status. A green light means the device is working, while a red light means the module has failed and should be replaced.
High-Quality Materials: The YCS8-S YCS8 series is built with fire-resistant materials, rated to UL 94 V-0, ensuring that the device can withstand harsh environments and provide long-term reliability.
Customizable Options: 3-volt ratings are available for the YCS8 series: 2P series - suitable for up to 600V DC; 3P series - suitable for up to 1500V DC photovoltaics.

Technical Specifications of the YCS8-S YCS8
The YCS8-S YCS8 series comes with a comprehensive set of specifications designed to meet the unique demands of photovoltaic systems and DC applications:
Test Category: T1+T2, T2
Number of Poles: 2P, 3P
Maximum Continuous Working Voltage (Ucpv): 600VDC, 1000VDC, 1500VDC
Maximum Discharge Current (Imax): 40kA
Nominal Discharge Current (In): 20kA
Maximum Impulse Current (Iimp): 6.25kA
Voltage Protection Level (Up): 2.2kV, 3.6kV, 5.6kV
Response Time (tA): ≤25ns
Remote and Indication: Green/Red LED for status monitoring, optional remote contacts for fault indication
Working Temperature Range: -40°C to +70°C
Allowable Working Humidity: 5% to 95%
Protection Degree: IP20
Shell Material: Fireproof UL 94 V-0
Thermal Protection: Yes
Installation Method: DIN35 standard DIN-rail
Importance of DC SPD (Surge Protective Devices) in Photovoltaic Systems
In a photovoltaic power generation system, a DC SPD is crucial for protecting the entire electrical setup from lightning-induced surges or overvoltages caused by grid switching events. Photovoltaic systems, by nature, are highly vulnerable to such electrical spikes, as they involve high voltage direct current (DC) circuits that can easily suffer damage when exposed to high energy surges. The YCS8-S YCS8 series DC SPD ensures that the electrical components of your solar power system, including PV panels, inverters, and distribution boxes, remain protected.
Using an SPD like the YCS8-S YCS8 series helps prevent damage that could otherwise lead to costly repairs, system downtime, and even potential safety hazards. The ability of these devices to instantly conduct overvoltage and channel it to the earth minimizes the risk of equipment failure and ensures that your photovoltaic system operates smoothly, even during adverse weather conditions or electrical faults.
Applications of YCS8-S YCS8 Surge Protection Devices
The YCS8-S YCS8 series is primarily designed for use in photovoltaic power generation systems. Below are some of the typical applications of the YCS8-S YCS8:
PV Combiner Boxes: These surge protectors can be used in photovoltaic combiner boxes, where multiple PV strings are connected together. These systems are often exposed to high-voltage surges and require robust protection to prevent damage to critical components.
PV Distribution Cabinets: In larger PV systems, where power is distributed to multiple areas, surge protection is critical to protect distribution cabinets from overvoltage events.
DC Circuits in Solar Power Systems: The YCS8-S YCS8 is ideal for protecting DC circuits, including those connected to solar inverters, battery storage systems, and other key components in the energy generation and storage process.
Direct Lightning Protection: For areas with frequent lightning activity, direct lightning protection is crucial. The YCS8-S YCS8 can handle these direct strikes by providing reliable surge protection to prevent damage to the photovoltaic system.
Conclusion
CNC Electric's YCS8-S YCS8 series DC surge protection devices are key components in protecting photovoltaic power generation systems from lightning strikes and other types of surge events, providing fast response times, high discharge capacities and dual-level surge protection to protect sensitive equipment in solar PV power systems from damaging overvoltages caused by lightning strike or surge events. Their fast response times, high discharge capacities and dual level protection make these devices indispensable. With reliable quality solutions tailored specifically for photovoltaic energy industries.
For both small residential systems and large industrial installations of solar power installations, the YCS8-S YCS8 DC SPD can offer guaranteed protection from surge overvoltages. By adding these devices to photovoltaic systems, they will not only extend their lives and performance but also increase your investment's return.
Post time: Jan-19-2025