China Promotion 11kv High Voltage Outdoor Expulsion Dropout Fuse Cutout, Find details about China Fuse Cutout, Fuse Cutout 15kv from Promotion 11kv High Voltage Outdoor Expulsion Dropout Fuse Cutout
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Drop-out fuse cutout
Description:
Drop-out fuse cutout and load switching fuse cutouts are outdoor high voltage protection devices. They are connected with the incoming feeder of the distribution transformer or distribution lines. These are primarily used to protect transformers or lines from short circuits and overloads and switching currents. The drop-out fuse unit is composed of insulator supports and a fuse tube, static contacts are fixed on two sides of the insulator support and moving contact is installed on two ends of fuse tube. The interior of the fuse tube is the extinguishing tube. the exterior is made of the phenolic compound paper tube or epoxy glass. Load switching cutout fuse provides stretch auxiliary contacts and arc-extinguish exclosure for switching on/off loading current.
In normal operation, the fuse link is tightened to form tho closed position. In the fault current situation, the fuse link melts and an electrical arc is formed. The arc-extinguishing tube is as occurs. This causes high pressure inside the tube and causes the tube to separate from the contacts. The strength of the contact is relaxed once the fuse elements melt. The cutouts now in the open position, the operator needs to switch the current off. Then with an insulated operating bar, the moving contact can be pulled off. The main contact and auxiliary contact is connected.
| Project | RW12 | RW12 |
| Rated voltage (kV) | 12(15) | 12(15) |
| Rated current (A) | 100 | 200 |
| Rated frequency (Hz) | 50 | 50 |
| Base rated current (A) | 100 | 200 |
| Rated short-circuit breaking current (kA/A) | 8/100, 12.5/100, 16/100 | 12.5/200, 16/200 |
| Power frequency withstand voltage test (kV) | 45/55 | 45/55 |
| Power frequency withstand voltage dry test (kV) | 50/55 | 50/55 |
| Rated lightning impulse voltage (kV) | 125 | 125 |
| Creepage distance (mm/kV) | 330 | 330 |
| Mechanical life (times) | 500 | 500 |
| Altitude (mm) | 1000 | 1000 |
| Ambient temperature (ºC) | -40ºC~+70ºC | -40ºC~+70ºC |
| Dimensions (cm) | 50x36x12.5 | 50x36x12.5 |
| 1.Ambient temperature: no higher than +40ºC, not lower than-30ºC |
| 2.Altitude: no more than 1000m: (more than 1000m can be corrected according to GB311.1-1997) |
| 3.Power frequency: 50Hz |
| 4.Earthquake intensity: 7 degrees and below |
| 5.Maximum wind speed: 35m/s |
Zhejiang ZheGui Electric Co., Ltd established in 2013. We are located in Zhejiang with convenient transportation access and developed electrical market. We are group of private enterprises that hold the production license issued by the former ministry of energy and ministry mechanical and electrical engineering.
The company has nearly 60 million fixed assets and more than 60 employees, covering 23133 square meters. We are specialized in R&D production of complete switchgear of high and low voltage equipment such as prefabricated substation, distribution cabinet/box, drawer cabinet, ring network cabinet, inflatable cabinet, etc.
We own three CNC bending machines, CNC shearing machines, CNC laser cutting machines and a series of advanced production equipment to further optimized the product structure and improve the efficiency of production. After nearly 7 years of development, it has passed ISO 9001-2000 quality system certification. All items produced by our own factory, so our advantages are: reliable quality and reasonable price. Gather the world's energy to delight your business. It's honorable for Zhegui to share your progress, brilliance and success!