Drop-out Fused Cut out and Load Switching Fuse Cutout
Drop-out Fused Cut out and Load Switching Fuse Cutout image
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DROP OUT FUSE CUTOUT SERIES
Drop-out fused cut out and load Switching fuse cutout are of outdoor used high voltage protective device.To be connected with incoming feeder of distribution line, it mainly protect transformer or lines from short circuit and overload,and on/off loading current.
Drop-out fused cutout is composed of insulator supports and fuse tube, static contacts is fixed on two sides of insulator support and moving contact is installed on two ends of fuse tube . Fuse tube is composed of inside arc-estinguishing tube, outer phenolic compound paper tube or expoxy glass tube.
Load switching fuse cutout provides enforced elastic auxiliary contacts and arc-extinguishing enclosure for switching on/off loading current. At normal working via fuselink tightened the fuse tube is fixed to form up of close position.
In case system occur faults, fault current result in fuse melt immediately and take place electric arc, which let arc-extinguishing tube being heated and ex-plode a lot of gas. This will produce high pressure and blow off the arc along with tube.
After fuselink melt moving contact has no tightened strength again, mechanism is locked and fuse tube dropout. Cutout now is in open position.When it needs to switch off during cut out loading. operator shall via insulating operating bar pull the moving contact, at its beginning main contact and auxiliary static contact is contacted still. Whiling pulling the auxiliary contact is separated between auxiliary contacts there occur electric arc and the arc will be lengthened in arc-extinguishing enclosure gap and meanwhile arc- extinguishing explode gas to blow off the arc during current passing zero
No. | Type |
Rated voltage (kV) |
Rated current (A) |
Breaking current (A) |
Impulse voltage (BIL) |
Power-frequency with stand voltage (KV) |
Leakage distance (MM) |
Weight(KG) | Dimensions (CM) |
1 | (H)RW11 | 10(F) | 100(200) | 6300 | 110 | 42 | 260 | 7.5 | 48x32x27 |
2 | (H)RW10 | 10(F) | 100(200) | 8000 | 110 | 42 | 260 | 9.5 |
No. | Type |
Rated voltage (kV) |
Rated current (A) |
Breaking current (A) |
Impulse voltage (BIL) |
Power-frequency with stand voltage (KV) |
Leakage distance (MM) |
Weight(KG) | Dimensions (CM) |
1 | GWNCX1 | 12 | 100 | 6300 | 125 | 42 | 260 | 7.5 | 58x32x11.5 |
2 | GWNCX2 | 12 | 200 | 12500 | 125 | 42 | 260 | 7.5 |
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Tags: Drop-out Fused Cutout, Fuse Cutout, Fused Cutout, powtech