The fuse is used in the photovoltaic combiner box, and the current value of the fuse is determined according to the short-circuit current value of each current of 1.25 times.
Fuse: Also known as fuse link, when the circuit fails or is abnormal, the current continues to increase, and the high wind may damage some critical components in the course or may burn the system, or even cause a fire after installing the fuse itself. The fuse cuts off the current and protects the safe operation of the circuit.
Fuse-links used in photovoltaic array protection shall meet the following requirements:
a. The rated voltage is greater than or equal to the maximum voltage corrected according to the expected minimum temperature of the installation site according to the photovoltaic panel manufacturer's instructions or the table above;
b. DC fuse link;
c. The rated breaking capacity is not lower than the fault current from the photovoltaic array and other connected power sources such as batteries, generators, and grids, if present;
d. Models that meet the IEC60269-6 standard are suitable for PV overcurrent and short circuit protection.
The fuse-link support used for photovoltaic array protection shall meet the following requirements:
a. The rated voltage is greater than or equal to the maximum voltage corrected according to the expected minimum temperature of the installation site according to the photovoltaic panel manufacturer's instructions or the table above;
b. The rated current is greater than or equal to the rated current of the corresponding fuse-link;
c. The protection level is suitable for the installation site and not lower than IP 2X.
Selection of rated current and safety position requirements of overcurrent protection fuse-links, etc.
To protect photovoltaic strings, VICFUSE photovoltaic fuses should be installed where the photovoltaic string wires are connected to the photovoltaic sub-array cables, such as the position of the photovoltaic combiner box such as the sub-array combiner box. In addition, the positive and negative plates must be installed, as shown in the following photovoltaic system. as shown in the figure. The rated current of the fuse link should be within the range of 1.4-2.4ISC-MOD. ISC-MOD refers to the short-circuit current of photovoltaic panels or photovoltaic strings under standard test conditions and is the specification value specified by the photovoltaic panel manufacturer on the product nameplate. It should be noted here that for some PV panels, the ISC-MOD is higher than the nominal value in the first few weeks or months of operation.
To protect the photovoltaic sub-array, the fuse should be installed at the position where the photovoltaic sub-array wire is connected to the photovoltaic array wire, such as the position of the photovoltaic connection box such as the photovoltaic array combiner box. The positive and negative situations should be installed, as shown in the following photovoltaic system diagram. The rated current of the fuse link should be in the range of 1.25-2.4ISC S-ARRAY, ISC S-ARRAY refers to the short-circuit current of the photovoltaic sub-array under standard test conditions, which is equal to n times the short-circuit current ISC-MOD of the photovoltaic string, n is the number of parallel PV strings in the sub-array.
For the protection of the entire photovoltaic array, the fuse should be installed at the connection position between the photovoltaic array wire and the application circuit wire, generally between the battery and the battery pack and the charge controller, and as close as possible to the battery position, as shown in the following photovoltaic system schematic.
The figure shows that it is used to protect the system and wires from the inflow of fault currents of photovoltaic arrays at other locations or other connected power sources, such as batteries or battery packs. If the rating of the fuse link is selected close to the lower limit, the photovoltaic array Both the wires and the charge controller provide protection. The PV array wires between the PV array and the charge controller do not need to be protected. Likewise, the positive and negative positions must be installed. The rated current of the fuse link at this position should be in the range of 1.25-2.4ISC ARRAY. ISC ARRAY refers to the short-circuit current of the photovoltaic array under standard test conditions, equal to N times the short-circuit current ISC-MOD of the photovoltaic string. N is the short-circuit current in the collection. The total number of PV strings is in parallel. There may be no corresponding fuse specifications for large-rated winds, and other overcurrent protection devices such as overcurrent protection relays are usually used.
Photovoltaic fuses provide excellent protection for solar power equipment.
Demand for Alternative Energy (New) With the development of technologically advanced solar panel systems, the need for high-quality fuses is increasing. The short-circuit condition of the solar panel cannot generate a large amount of current to activate the ordinary fuse. However, it can isolate the wrong photovoltaic current in time. Photovoltaic fuses (PV fuses) provide a full range of protection that traditional fuses cannot.
Photovoltaic fuses have the following superior properties:
1. Comprehensive protection: Photovoltaic fuses can effectively break down to 1.3×1(fuse rating)@1000Vdc. Especially suitable for thin-film batteries and 4", 5", 6" crystalline silicon panels.
2. Environmentally friendly and recyclable: Photovoltaic fuses fully consider the operation of the photovoltaic panel system and the environmental impact.
3. 1000Vdc capacity: Photovoltaic fuses are suitable for typical photovoltaic panel systems, the operating conditions can reach 1000Vdc, and the fusing response time is less than 1ms.
4.10×38mm international standard specification: suitable for various current ranges, there are standard metal ferrules, bolts, and multi-purpose circuit board mounting methods to choose from.
