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RW11-12
DGG
The drop out fuse cutout consists of two main parts: an insulation bracket (base) and a fuse tube (arc extinguishing device). The static contact is installed at both ends of the insulation bracket, and the moving contact is installed at both ends of the fuse tube.
The fuse tube consists of an inner arc extinguishing tube and an outer layer of phenolic straight tube or epoxy glass cloth tube.
When a drop out fuse operates normally, the fuse tube is tensioned by the fuse to form a closed position. When the system malfunctions, the fault current causes the fuse to quickly melt and form an arc. The arc extinguishing tube decomposes a large amount of gas under the scorching heat of the arc, creating high pressure inside the tube and forming a longitudinal blow along the pipeline. The arc is quickly elongated and extinguished. After the fuse is blown, the lower moving contact loses tension and flips down. The locking mechanism releases the fuse tube, causing it to fall and form a clear breaking position.
In addition, the usage conditions of drop out fuses include specific conditions such as ambient temperature range, altitude limitations, and not suitable for places with fuel or explosion hazards. With the development of technology, drop out fuses have gradually achieved remote control and computer management, improving the safety and efficiency of operation
The drop out fuse cutout consists of two main parts: an insulation bracket (base) and a fuse tube (arc extinguishing device). The static contact is installed at both ends of the insulation bracket, and the moving contact is installed at both ends of the fuse tube.
The fuse tube consists of an inner arc extinguishing tube and an outer layer of phenolic straight tube or epoxy glass cloth tube.
When a drop out fuse operates normally, the fuse tube is tensioned by the fuse to form a closed position. When the system malfunctions, the fault current causes the fuse to quickly melt and form an arc. The arc extinguishing tube decomposes a large amount of gas under the scorching heat of the arc, creating high pressure inside the tube and forming a longitudinal blow along the pipeline. The arc is quickly elongated and extinguished. After the fuse is blown, the lower moving contact loses tension and flips down. The locking mechanism releases the fuse tube, causing it to fall and form a clear breaking position.
In addition, the usage conditions of drop out fuses include specific conditions such as ambient temperature range, altitude limitations, and not suitable for places with fuel or explosion hazards. With the development of technology, drop out fuses have gradually achieved remote control and computer management, improving the safety and efficiency of operation
Electrical characteristics | Specification | Unit |
Voltage | 15~27 | KV |
Current | 100/200/300/400 | A |
Frequency | 50/60 | Hz |
Power frequency withstand voltage to earth (1 min) | 45 | KV |
Power frequency withstand voltage phase to phase (1 min) | 50 | KV |
Impulse voltage to earth | 110 | KV |
Impulse voltage phase to phase | 125 | KV |
Breaking current | 8 | KA |
Creepage distance: | 620 | mm |
Spare parts | ||
Mounting bracket | with/without | |
Arc shortening rod | with/without | |
Arc distinguish chamber | with/without | |
Fuse link | According to customer needs | |
Material: | According to customer needs | |
Copper content for brass | Brass (60~60%) | |
Conductive parts material | Copper with silver plated/Copper with tin plate | |
Insulator | Porcelain/Polymer | |
Fuse tube | Fiber glass | |
Package | 25*15*12CM | |
Qty/package | 1 | pc/carton |
Service conditions | Suitable for ambient air with no conductive dust, no corrosive gases, and flammable and explosive materials | |
Environment maximum temperature | 40 | ºC |
Pollution level | II | |
Altitude | ≤1000 | Meter |
Standard | IEC60282-2 |
Electrical characteristics | Specification | Unit |
Voltage | 15~27 | KV |
Current | 100/200/300/400 | A |
Frequency | 50/60 | Hz |
Power frequency withstand voltage to earth (1 min) | 45 | KV |
Power frequency withstand voltage phase to phase (1 min) | 50 | KV |
Impulse voltage to earth | 110 | KV |
Impulse voltage phase to phase | 125 | KV |
Breaking current | 8 | KA |
Creepage distance: | 620 | mm |
Spare parts | ||
Mounting bracket | with/without | |
Arc shortening rod | with/without | |
Arc distinguish chamber | with/without | |
Fuse link | According to customer needs | |
Material: | According to customer needs | |
Copper content for brass | Brass (60~60%) | |
Conductive parts material | Copper with silver plated/Copper with tin plate | |
Insulator | Porcelain/Polymer | |
Fuse tube | Fiber glass | |
Package | 25*15*12CM | |
Qty/package | 1 | pc/carton |
Service conditions | Suitable for ambient air with no conductive dust, no corrosive gases, and flammable and explosive materials | |
