DC Surge Protection Device 1200V 40kA PV Solar SPD solar surge protection device
Surge protection devices (SPDs) prevent electrical equipment from being damaged by surges caused by lightning strikes, voltage spikes, or other sudden voltage increases.
Surge protection devices (SPDs) prevent electrical equipment from being damaged by surges caused by lightning strikes, voltage spikes, or other sudden voltage increases. They are typically installed at the power distribution system inlet or before the equipment. Correct wiring is crucial; incorrect wiring can cause the protection to fail or even create safety hazards.
Surge protection devices (SPDs) prevent instantaneous voltage surges caused by lightning strikes or voltage spikes in power systems, protecting electrical equipment from damage.
They are typically installed at the power distribution system inlet or before equipment. Correct wiring is crucial; incorrect wiring can cause protection failure or even safety hazards.
SPD Overview
In low-voltage distribution networks, transmission lines generally use a three-phase four-wire system. Three lines represent phases A, B, and C, while the neutral line N plays a vital role
in providing a circuit and balancing current, hence the name three-phase four-wire.
Common Surge Protectors
Three types are commonly used. Level 1 is installed in the building's incoming distribution cabinet to protect the main power supply from high current surges.
Level 2 is installed in the distribution box to provide fine protection for branch lines or smaller areas. Level 3 is installed near terminal equipment to protect sensitive electronic equipment.
Different types have different wiring requirements; the appropriate protector must be selected based on the application. The surge protection voltage level Up of each distribution box should be lower than
the surge voltage level Uw that each electronic device can withstand, so as to effectively protect the equipment from damage by surge voltage.
Technical data
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Model |
CYD1-GD-PV |
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SPD according to EN 61643-31 / IEC 61643-31 |
type 2 / class II |
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UCPV( DC) |
500V |
800V |
1000V |
1200V |
1500V |
|
Nominal discharge current (8/20 μs) In |
20 kA |
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Maximum discharge current (8/20 μs) Imax |
40 kA |
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Voltage protection level Up |
2.5kV |
3.2kV |
4.0kV |
4.0kV |
4.5kV |
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Response time tA |
25 ns (L-N) |
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Residual current a.c. and d.c. IPE |
0.3 mA(DC), 0.3 mA(AC), |
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Humidity range |
5% … 95% |
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Range of operating temperatures TU |
-40°C … +70°C |
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Atmospheric pressure and altitude |
80k Pa … 106k Pa, -500 m … 2000 m |
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Operating state / fault indication |
Green ok / Red defect |
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Number of ports |
One port |
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Cross-sectional area (max.) |
2 AWG (Solid, Stranded) / 4 AWG (Flexible) 35 mm2 (Solid, Stranded) / 25 mm2 (Flexible) |
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For mounting on |
35 mm DIN rail acc. to EN 60715 |
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Enclosure material |
V0 fireproof material |
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Place of installation |
indoor installation |
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Degree of protection |
IP 20 |
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Poles |
1P、 2P、 3P |
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Circuit diagram

2P

3P
Drawings
2P

Installation, Usage and Maintenance
This product can only be installed and maintained by qualified professionals. The installation position cannot be touched by hands. Ensure that it is unpowered and check whether the SPD is all right before installation. If there’s damage or the display window is red, the SPD cannot be used any more; if the window is green, the SPD is normal.
The installation of SPD should be based on Fig. 3 IEC 60364-5-53. The cross-sectional area of ground wire should not be less than 4 mm2, and the length of total lead not more than 0.5m.
The minimum distance from any earthed conductive surface at which the SPD can be installed is 8mm.
Connection of remote signalling alarm: the SPD is provided with remote signalling interfaces (NC, COM and NO, normally closed), applicable for remote centralized monitoring or alarm.
After the connection, check if the module is fitted in. If so, NC and COM are closed; if not, repress the module.
Installation Diagram

