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Photovoltaic Fuses and Protection Components

PV-Fuse

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Photovoltaic Fuses and Protection Components

In PV systems consisting of arrays with N>4 module strings fault current can easily exceed the operating current. The current can reach a level that can cause overheating and damage of wire insulation.

To ensure the best possible protection for the system and people working on the equipment, each string of solar panels MUST be protected with one fuse on each "+" and "- " terminal.

These fuses will only isolate the fault string. So the rest of the PV system can continuously generate electricity.

When a fault occurs in the DC circuit of the PV system the absence of natural zero crossing makes the interruption of DC fault more difficult than the inte interruption of AC faults as only the fuse are will force the current to decrease to zero.

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    • Name: PV Cylindrical Fuse Links
      Product Description: A73 series gPV fuses are specially engineered and tested to provide best-in-class protection performance in protecting high power battery charging and managing systems of Electrical Vehicles and Hybrid Electrical Vehicles, up to 1000 Vdc in ratings from 1A to 30A.
      Product Characteristics: 1. Reliable clearing of DC fault currents; 2. High cycling performance; 3.High breaking capacity to 30kA; 4.Operation as low as 200% In overload protection; 5.Full coverage of battery module current; 6.QR code marks on each fuse for traceability; 7.Special design with silver plated caps for high-power PV applications; 8.BH 100-01, BH10-02 holders for DIN rail mounting.
    • Name: PV NH Type Fuses
      Product Description: AX6 series PV fuses are engineered and Dmanufactured for use in combiner box and power storage protection, made from the highest quality materials and tested to the highest standards.With rated currents from 80A to 200A with a breaking capacity of 1OkA.
      Product Characteristics: 1.Reliable clearing of DC fault currents; 2.High cycling performance; 3.Low watt losses; 4.Ultra-compact size and power density; 5.Breaking Capacity: 10 kA@ 1500 Vdc; 6.Time constants: 1-3ms; 7.Operation as low as 200% In overload protection; 8.Full coverage of battery module current; 9.QR code ma「ks on each fuse for traceability.
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    • Name: DC Surge Protection Devices
      Product Description: ASPD Series PV DC Surge Protection Devices are designed and manufactured complying to PV standard IEC 61643-31/EN 50539-11. It is widely used in PV DC combiner boxes, inverters, controllers and DC cabinets. With a rated voltage of 1000 VDC and a maximum discharge current of 40 kA, the integrated high-energy varistor provides highly effective protection against lightning and surge voltages.
      Product Characteristics: 1.Type 2 DC power surge protector for PV systems; 2.Integrated status indicator window; 3.Pre wired complete modular unit (consists of base unit and replaceable protection modules); 4.Maintenance-fee, easily replaceable protection modules; 5.High energy MOV's response time less than 25 Nano-seconds; 6.Optional remote signal contacts for monitoring device (floating changeover contacts FM can be installed); 7.DIN Rail mounting TH35- 7.5 / D1N35; 8.Compatible with IEC 61643-31/EN 50539-11.