CBB61 capacitors are a type of metallized polypropylene film capacitors widely used in various electrical and electronic applications. These capacitors are known for their high reliability, low loss, and self-healing properties, making them ideal for use in motor run and start applications. They are commonly found in household appliances such as ceiling fans, air conditioners, and small motors.
CBB61 capacitors are constructed using a metallized polypropylene film as the dielectric material. This film is metalized with a thin layer of zinc and aluminum, which provides self-healing properties. The capacitors are encapsulated in a plastic shell and filled with epoxy resin, which offers moisture and oil resistance. The epoxy resin also provides flame retardancy, enhancing the safety of the capacitor.
•Self-Healing: In the event of a voltage breakdown, the capacitor can recover on its own, ensuring continued operation.
•Low Dissipation Factor: This means that the capacitor wastes very little energy, making it highly efficient.
•High Insulation Resistance: Ensures safe and reliable operation.
•Wide Temperature Range: Typically operates between -40°C to +105°C.
•Compact Size: Suitable for use in small and compact electronic devices.
•Capacitance Range: 0.1µF to 80µF.
•Voltage Range: 110VAC to 600VAC.
•Frequency: 50/60Hz.
•Capacitance Tolerance: ±5% (standard).
•Dissipation Factor: ≤0.002 at 50Hz.
CBB61 capacitors are primarily used as motor run capacitors in single-phase AC motors. They provide the necessary phase shift to start and sustain the motor's rotation. Some common applications include:
•Ceiling Fans: They help in creating the rotating magnetic field needed for the fan motor to start and maintain its speed.
•Air Conditioners: Used in the fan motors of both indoor and outdoor units.
•Small Appliance Motors: Such as exhaust fans, range hoods, and some types of pumps.
•Long Lifespan: With proper care, these capacitors can last for many years.
•Low Impedance: Allows for efficient power transfer.
•Wide Application Range: Suitable for a variety of electrical applications.
•Avoid Overvoltage: Exceeding the rated voltage can permanently damage the capacitor.
•Avoid Overcurrent: Do not exceed the maximum current rating.
•Handle with Care: These capacitors are delicate and should be handled gently to avoid damage.
To test a CBB61 capacitor, disconnect the power and discharge the capacitor using a suitable resistor. Then, use a multimeter with capacitance measurement capabilities to verify its capacitance value. Common symptoms of a failing capacitor include the fan running at a slower speed than usual, producing a humming sound, or failing to start at all.
CBB61 capacitors are essential components in many electrical devices, providing reliable and efficient operation. Their self-healing properties, low loss, and high insulation resistance make them a preferred choice for motor run applications. Proper handling and maintenance can ensure a long lifespan and optimal performance.
