Dropout Fuse Cutout

Category： Power fitting
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Technical parameter

Introduction

Dropout Fuse Cutout is a kind of outdoor used high voltage protectivedevice. To be connected with incoming feeder of distributiontransformer or distribution line it mainly protect transformer or lines fromshort circuit and overload, and on/off loading current.

Dropout Fuse Cutout is composed of insulator supports and fuse tubestatic contacts is fixed on two sides of insulator support and movingcontact is installed on two ends of fuse tube. Fuse tube is composed ofinside extinguishing tube,outer phenolic compound paper tube orepoxy glass tube.Load switching fuse cutout provides enforced elasticauxiliary contacts and arc-extinguishing enclosure for switching on/offloading current. At normally working via fuse link tightened the fusetube is fixed to form up of close position. In case system occur faultsfault current result in fuse melt immediately and take place electric arc.which let arc-extinguishing tube being heated and explode a lot of gasThis 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 openposition.

When it needs to switch off during cut out loading. Operator shall viainsulating operating bar pull the moving contact, at its beginning maincontact and auxiliary static contactis contacted still.

Whiling pulling the auxiliary contact is separated between auxiliarycontacts there occur electric arc and the arc will be lengthened in arc-extinguishing enclosure gap and meanwhile arc-extinguishing explodegas to blow off the arc during current passing zero.

Material:Silicone rubber or Porcelain

Manufacturing Standard:lEC 60282-2

Technical details
Type model	Rated voltage(kV)	Rated current(A)	Breaking current(kA)	Impulse voltage BIL (kV)	Power frequency withstand voltage (kV)	Leakage distance(mm/kV)	Material
(H)RW-11/100	11	100	6.3	100	35	25-31	Polymer/Porcelain
(H)RW-11/200	11	200	10.0	100	35	25-31	Polymer/Porcelain
(H)RW-11/400	11	400	12.5	100	35	25-31	Polymer/Porcelain
(H)RW-12/100	12	100	6.3	110	40	25-31	Polymer/Porcelain
(H)RW-12/200	12	200	10.0	110	40	25-31	Polymer/Porcelain
(H)RW-15/100	15	100	6.3	125	45	25-31	Polymer/Porcelain
(H)RW-15/200	15	200	10.0	125	45	25-31	Polymer/Porcelain
(H)RW-18/100	18	100	6.3	130	50	25-31	Polymer/Porcelain
(H)RW-18/200	18	200	10.0	130	50	25-31	Polymer/Porcelain
(H)RW-21/100	21	100	6.3	140	58	25-31	Polymer/Porcelain
(H)RW-21/200	21	200	10.0	140	58	25-31	Polymer/Porcelain
(H)RW-24/100	24	100	6.3	150	65	25-31	Polymer/Porcelain
(H)RW-24/200	24	200	10.0	150	65	25-31	Polymer/Porcelain
(H)RW-27/100	27	100	6.3	160	68	25-31	Polymer/Porcelain
(H)RW-27/200	27	200	10.0	160	68	25-31	Polymer/Porcelain
(H)RW-30/100	30	100	6.3	170	70	25-31	Polymer/Porcelain
(H)RW-30/200	30	200	10.0	170	70	25-31	Polymer/Porcelain
(H)RW-33/100	33	100	6.3	175	75	25-31	Polymer/Porcelain
(H)RW-33/200	33	200	10.0	175	75	25-31	Polymer/Porcelain
(H)RW-33/400	33	400	12.5	175	75	25-31	Polymer/Porcelain
(H)RW-36/100	36	100	6.3	180	80	25-31	Polymer/Porcelain
(H)RW-36/200	36	200	10.0	180	80	25-31	Polymer/Porcelain

Aspect	BS (British Standards)	IEC (International Standards)	AS/NZS (Australian/New Zealand Standards)	US Standards (ANSI/IEEE/NEMA)	GB (Chinese National Standards)
Voltage Range	Typically up to 36 kV	Up to 52 kV	Up to 36 kV	Up to 46 kV	Up to 40.5 kV
Material Specifications	Specifies materials for durability, insulation, and safety (e.g., porcelain, polymer)	General material guidelines for global use	Similar to IEC with local adaptations	Detailed material specs for US market (e.g., ANSI C37)	Follows IEC with local modifications (e.g., GB/T 15166)
Electrical Requirements	Focus on insulation, dielectric strength, and electrical performance (e.g., BS EN 60282)	Comprehensive electrical performance standards (e.g., IEC 60282)	Aligns with IEC but includes local electrical codes	Stringent electrical performance protocols (e.g., ANSI C37, IEEE standards)	Strong focus on electrical performance and compliance (e.g., GB/T 15166)
Mechanical Requirements	High emphasis on mechanical strength and load-bearing capacity (e.g., BS 2692)	General mechanical performance guidelines (e.g., IEC 60282)	Specific to local conditions (e.g., wind load, seismic requirements)	Rigorous mechanical standards (e.g., ANSI C37)	Similar to IEC with additional local requirements
Testing Requirements	Includes type, routine, and sample tests (e.g., BS EN 60282)	Comprehensive testing for safety and performance (e.g., IEC 60282)	Aligns with IEC but includes local conditions	Rigorous testing for safety and reliability (e.g., ANSI C37, IEEE standards)	Similar to IEC with additional local tests
Application Guidelines	Detailed installation and usage guidelines (e.g., BS 7671 Wiring Regulations)	Broad guidelines for international applicability	Specific to Australian and New Zealand conditions (e.g., AS/NZS 3000)	Focused on US electrical systems (e.g., NEC, NEMA)	Tailored to Chinese electrical systems (e.g., GB/T 5023)
Safety Standards	High emphasis on safety and reliability (e.g., BS EN 60282)	Global safety standards (e.g., IEC 60282)	High safety standards with local regulations	Stringent safety protocols (e.g., ANSI C37, IEEE standards)	Strong focus on safety and compliance (e.g., GB/T 15166)
Certification	Kitemark certification	CB Scheme for international certification	Local certification bodies (e.g., SAI Global)	UL, CSA, and other US certifications	CCC (China Compulsory Certification)

Tags: 11kv drop out fuse 33kv drop out fuse drop out fuse 22kv drop out fuse application

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