Fuse Cutout
Structural components and advantages of SSOC type drop type fuses.
1. The overall structure of SSOCo-12/200-16 series fuses is rigorously and reasonably designed, with well-designed materials, rigorous assembly process, stable and reliable fitment of all parts, and flexible operation. This not only guarantees the reliability of the product operation, but also ensures that the operator can work easily and conveniently.
2. The fused tubes of SSOC (NCP) series fuses have high breaking capacity, excellent electrical characteristics and insulation strength, as well as excellent mechanical rigidity and self-cleaning ability. The outer surface is made of Devthane 389, which is resistant to moisture, corrosion and ultraviolet rays, and can effectively prolong the service life. Adoption of double-end step-by-step air venting structure enhances short-circuit and current disconnection capability, solving the problem of short-circuit and current disconnection.
Adopting double-end step-by-step air venting structure enhances the short-circuit current disconnecting capability and solves the problem of disconnecting large and small short-circuit fault currents separately.
3. The parts of SSOC (NCP) series fuses are made of high quality materials and mature and stable hot zinc plating technology. The insulating posts are bird-proof type insulators using high-quality electrical and silicone rubber insulation materials with a wide service distance to suit different environments. The optimized structural design effectively prevents birds from falling on the insulating posts. The mounting inserts are bonded to the insulators with a unique inorganic adhesive that does not expand and can withstand the electric forces generated by strong fault currents and the impacts of line operators when closing. The conductive parts are made of pure copper and highly resilient conductive copper alloys, and the top and bottom fixings are of solid cast copper construction, providing an integrated structure to resist the effects of shaking, bouncing, or unraveling caused by large impacts during operation. The parts are corrosion-proofed by hot-dip zinc plating process. Stainless steel is used for those parts where hot-dip zinc plating cannot guarantee the rotation required by the fit requirements.
4. The base of SSOC (NCF) series fuses consists of a drop-in mechanical structure and insulators. The metal rods of the mounting mechanism are specially bonded to the insulators and blown up to withstand the electromotive force generated by the short-circuit breaking current. The whole mechanism of the product is well centered, easy to install, safe and reliable.
5. SSOC (NCP) series fuses has superb mechanical performance and fault breaking capacity. Used in conjunction with fusible links, they can provide full-range fault protection for transformers, capacitors, cables and circuits in the distribution system, with simple and easy installation and removal of fuses, reliable stripping action, regardless of the fault current level; and have a short-circuit fault-breaking capacity of 16 kA.
AIISSOC series of products meet or exceed the regulations of following standards
Temperature, ambient: - 45°C —+ 55°C
altitude no more than 1000m
wind pressure no more than 700 pa (equal to 34m/s wind speed)
Air pollution level no more than IV degree.
IEC 282.1 IEC787
ANS1C37.41- 94 ANS1C37.42 - 94
GB1T15166.1 - 4-94 GB 311. 1-97
DL1T640 -97 DL1593 -96
The purpose to use cutout is to provide protection to the lines of power supply system and the various apparatus ant those lines such as transformers and capacitor banks. The provide reliable protection from low-level overloads that just melt the fusible link, intermediate faults, and very high faults, through maximum interrupt capacity. In addition, Type SSOC-3 cutouts can also be used
As a sectionalizing device, With the use of a portable loadbreak tool, Type SSOC-3 cutouts can function much like an overhead disconnect switch. There are 300 amp disconnect blade.
● Superior performance:
Combines fuse links and provides transformers, capacitors and cables used in overhead line with complete fault, protection. Cuts off promptly the small or large currents fault and is capable of interrupting 6.3 ka and 12.5 ka short fault current
● Maintenance tree:
Uses the cast copper material to ensure the reliability of switching on/off, new materials for fuse tube and inorganic arcing materials sprayed on the tube wall.
● solidity:
Very strong mechanism construction. Uses the inorganic bond to conglutinates the inserting parts of assembling mechanism the inside of the insulator which can ensure operation of several decades without swelling of insulator. Guarantees to endure the strong dynamic and wallop caused by the fault current or at times when closing
● UV resistance:
Smears special UV ~ resistant layer on the surface of fuse to prevent UV influence on the aging.
● Fuse:
Special alloy with lower melting point, can both stabilize the time-current characteristic for the fuse and maintain the operation for long term and, in addition, the fuse arcing material is not easily aged because of slow temperature -raising
● superior mechanism performance:
Inserting/disassembling simply the fuse without any precise orientating and adjusting. Absorbing the dynamic with backup platen when closing and reliable unbuckling independent upon the fault current.
● Design principle of button and top contacts:
The stainless steel backup plate which maintains constant contact tension and complements the force for fuse This plate can ensure drawing fuse prompt out of arcing tube
● Fuse link classification:
According to melting feature the fuse link is classified into K and T type and according to standard IEC282 into ordinary, omnipotent, screwed type
● Precise time ~ current characteristic:
The fuse components are produced with the materials of high pure silver, silver—copper alloy and nick—chrome alloy. The precise processed and assembled wires prevent cranny and shrinkage which influence directly accuracy of time-current characteristic
● indefectible Fuse components:
The pressed connecting lug, the tightened thread with high tensile strength, ensure the fuses of any current, degree endure the tensile force no more than 60N
● Superior capacity to interrupt the small fault current
Interrupt reliably the internal faults between the prime and secondary winding of the transformer, the short fault between the secondary bushings of transformer and the same fault in the lead between the secondary bushings of transformer and air insulation switchgear, ensure the operating of transformer in order
FUSE LINK SELECT TABLE
|
rated current (A) |
1～25 |
30～40 |
50～100 |
140～200 |
|
A(mm) |
12.5±0.2 |
12.5±0.2 |
19±0.3 |
19±0.3 |
|
B(mm) |
19±0.3 |
19±0.3 |
unsuitable |
unsuitable |
|
C(mm) |
600 |
600 |
600 |
600 |
|
D(mm) |
2.0 |
3.0 |
5.0 |
7.0 |
|
F(mm) |
6.5 |
8.0 |
10.0 |
12.0 |
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