High Quality Factory Direct Sale 33kv High Voltage Outdoor Drop out Fuse Cutouts

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: HRW-33/200
• Speed: High-Speed Circuit Breaker
• Installation: Insert
• Poles Number: 1
• Type: Fuse Cutout
• Function: Conventional Circuit Breaker
• Certification: ISO9001-2000
• Transport Package: Standard Export Package
• Specification: ISO9001: 2008
• Trademark: L&R or according to customers requirements
• Origin: Wenzhou, Zhejiang, China
• Production Capacity: 1000 Piece/Pieces Per Month

Product Description

Specifications

Place of Origin:Zhejiang, China (Mainland)
Brand Name:L&R
Model Number:HRW-33
Usage:High Voltage
Breaking Capacity:High
Safety Standards:IEC
Rated voltage:33kv
Rated current:100/200A
Product name:high-voltage drop out fuse
Item:Electrical Fuse Types
Mechanical life:2000times

Packaging & Delivery

Packaging Details:1 SET DROP OUT FUSE/WOODEN CARTON
Delivery Detail:3-5 days for small amount,10-20 days for large amount
Product Description
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 tube,
outer 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
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.


Material: Silicone rubber or Porcelain

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

Quality Construction

Efficient Current Transfer

The cutout has an all copper single piece current path with Silver-plated contacts. Terminals are tin-plated brass for use with copper or aluminum conductor.
Hooks

Galvanized steel hooks are standard on all cutouts, for use with a portable tool. The hooks are mounted under the top contact and serve as a guide for the fuse holder when closing at an off centre angle.
Top Contact

The top contact is designed such that it provides a smooth self aligning action during closing; the top contact is formed from highly conductive copper and is silver-plated, which provides a continuous current path from dome nut to PG clamp.
The contact is designed to maintain firm and constant pressure with the fuse holder contact surface until fault interruption is accomplished. Backing the top contact is the Loadbreak bracket, which prevents over-racking. Used in conjunction with a load break tool of the correct rating, the cutout can be opened under load.
Hinge

The hinge on the cutouts employs a large pivot area for the fuse holder's trunnion and is manufactured from brass for its strength and superior electrical properties. The hinge contacts are of a highly conductive copper alloy and silver-plated to ensure an efficient current transfer from the trunnion casting.
Insulator (Silicone)

The advantages of HTV silicone are numerous, namely, 1. Silicone is the only housing materials that are able to transfer their intrinsic hydrophobic behavior to pollution layers. Therefore, leakage currents are suppressed and the risk of flashover is reduced. Moreover, composite insulators with silicone housings do not require cleaning.
Some other polymers such as EPDM or some special Cycloaliphatics are also hydrophobic but not able to coat the pollution layers deposited on the housing surface. 2. High tensile strength to weight ratio. 3. Improved performance in highly polluted areas. 4. An unattractive target for vandals and very resistant to project damage. 5. Flexibility, providing better seismic capabilities and preventing cascade failure of post units. 6. High resistance to UV degradation. 7. High resistance to thermal extremes (-35oC to +50oC)

Insulator (Porcelain)

These insulators of sky-glazed grey porcelain, with leakage distances range from 230mm720mm, with BIL ratings of 110kV-170kV.
Terminals

Tin plated copper alloy parallel groove type terminals are standard on all cutouts. They can accommodate aluminum or copper conductor. The parallel groove terminal is designed to accommodate two different size conductors, as is the case when arrestors are being used. Eyebolt and Lug mount options are also available.

Fuse Holder

The solid cap on the single vent fuse holder is made of silver- plated brass, which provides efficient current transfer.
An integral ring is provided in the top tube casting for opening and closing the fuse holder using conventional disconnect tools from the ground, from a bucket truck or from a cherry picker.
The toggle type trunnion casting is of silver-plated brass for efficient current transfer to the lower hinge contacts. Cams on the trunnion ensure high-pressure current path to the lower contacts. The pivot bosses are cast full round for smooth rotational operation in the hinge but prevent the trunnion from disengaging when closing the fuse tube. The spring operated link ejector assists with clearing low-level fault currents. A groove in the centre of the link ejector guides the fuse tail directly from the fuse tube to the attachment nut. Radii on the link ejector minimise the bending stress on the fuse tail to prevent strands breaking. The link is pinned to the trunnion with a brass pin to provide resistance to corrosive elements and assure smooth pivotal action. An interlocking device between link and bottom tube casting prevents excessive tension on the fuse link during closure, which could cause link breakage during closure.
The link employs an impact effect to ensure toggle action of the trunnion during low fault and overload interruptions. Dropout action is assured. The link provides sufficient surface area to facilitate re-fusing by a linesman wearing gloves.
Fuse Tube

The inside diameter of the fuse tube increases the internal pressure, giving superior and reliable expulsion action. During frequently encountered intermediate fault ranges, this diameter also permits higher TRV, (Transient Recovery Voltage), values to be tolerated. The liner is constructed of an arc quenching material. The tube is manufactured from fiberglass, which permits a smaller bore and provides higher burst strength.It is protected from the weather and environment by an ultra violet resistant coating.
Brackets

All mounting brackets are manufactured from steel to international standards and are hot dip galvanized. Stainless steel options are available on request.
Higher interrupt capacities

By using a copper arc-shortening rod attached to the dome nut inside the top of the fuse tube, lowering the fuse link, higher interrupt ratings are obtainable. It is necessary to use fuse links with removable button heads when using an arc-shortening rod.
Creepage distance

Cutouts are available for use under various pollution conditions. Units are available in 245mm to 870mm, other creepage distance are available on request.
Extra Corrosion protection

All cutouts are available with components made from stainless steel and plated copper alloy, to offer greater corrosion resistance for severely aggressive environments where corrosion can become a major factor.