Dropout Fuse Cutout
Introduction
Dropout Fuse Cutout is a kind of outdoor used high voltage protective device. To be connected with incoming feeder of distribution transformer or distribution line it mainly protect transformer or lines from short circuit and overload and on/off loading current.
Dropout Fuse 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 extinguishing tubeouter phenolic compound paper tube or epoxy glass tube.Load switching fuse cutout provides enforced elastic auxiliary contacts and arc-extinguishing enclosure for switching on/off loading current. At normally working via fuse link 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 explode a lot of gas. This will produce high pressure and blow off the arc along with tube.
After fuse link 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 shallvia insulating operating bar pull the moving contactat its beginning main contact and auxiliary static contactis 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 meanwhilearc-extinguishingexplode gas to blow off the arc during current passing zero.
Material: Silicone rubber or Porcelain.
ManufacturingStandard:IEC60282-2
Usage: high voltage
Breaking capacity: high
Safety standards: IEC
Installation: open frame
Markets: global
Packing: export carton or as customized
| Model No. |
Rated Voltage/KV |
Rated Current/ A |
Breaking Capacity MVA |
Power Frequency Withstand Voltage- Dry/ kvrms 1 min |
Power Frequency Withstand Voltage- Wet/ kvrms 1 min |
| Upper limit |
Lower limit |
| RW3-10/100 |
10 |
100 |
100 |
10 |
42 |
34 |
| RW3-10/200 |
10 |
200 |
200 |
20 |
42 |
34 |
Audited Supplier 
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