Product overview
Outdoor sealed jet type fuse is suitable for 10kV distribution network system, which can realize short circuit protection and overload protection of the line.As the melting tube and contact first part of the product are completely inside the ceramic insulator, the upper and lower outgoing lines are made of the injection molding of cables, forming the fully closed and fully insulated structure, which can prevent fog, freeze and corrosion, and protect all components, effectively prolong product life and reduce maintenance costs.Therefore, it has superior weather resistance and drink stability, and is free from environmental interference, which can greatly improve the system safety.Particularly applicable to stability requirements
Areas with extremely high natural environment and severe pollution.
Technical performance
1. The product adopts the fully closed integrated structure, which significantly improves the anti-pollution performance of the product and makes the product have good weather resistance.
2. The product adopts the whole design of full insulation, which enables the belt point components to be placed inside the insulator, thus significantly improving the safety of the product.
3. Ceramic insulators play the role of insulation and protection, making all components and components free from external interference, ensuring product reliability and greatly improving product life.
4. After the system over-current is broken, the molten tube pops up and the lower sealing cover falls down, which is easy to be identified as the obvious opening indicator.
5. The jet fuse has the load current opening and closing capacity, and can realize the load splitting operation through simple tools.
Project | Content |
Model | PRW-12/50-12.5 |
Rated voltage | 12kV |
Rated current | 50A |
Rated breaking current | 16kA |
Rated frequency | 50/60Hz |
Rated current of fused parts | 6A 10A 15A 20A 25A 30A 40A 50A |
Fuse link characteristics meet DL/T640-1997 requirement The same as type K |
insulation | Power frequency withstand voltage | relative | Dry flash | 42kV one minute |
Moist flash | 30kV one minute |
Fracture(No load fuse piece) | Dry flash | 48kV one minute |
Lightning impulse voltage | Relative | Dry flash | 75kV |
Fracture(No load fuse piece) | Dry flash | 85kV |
Rise in temperature | Lower than 35℃（use 50A fuse link） |
Mechanical stability | 300 |
Cut-off | Large current | 12kV/Sym16kA once(monomers,using 6A,50A fuse link) |
Low current | 12kV/16.2-19.8A twice(monomers, using 6A fuse link) |
Thermal stability current experiment | 1.000A/1sec once |
Current divides | No-load current | 12kV/630kVA connect the no-load current of the transformer 10th |
Charge current | 12kV/1A 10th |
Load current | 12kV | 50A 15th |
2.5A 15th |
65A 5th |
Tensile strength of insulated leads and terminals | 200N not fall off |
Security | 10kV 1minute Do not fall |
Boundary dimension | 65X58X16 |
Pollution grade | National standard grade 3 |
weight | Nearly 6kG/unit |