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Porcelain Insulator
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- Line Post Insulator »
- Station Post Insulator »
- Disc Insulator »
- Pin Insulator »
- Long Rod Insulator »
- Porcelain Bushing »
- Strain Spool Shackle And Tele Insulator »
Porcelain insulators is made of ceramic material, which the installation altitude should be less than one thousand meter.Voltage is up to 0.3kv-330kv.They have higher leakage distance profiles and more stronger in compression.
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Power Fitting
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- Cross Arm »
- Insulator Spindle »
- Power Line Accessories »
Power fitting is made of mild steel /AL alloy which are used to fix the insulators, it advance hot dip/cold galvanized mode for processing.and it’s the connecting equipment in power system.
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Composite Insulators
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- Suspension Composite Insulator »
- Pin type composite insulator »
- Line post composite insulator »
Composite insulators is made of polymer and widely used in high voltage transmission lines.With light weight,small size,high tensile strength,they are suitable for high polluted area.,the voltage is up to 11kv-33kv,it had applied standard of IEC61109 and IEC61952.
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Glass insulator
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- Standard type Disc insulator »
- Fog type Disc insulator »
- Open air profile Disc insulator »
The surface of the glass insulator has high mechanical strength,it profect the surface from cracking.Compared with porcelain insulator,the aging process is much slower.
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ABC Cable Fitting
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- Insulation Clamp »
- Piercing Connector Clamp »
- Parallel Clamp »
- Strain Clamp »
- Cable Lug »
A broad usage in the low voltage insulation lines, leading the branch connection from the main conductor; T-connection of low voltage insulation wire service and cable branch connection for the building distribution system
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Cut Out Fuse And Arrester
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- Porcelain Cut-out fuse »
- Composite Cut-out Fuse »
- Porcelain Arrester »
- Gang Insulator(Isolate Switch) »
- Polymer Arrester »
- Fuse And Arrester Fitting »
Cut out fuse is a combination of a fuse and a switch,it’s voltage is up to 11kv-33kv,which is made of porcelain,polymer or steel.When the current exceed the specified value,it will produce heat and disconnect.arrester is made of porcelain or polymer.the voltage is 11kv-33kv.it is a device used on electrical power systems to protect the insulation and conductors of the system from the damaging effects of lightning.
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Bus Bar Insulator And Cable
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- LV bus bar insulator »
- HV bus bar insulator »
- Cable And Fittings »
Bus Bar Insulators mainly made from bulk molding compound, unsaturated polymer with fiber glass. Product itself are with good properties such as electrical resistance, hear resistance, fire resistance, low shrinkage, water resistance.
IEC 60269 fuses
Cross section of a screw-type fuse holder with Diazed fuse
Main article: IEC 60269
The International Electrotechnical Commission publishes standard 60269 for low-voltage power fuses. The standard is in four volumes, which describe general requirements, fuses for industrial and commercial applications, fuses for residential applications, and fuses to protect semiconductor devices. The IEC standard unifies several national standards, thereby improving the interchangeability of fuses in international trade. All fuses of different technologies tested to meet IEC standards will have similar time-current characteristics, which simplifies design and maintenance.
UL 248 fuses (North America)
In the United States and Canada, low-voltage fuses to 1 kV AC rating are made in accordance with Underwriters Laboratories standard UL 248 or the harmonized Canadian Standards Association standard C22.2 No. 248. This standard applies to fuses rated 1 kV or less, AC or DC, and with breaking capacity up to 200 kA. These fuses are intended for installations following Canadian Electrical Code, Part I (CEC), or the National Electrical Code, NFPA 70 (NEC).
The standard ampere ratings for fuses (and circuit breakers) in USA/Canada are considered 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 110, 125, 150, 175, 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 1000, 1200, 1600, 2000, 2500, 3000, 4000, 5000, and 6000 amperes. Additional standard ampere ratings for fuses are 1, 3, 6, 10, and 601.
UL 248 currently has 19 "parts". UL 248-1 sets the general requirements for fuses, while the latter parts are dedicated to specific fuses sizes (ex: 248-8 for Class J, 248-10 for Class L), or for categories of fuses with unique properties (ex: 248-13 for semiconductor fuses, 248-19 for photovoltaic fuses). The general requirements (248-1) apply except as modified by the supplemental part (240-x). For example, UL 248-19 allows photovoltaic fuses to be rated up to 1500 volts, DC, versus 1000 volts under the general requirements.
IEC and UL nomenclature varies slightly. IEC standards refer to a "fuse" as the assembly of a fuse link and fuse holder. In North American standards, the fuse is the replaceable portion of the assembly, and a fuse link would be a bare metal element for installation in a fuse.