The 1200V DC surge protection device is designed to safeguard photovoltaic (PV) solar systems from the detrimental effects of voltage surges caused by lightning or other electrical anomalies. As renewable energy systems, such as solar panels, become increasingly popular, the need for robust protection devices like solar surge protection devices (SPDs) is more critical than ever.
With an impressive nominal discharge current of 20 kA and a maximum discharge current of 40 kA, this 40kA PV solar SPD offers comprehensive protection against high-energy surges. These surge protectors are especially beneficial for solar power systems that are exposed to unpredictable environmental conditions, such as storms or lightning strikes.
Why Choose Our 1200V DC Surge Protection Device for Your Solar System?
Our 1200V DC surge protection device offers several key benefits for your solar installation, ensuring the longevity and reliability of your equipment. This SPD is specifically designed to withstand high surge currents while maintaining a low voltage protection level, offering unparalleled protection for your sensitive electrical components.
Incorporating the latest technology, this device adheres to international standards, including EN 61643-31 and IEC 61643-31, ensuring that it meets the strictest quality control guidelines. As a leading 1200V DC surge protection device exporter, we pride ourselves on delivering reliable, high-quality products that protect your investments.
Key Features of the 40kA PV Solar SPD
Our 40kA PV solar SPD is engineered to provide high-level protection in DC circuits. Whether you are looking to safeguard a small residential system or a large commercial solar installation, this SPD is a versatile solution that offers protection for all types of solar PV systems.
Efficient Surge Protection
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Nominal Discharge Current (In): 20 kA
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Maximum Discharge Current (Imax): 40 kA
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Voltage Protection Level (Up): 2.5 kV to 4.5 kV, depending on system voltage
Robust and Reliable Performance
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Fast Response Time: 25 ns (L-N), ensuring immediate protection against voltage surges
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Wide Operating Temperature Range: -40°C to +70°C, allowing the device to function in diverse environments
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High Humidity Tolerance: Operates in environments with humidity levels ranging from 5% to 95%, making it ideal for a variety of locations and climates.
Ideal for PV Solar Systems
The 1200V DC surge protection device is a perfect match for both residential and commercial solar PV systems. By preventing surge currents from reaching sensitive equipment, it ensures that the overall efficiency of the system is not compromised. This SPD is designed to be mounted on 35 mm DIN rails, ensuring compatibility with a variety of installations.
Additionally, the 2P solar surge protection device version offers flexibility in system design and installation, especially in configurations requiring two-pole protection.
Installation Considerations for the 1200V DC Surge Protection Device
Proper installation is essential to ensuring that the 40kA PV solar SPD functions as expected. It is crucial to have this device installed by qualified professionals to avoid installation errors that could lead to malfunction or safety hazards. Ensure the installation follows the guidelines in IEC 60364-5-53 for the best protection.
Once installed, the SPD's status indicator will show green if functioning correctly, or red if a fault occurs, indicating that the device needs to be replaced.
How to Connect the SPD for Remote Monitoring
For users who require centralized monitoring of their surge protection systems, the 1200V DC surge protection device comes equipped with remote signalling interfaces (NC, COM, and NO), which can be used to monitor the device’s status remotely.
Applications of the 40kA PV Solar SPD
The 40kA PV solar SPD is suitable for a wide range of applications, including:
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Residential solar systems
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Commercial and industrial solar installations
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Photovoltaic power plants and renewable energy projects
As a trusted 40kA PV solar SPD company, we have years of experience in providing high-quality surge protection solutions for solar energy systems around the globe.
Advantages of Using Our 1200V DC Surge Protection Device
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Enhanced System Longevity: By preventing damage caused by voltage spikes, your solar energy system's lifespan is extended.
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Minimal Downtime: Quick reaction to surge events ensures that your equipment stays protected without causing extended downtime.
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Easy Installation: Our device is designed for simple, user-friendly installation on DIN rails, making it a go-to choice for both professionals and DIY installers.
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Compliance with International Standards: The product meets EN 61643-31 and IEC 61643-31 standards, ensuring that it provides reliable performance for a wide range of applications.
Protect Your Investment with the 1200V DC Surge Protection Device
If you're looking for a reliable and high-performance 1200V DC surge protection device to protect your solar energy system, look no further. Our 40kA PV solar SPD is designed to offer exceptional protection, improve system reliability, and ensure the longevity of your equipment. With its robust features and high-quality build, it is the ideal choice for both residential and commercial solar installations.
Reach out to our team today to learn more about this product and how it can enhance the safety of your solar system. We are a leading 1200V DC surge protection device exporter, and we are committed to delivering top-tier surge protection solutions to customers worldwide.
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