Wind power dedicated fuse (H) PRWG2-35/200A

Main technical parameters:
1. Rated voltage: 40.5 (KV)
2. Rated working current: 200 (A)
3. Dynamic stability current (peak value): 80; 120(KA)
4. Thermal stability current (peak value): 6.3; 16(KA)
5. Thermal stability time: 4 (S)
Terms of Use
1. Environmental temperature: -45 ℃ to 55 ℃;
2. Altitude not exceeding 3000m;
3. Wind speed not exceeding 50m/s;
4. The seismic intensity shall not exceed 8 degrees;
5. Fuses are not suitable for the following locations: places with combustion or explosion hazards;

6. This product is a high prototype, anti fouling product:

This product is uniquely designed to meet national technical standards and has innovative and practical functions.

1. This product uses synthetic silicone rubber material as the insulator, and the central material uses an insulating pull rod.

2. The switch contacts are made of steel parts, phosphor bronze materials, and stainless steel materials.

3. All standard connecting parts are made of stainless steel (304 material)

4. The switch action part consists of die cast copper parts and fiberglass wrapped tubes.

5. The upper moving contact of the melting tube is designed as a double contact combination, and the lower moving contact is designed as a flip contact.

6. The insulation connection part is a precision cast steel component, with a center bracket thickness of 12 millimeters. Effectively avoiding external forces from affecting the overall changes of the switch.

7. The static contact on this product is a dual contact surface, with the first part being a pressure contact method, and the second part being a card and contact method.

8. The lower static contact is a copper die-casting contact.

Model experiment standard description:
The product performance complies with the national standard GB15166.3-2008 and the international standard IEC282-2. This product has excellent electrical and mechanical performance, and has fully met the requirements of GB1985-2004 and its first revision, as well as IEC694. It also meets the GB/15166.3-2008 standard for jet fuses. It is an updated product of the current 40.5KV outdoor isolation switch and fuse. Its product has dual functions.

disconnecting switch+Introduction to Fuse Combination Structure:
The combination of isolation switch and fuse consists of two main parts: insulation bracket and fuse tube. The static contact is installed at both ends of the insulation bracket, and the upper moving contact (composed of double contacts) and the lower contact are installed at both ends of the fuse tube. The fuse tube consists of an inner arc extinguishing tube and an outer epoxy glass fiber tube. When pulling the load isolation switch and fuse, there are elastic auxiliary contacts used to open and close the load current. When the isolation switch and fuse are in normal operation, 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 is heated by the arc and decomposes a large amount of gas, 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 upper moving contact (double contact) and the next contact mechanism release the fuse tube, causing the fuse tube to fall and form a clear breaking position. At this time, the static contact and the first moving contact are still in contact. If replacement is needed, use an insulating rod to pull down the upper first moving contact, and at the same time, remove the fuse tube and install the fuse (connect the lower moving contact through the fuse tube by passing through the fuse between the first and second moving contacts). The auxiliary contacts also separate, generating an arc between them. The arc is elongated in the narrow slot of the arc extinguishing cover, while gas is generated. When the current crosses zero, the arc is extinguished.
When it is necessary to disconnect, use an insulating rod to pull open the upper moving contact (either pull ring of the double contact), and a clear fracture can be seen. Convenient for maintenance and repair.