Drop out fuse is the most commonly used short-circuit protection switch for branch lines of distribution lines and distribution transformers. It has the characteristics of economy, easy operation, and strong adaptability to outdoor environments. It is widely used in 11kV distribution lines and the primary side of distribution transformers for protection and equipment switching operations. It is installed on the branch line of a 11kV distribution line, which can reduce the range of power outages. Due to its obvious disconnection point, it has the function of an isolation switch, creating a safe working environment for the maintenance section lines and equipment, and increasing the sense of security of maintenance personnel. Installed on distribution transformers, it can serve as the main protection for distribution transformers, so it has become popular in distribution lines and distribution transformers.
Product Detail
Generally, fuse cut-out contains following parts: (1) Insulator; (2) Metal parts; (3) Fuse tube; (4) Fuse element (link).Connected with incoming feeder of distribution transformer or distribution lines, high-voltage drop-out fuse cut-out mainly protect transformer or lines form short circuit and overhead, and on/off loading current. Cut out fuse is composed of insulators and fuse tube/carrier. Static contacts are fixed on two sides of insulator support while moving contacts are installed on two ends of fuse tube/carrier. Fuse tube/carrier is composed of inner arc-extinguishing tube, outer phenolic compound paper tube or epoxy glass tube.
Product Parameters
| 型号 | 额定电压Rated voltage | 额定电流Rated current | 开断电流Current interruption | 冲击电压Impulse voltage | 工频耐压Power frequency withstand voltage |
| HRW12-11/100 | 11kV | 100A | 6.3kA | 110kV | 42kV |
| HRW12-11/200 | 11kV | 200A | 8kA | 110kV | 42kV |
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