Fuse: Also known as fuse link, when the circuit fails or is abnormal, the current continues to increase, and the high wind may damage some critical components in the course or may burn the system, or even cause a fire after installing the fuse itself. The fuse cuts off the current and protects the safe operation of the circuit.
Fuse-links used in photovoltaic array protection shall meet the following requirements:
a. The rated voltage is greater than or equal to the maximum voltage corrected according to the expected minimum temperature of the installation site according to the photovoltaic panel manufacturer's instructions or the table above;
b. DC fuse link;
c. The rated breaking capacity is not lower than the fault current from the photovoltaic array and other connected power sources such as batteries, generators, and grids, if present;
d. Models that meet the IEC60269-6 standard are suitable for PV overcurrent and short circuit protection.
The fuse-link support used for photovoltaic array protection shall meet the following requirements:
a. The rated voltage is greater than or equal to the maximum voltage corrected according to the expected minimum temperature of the installation site according to the photovoltaic panel manufacturer's instructions or the table above;
b. The rated current is greater than or equal to the rated current of the corresponding fuse-link;
c. The protection level is suitable for the installation site and not lower than IP 2X.
Selection of rated current and safety position requirements of overcurrent protection fuse-links, etc.
To protect photovoltaic strings, VICFUSE photovoltaic fuses should be installed where the photovoltaic string wires are connected to the photovoltaic sub-array cables, such as the position of the photovoltaic combiner box such as the sub-array combiner box. In addition, the positive and negative plates must be installed, as shown in the following photovoltaic system. as shown in the figure. The rated current of the fuse link should be within the range of 1.4-2.4ISC-MOD. ISC-MOD refers to the short-circuit current of photovoltaic panels or photovoltaic strings under standard test conditions and is the specification value specified by the photovoltaic panel manufacturer on the product nameplate. It should be noted here that for some PV panels, the ISC-MOD is higher than the nominal value in the first few weeks or months of operation.
To protect the photovoltaic sub-array, the fuse should be installed at the position where the photovoltaic sub-array wire is connected to the photovoltaic array wire, such as the position of the photovoltaic connection box such as the photovoltaic array combiner box. The positive and negative situations should be installed, as shown in the following photovoltaic system diagram. The rated current of the fuse link should be in the range of 1.25-2.4ISC S-ARRAY, ISC S-ARRAY refers to the short-circuit current of the photovoltaic sub-array under standard test conditions, which is equal to n times the short-circuit current ISC-MOD of the photovoltaic string, n is the number of parallel PV strings in the sub-array.
For the protection of the entire photovoltaic array, the fuse should be installed at the connection position between the photovoltaic array wire and the application circuit wire, generally between the battery and the battery pack and the charge controller, and as close as possible to the battery position, as shown in the following photovoltaic system schematic.
The figure shows that it is used to protect the system and wires from the inflow of fault currents of photovoltaic arrays at other locations or other connected power sources, such as batteries or battery packs. If the rating of the fuse link is selected close to the lower limit, the photovoltaic array Both the wires and the charge controller provide protection. The PV array wires between the PV array and the charge controller do not need to be protected. Likewise, the positive and negative positions must be installed. The rated current of the fuse link at this position should be in the range of 1.25-2.4ISC ARRAY. ISC ARRAY refers to the short-circuit current of the photovoltaic array under standard test conditions, equal to N times the short-circuit current ISC-MOD of the photovoltaic string. N is the short-circuit current in the collection. The total number of PV strings is in parallel. There may be no corresponding fuse specifications for large-rated winds, and other overcurrent protection devices such as overcurrent protection relays are usually used.
Photovoltaic fuses provide excellent protection for solar power equipment.
Demand for Alternative Energy (New) With the development of technologically advanced solar panel systems, the need for high-quality fuses is increasing. The short-circuit condition of the solar panel cannot generate a large amount of current to activate the ordinary fuse. However, it can isolate the wrong photovoltaic current in time. Photovoltaic fuses (PV fuses) provide a full range of protection that traditional fuses cannot.
Photovoltaic fuses have the following superior properties:
1. Comprehensive protection: Photovoltaic fuses can effectively break down to 1.3×1(fuse rating)@1000Vdc. Especially suitable for thin-film batteries and 4", 5", 6" crystalline silicon panels.
2. Environmentally friendly and recyclable: Photovoltaic fuses fully consider the operation of the photovoltaic panel system and the environmental impact.
3. 1000Vdc capacity: Photovoltaic fuses are suitable for typical photovoltaic panel systems, the operating conditions can reach 1000Vdc, and the fusing response time is less than 1ms.
4.10×38mm international standard specification: suitable for various current ranges, there are standard metal ferrules, bolts, and multi-purpose circuit board mounting methods to choose from.