HPRWG1-12F Outdoor Drop Fuse

HPRWG1-12F outdoor drop fuse  the characteristic is that during normal operation, the fuse tube forms a closed position after being tensioned by the fuse. When the system fails, the fuse is quickly blown and an arc is formed when the fault current is present. The arc suppression tube is heated by the arc, and a large amount of gas is decomposed. A high pressure is formed in the embassy, and vertical blowing is formed along the pipeline, and the arc is quickly elongated. and extinguished. After the fuse is blown, the lower moving contact loses tension and flips down, locks the machine, releases the fuse tube, and the fuse tube falls down, forming an obvious breaking position. When the load needs to be pulled, use the insulating rod to pull open the moving contacts, at this time the active and static contacts are still in contact, continue to use the insulating rod to pull the contacts, the auxiliary contacts are also separated, and an arc is generated between the auxiliary contacts. It is elongated in the quenching slit, and the arc quenching hood generates gas at the same time, and when the current crosses zero, the arc is extinguished.

Our HPRWG1-12F outdoor drop fuse with arc extinguishing device, it can safely cut off the load current and can be used as an outdoor load switch. It has excellent fault current breaking capacity, large breaking capacity and long trouble-free running time. The installation metal rod is an embedded structure, the insulator has a large creepage distance, high strength, not easy to break, smooth surface and strong self-cleaning ability. The moisture-proof melting tube does not absorb moisture, does not deform, has a large breaking capacity, is resistant to ultraviolet rays, and has a long service life. The product has a high degree of standardization, the overall mechanism has good neutrality, is easy to install, and is safe and reliable.

Model Description

R:Fuse

W:Outdoor

▢:Design Number

▢:Rated voltage kV

▢:Design number

Working Environment：

◆The altitude does not exceed 1000m;

◆Ambient temperature: -35C +40C;

◆Relative humidity: the daily average is not more than 95%, and the monthly average is not more than 90%;

◆Installation site: no fire, explosion hazard, chemical corrosive gas and well-ventilated place, The angle of inclination is not more than 30.

Note: When the above normal use conditions are exceeded, the user can negotiate with the company.

The Function Of Drop-Out Fuse

Drop-out fuses are outdoor high-voltage protection appliances. Power fuses are installed on the high-voltage side of distribution transformers or on branch lines of distribution lines for overload and short-circuit protection of transmission lines and power transformers, as well as for switching rated load current. According to the fuse The maximum breaking current should not be less than the maximum short-circuit current of the protected electrical circuit; the minimum melting current should not be greater than the minimum short-circuit current of the protected circuit. When installing the fuse, all zeros should be fastened. It can prevent the contact part from overheating during normal operation. For the three-phase installed fuses, even if one of the fuses operates, the other two should be replaced, because although the other two are not damaged, they are close to the operating point and have reached the vulnerable point. degree.

Main Technical Parameters

Structure And Mounting Dimensions