FAQ
Can one project require multiple types of SPD?
Yes. A complete project may require AC SPD, DC SPD, signal SPD, telecom SPD, Ethernet SPD, and coaxial SPD depending on the equipment and system structure.
Do renewable energy systems need special surge protection?
Yes. Solar PV and wind power systems are often installed outdoors and exposed to lightning risk. They usually require coordinated surge protection on DC, AC, signal, monitoring, and communication lines.
Can CRESIN recommend SPD models for different systems?
Yes. CRESIN can recommend suitable SPD models according to the application scenario, installation position, system voltage, and protection level required.
What information is needed for a complete surge protection solution?
A complete solution usually requires system voltage, single-line diagram, grounding system, installation location, equipment type, cable route, lightning exposure level, and project standard requirements.
Why should surge protection be designed by application scenario?
Different systems have different voltage levels, cable routes, grounding structures, exposure risks, and equipment sensitivity. Therefore, surge protection should be designed according to the actual application scenario rather than using one universal SPD.
What surge protection solutions does CRESIN provide?
CRESIN provides surge protection solutions for solar PV systems, wind power systems, EV charging stations, power distribution systems, telecom networks, CCTV and security systems, and industrial automation applications.
How do I know which SPD accessory is required?
The required accessory depends on the SPD type, system voltage, short-circuit current, installation standard, remote monitoring requirement, and maintenance strategy. For project selection, it is best to confirm the electrical diagram and installation environment.
Can SPD modules be replaced after failure?
Many modular SPDs support plug-in replacement. When the indicator window shows failure status, the protection module should be replaced according to the manufacturer’s instructions while keeping the base installed.
When do I need specialized SPD products?
Specialized SPDs are needed when the application has special voltage, signal type, environmental condition, installation method, or system protection requirement that standard SPD models cannot fully cover.
What accessories are commonly used with SPDs?
Common SPD accessories include backup fuses, circuit breakers, remote signaling contacts, alarm modules, monitoring devices, bases, replacement modules, and installation brackets.
What are specialized SPDs and SPD accessories?
Specialized SPDs and accessories include surge protection products or components designed for specific systems, special installation environments, remote signaling, backup protection, monitoring, mounting, and maintenance requirements.
Can one SPD protect both power and video signal?
Some combined CCTV SPDs can protect power, video, and control signal lines in one device. However, the correct model depends on camera type, cable type, voltage, and signal interface.
What types of SPDs are used in CCTV systems?
CCTV systems may use power SPDs, Ethernet SPDs, coaxial video SPDs, RS485 control line SPDs, and combined power/video/signal SPDs depending on the camera type and wiring method.
Where should CCTV SPDs be installed?
A CCTV & Security SPD is used to protect surveillance cameras, video lines, power supplies, network cables, access control systems, and security monitoring equipment from surge voltage.
Why do CCTV systems need surge protection?
CCTV cameras are often installed outdoors, on poles, building walls, rooftops, or perimeter fences. These exposed locations make them vulnerable to lightning-induced surges through power cables, video cables, or network cables.
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The product range includes production technologies for smart capacitors, digital display meters, surge protectors, dedicated backup protection devices for surge protectors, self-resetting over/under-voltage protectors, control and protection switches, and automatic transfer switches for dual power supplies.
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