Environment maximum temperature | 40 | ºC |
Pollution level | II | |
Altitude | ≤1000 | Meter |
Standard | IEC60282-2 |
1. The ambient temperature shall not be higher than+40 degrees and not lower than -40 degrees;
2. The altitude shall not exceed 1000m;
3. The maximum wind speed shall not exceed 35m/s;
4. The earthquake intensity shall not exceed 8 degrees.
5. The product is not suitable for the following locations: places with combustion or explosion hazards; Places with severe vibrations or impacts; Areas with conductivity, chemical gas interactions, and severe salt spray pollution.
1. The ambient temperature shall not be higher than+40 degrees and not lower than -40 degrees;
2. The altitude shall not exceed 1000m;
3. The maximum wind speed shall not exceed 35m/s;
4. The earthquake intensity shall not exceed 8 degrees.
5. The product is not suitable for the following locations: places with combustion or explosion hazards; Places with severe vibrations or impacts; Areas with conductivity, chemical gas interactions, and severe salt spray pollution.
(1) During installation, the melt should be tightened (causing a tensile force of approximately 24.5N on the melt), otherwise it is easy to cause the contact to heat up.
(2) The fuse installed on the crossbar (frame) should be firm and reliable, without any shaking or shaking phenomenon.
(3) The melting tube should have a downward inclination angle of 25 °± 2 ° to facilitate the rapid drop of the melting tube by its own weight when the melt melts.
(4) The fuse should be installed on a cross arm (frame) with a vertical distance of not less than 4m from the ground. If installed above the distribution transformer, it should maintain a horizontal distance of at least 0.5m from the outermost contour boundary of the distribution transformer to prevent other accidents caused by the fuse falling off.
(5) The length of the melting tube should be adjusted appropriately, and it is required that the duckbill tongue can hold more than two-thirds of the length of the contact after closing to avoid accidental dropping during operation. The melting tube should not be pushed to the death of the duckbill to prevent the melting tube from falling in time after melting.
(6) The melt used must be a standard product from a legitimate manufacturer and have a certain mechanical strength. Generally, the melt is required to withstand a minimum tensile force of 147N or more.
(7) 10kV drop out fuses are installed outdoors, with a requirement for a phase to phase distance greater than 70cm.
(1) During installation, the melt should be tightened (causing a tensile force of approximately 24.5N on the melt), otherwise it is easy to cause the contact to heat up.
(2) The fuse installed on the crossbar (frame) should be firm and reliable, without any shaking or shaking phenomenon.
(3) The melting tube should have a downward inclination angle of 25 °± 2 ° to facilitate the rapid drop of the melting tube by its own weight when the melt melts.
(4) The fuse should be installed on a cross arm (frame) with a vertical distance of not less than 4m from the ground. If installed above the distribution transformer, it should maintain a horizontal distance of at least 0.5m from the outermost contour boundary of the distribution transformer to prevent other accidents caused by the fuse falling off.
(5) The length of the melting tube should be adjusted appropriately, and it is required that the duckbill tongue can hold more than two-thirds of the length of the contact after closing to avoid accidental dropping during operation. The melting tube should not be pushed to the death of the duckbill to prevent the melting tube from falling in time after melting.
(6) The melt used must be a standard product from a legitimate manufacturer and have a certain mechanical strength. Generally, the melt is required to withstand a minimum tensile force of 147N or more.
(7) 10kV drop out fuses are installed outdoors, with a requirement for a phase to phase distance greater than 70cm.