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DC Surge Protection Devices
We have engraved a great position in this field by manufacturing and supplying the best quality range of DC Surge Protection Devices. These devices provide protection against direct and indirect effects of lightning. The offered devices are manufactured at our well-equipped production unit using the finest quality raw materials and the advanced technology under the supervision of our adroit professionals. Further, to fulfill the needs of our esteemed customers, we offer these DC Surge Protection Devices in various specifications at reasonable prices.
Easy to install
DS50PVS/G is a DC Surge Protection Device (SPD) for medium risk DC power applications up to 1200Vdc. The DS50PVS/G provides protection against the direct and indirect effects of lightning and has a unique no leakage current design.
The DS50PVS/G is available for the main operating voltages in photovoltaic: 500, 800 and 1000 Vdc.
UL1449 3rd Edition - DC Rated SPDs
DC Power Surge Protection Overview
Background and Protection Considerations
Utility-Interactive or Grid-Tie Solar Photovoltaic (PV) Systems are very demanding and cost intensive projects. They often require the Solar PV System to be operational for several decades before it can yield the desired return on investment.
Many manufacturers will guarantee a system life of greater than 20 years while the inverter is generally guaranteed for only 5-10 years. All costs and return on investments are calculated based on these time periods. However, many PV systems are not reaching maturity due to the exposed nature of these applications and its interconnection back to the AC utility grid. The solar PV arrays, with its metallic frame and mounted in the open or on roof tops, act as a very good lightning rod. For this reason, it is prudent to invest in surge protection to eliminate these potential threats and thus maximize the systems life expectancy. The cost for a comprehensive surge protection system is less than 1% of the total system expenditure.
To analyze the full threat level of the installation, we must make a risk assessment.
Surge Protectors shunt transients to the earth grounding system. A low impedance ground path, at the same potential, is critical for the surge protectors to function properly. All power systems, communication lines, grounded and ungrounded metallic objects need to be equipotentially bonded for the protection scheme to work efficiently.
Underground Connection from External PV Array to Electrical Control Equipment
If possible, the connection between the external Solar PV Array and the internal power control equipment
should be underground or electrically shielded to limit the risk of direct lightning strikes and/or coupling.
Coordinated Protection Scheme
All available power and communication networks should be addressed with surge protection to eliminate PV system vulnerabilities. This would include the primary AC utility power supply, Inverter AC output, Inverter DC input, PV string combiner and other related data/signal lines such as RS-485, 4-20mA current loop, PT-100, RTD, and telephone modems.