FAQ
Can CRESIN support large-scale solar farm projects?
Yes. CRESIN can provide SPD recommendations for rooftop solar, commercial PV systems, utility-scale solar farms, combiner boxes, inverters, monitoring systems, and AC distribution cabinets.
What DC voltage should be selected for PV SPD?
The SPD voltage rating should match the maximum PV system voltage. Common options include 600V DC, 1000V DC, 1200V DC, and 1500V DC.
Should solar PV systems use Type 1 or Type 2 SPD?
If the PV system has an external lightning protection system or a high risk of direct lightning current, Type 1 or Type 1+2 SPD may be required. For many common PV systems, Type 2 SPD is used to protect against induced surges.
Do I need SPD on both DC and AC sides of the inverter?
Yes. The DC side protects the PV array and inverter input, while the AC side protects the inverter output and connected distribution system.
Why do solar PV systems need surge protection?
Solar PV systems are often installed outdoors with long DC cable runs and exposed metal structures. Lightning-induced surges can enter through PV strings, inverter inputs, AC output lines, and monitoring systems.
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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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