Solar Fuse Link Overview
The GRL DNPV1085 is a 10×85 mm DC solar fuse link rated for 1500 V photovoltaic systems. It extends GRL’s PV fuse line to higher-voltage applications, accommodating future-oriented solar installations. With current ratings from 2 A up to 32 A, this fuse link provides reliable overcurrent and short-circuit protection for PV strings in 1500 VDC combiner boxes and inverters. Like all DNPV fuses, it is designed for industrial solar use, with a ceramic fuse element that rapidly interrupts faults. The DNPV1085 is ideal for large or utility-scale solar farms that operate at 1500 V, as well as for energy storage systems that use high-voltage DC.
Solar Fuse Link Advantages
Solar Fuse Link Applications
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1500 V PV Combiner Boxes: The primary application is in large solar arrays or utility plants running at 1500 VDC. Each panel string or sub-string is fused with a DNPV1085 to protect against overcurrent.
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High-Voltage Inverter Inputs: As a main DC fuse on 1500 V inverter inputs or DC/AC hybrid systems.
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Large Energy Storage Arrays: Suitable for battery or ultracapacitor storage systems that operate at up to 1500 VDC.
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Offshore and Remote PV Installations: Any high-voltage DC solar application (e.g., island microgrids, large battery banks).
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Renewable Energy Infrastructure: Can serve in standalone DC protection or other renewable projects that leverage high-voltage DC for efficiency.
In all these applications, the DNPV1085 functions as a PV string fuse – often one per string – ensuring safety even at elevated DC voltages. Its higher interrupt rating and 1500 V capability distinguish it for advanced PV projects.
Solar Fuse Link FAQs
1、What does a fuse link do?
It interrupts excessive current by melting, thus protecting the circuit. In PV systems, the fuse link isolates a faulty array string, preventing damage to modules and wiring while leaving other strings intact.
2、What is a PV fuse?
A photovoltaic (PV) fuse is a solar-specific fuse link designed to handle high-voltage DC faults. It uses a long ceramic cartridge filled with sand to extinguish DC arcs. The DNPV1085 is a PV fuse for 1500 V systems.
3、How do you choose the right fuse link?
Ensure the fuse’s voltage rating meets or exceeds the system voltage (1500 V for this fuse). Choose a current rating just above the maximum string current (for example, use a 10 A DNPV1085 for a 9 A string). Verify the fuse size (10×85 mm) matches your holder. Always use an IEC gPV-rated fuse for solar circuits.
4、Is there a difference between AC and DC fuses?
Yes. DC fuses like the DNPV1085 are built to clear a continuous DC. They incorporate sand-filled ceramic designs to extinguish the arc without AC zero crossings. An AC fuse may not safely interrupt a DC fault, so always use a DC/solar-rated fuse in PV applications.
By providing reliable protection at 1500 VDC, the DNPV1085 helps ensure safe, efficient operation of modern solar installations.
