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[2013-02-07]
The black point of incandescent lamp holder is generally black glass. The role of the black circle of the insulating connector to a metal lamp cap housing and the solder pieces....
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[2013-02-07]
LED lamp holders includes a connection interface, the drive power supply, and an insulating bushing, an insulating bushing is a hollow plastic casing, the drive power is set in a plastic casing, the one end of the insulating bushing has a connector holder and connected to an external base,...
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[2013-02-07]
High-voltage wire is connected to one end of the tower and hung up a lot of disk-shaped porcelain insulators, it is in order to increase the creepage distance, usually made of glass or ceramic, called insulators....
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[2013-02-07]
High voltage porcelain insulator is used to support or suspension high voltage conductor from the ground to isolate the role of a special kind of insulator. Due to the relatively stable performance of the insulation of electrical porcelain insulators,...
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[2013-02-07]
General porcelain insulators material is composed of of gossan, tempered glass or ceramic and steel legs, and the total cement glue adhesive as one....
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[2013-02-07]
The porcelain insulators resistance measurement
1)Porcelain Insulation resistance measurement is a measurement of the insulation resistance of the porcelain insulator, toughened glass insulators, composite insulators. The purpose of measurement is to check the condition of the insulation of the insulator, the insulator insulation deterioration and insulation breakdown and other defects....
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[2013-02-07]
The internal structure of Glass porcelain insulators:
About several hundred nucleotides is usually located in the promoter Far regulatory elements (enhancer) or negative regulatory factors (for different chromatin) between a regulatory sequence. Insulator itself the expression of the gene is neither positive effect, and there is no negative effect, and its role is just do not let the effect of other regulatory elements of gene activation or inactivation effect effect....
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[2013-02-07]
Measurement methods:
Measure the glass porcelain insulators resistance for the insulator of the single element, only in the case of power outage, the relevant procedures specified in, using 2500V and above megger....
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[2013-02-07]
High mechanical strength of the surface layer of the glass porcelain insulators, so that the surface is not easy to crack. The electrical strength of the glass is generally remain unchanged during the entire run, and the aging process is much slower than porcelain, glass insulator scrapped mainly due to the self-damage occurred during the first year of the run, but the porcelain insulators defects only running for a few years after discovery....
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[2013-02-07]
Porcelain insulator is a special kind of control, it is possible to play an important role in the overhead transmission lines. The early years insulators for wire rod, slowly developed in the high-type high-voltage wires to connect one end of the tower and hung up a lot of disk-shaped insulators, it is in order to increase the creepage distance...
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