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Capacitors are essential components in electrical and electronic circuits, and their markings carry important information about their characteristics and applications. The marking "CBB65" on a capacitor has specific meanings that can be broken down as follows:
1. "C" - General Classification
The letter "C" at the beginning is a common symbol in capacitor naming systems, which typically stands for "capacitor". It is a basic identifier that indicates the component belongs to the capacitor category in the realm of electrical components. This is a standardized way to start the naming of various types of capacitors, making it easy for engineers, technicians, and manufacturers to quickly recognize the general nature of the device.
2. "BB" - Dielectric Material
The "BB" in CBB65 represents the dielectric material used in the capacitor. In this case, it stands for polypropylene film. Polypropylene is a popular dielectric material for capacitors due to its excellent electrical properties. It has a high dielectric strength, which means it can withstand relatively high voltages without breaking down. This makes capacitors with polypropylene dielectric suitable for applications where high - voltage stability is required. Additionally, polypropylene has low dielectric losses, which implies that it dissipates very little energy in the form of heat during the charging and discharging cycles of the capacitor. This property helps to improve the efficiency and reliability of the capacitor.
3. "65" - Application and Design Series
The number "65" indicates the specific application and design series of the capacitor. CBB65 capacitors are mainly designed for use in single - phase motors, especially in air - conditioning compressors and refrigeration systems. These motors often require capacitors to provide the necessary phase shift and starting torque. The "65" series capacitors are engineered to meet the specific electrical and thermal requirements of these applications. They are designed to operate under relatively high - temperature and high - humidity conditions, which are common in air - conditioning and refrigeration environments.
In summary, when you see the marking "CBB65" on a capacitor, you know that it is a capacitor with a polypropylene film dielectric, specifically designed for use in single - phase motors in applications such as air - conditioning and refrigeration systems. Understanding these markings is crucial for proper selection and use of capacitors in electrical and electronic circuits, ensuring the safe and efficient operation of the overall system.
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