Application of composite suspension insulators:
Composite suspension insulators are used for insulators and suspension grounds in high voltage and ultra high voltage, UHV AC transmission lines.
Composite suspension insulator features:
As a new generation of porcelain insulators, silicone rubber composite insulators can improve the pollution flash voltage, minimize the maintenance of line transportation and maintenance, and reduce the power supply reliability.
Composite insulators have incomparable advantages over traditional porcelain insulators:
1. Simple structure;
2, good anti-fouling performance, silicone rubber material hydrophobicity, migration, recovery, and can migrate to the surface of the fouling layer after the surface area of ​​the composite insulator;
3. The manufacturing process is simple;
4. Light weight and convenient transportation;
5, cost-effective;
6. Low maintenance manpower and low cost;
7. Strong resistance to ice damage;
8, high mechanical strength level is easy to achieve.
Application of pin composite insulators:
Mainly used in substations.
Features:
As a new generation of porcelain insulators, silicone rubber composite insulators can improve the pollution flash voltage, minimize the maintenance of line transportation and maintenance, and reduce the power supply reliability.
Two - way trigger diode, also known as two - end ac device (DIAC), and two - way thyristor at the same time.Because of its simple structure and low price, it is often used to trigger the bidirectional thyristor, and can also constitute overvoltage protection circuits.Construction, symbol and equivalent circuit of a bidirectional trigger diode.
Also commonly used in the overvoltage protection, timing, shift equal circuit, Figure 2 is the overvoltage protection circuit composed of bidirectional trigger diode and bidirectional thyristor.When the transient voltage exceeds the DIAC and Ubo, the DIAC quickly conducts and triggers the bidirectional thyristor to also conduct, so that the following load is protected from overvoltage damage.
DIACS
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