Which electrical equipment uses auxiliary switches

In power systems, auxiliary switches are common and important devices. They play a key role in controlling, protecting and monitoring electrical equipment. This article will take an in-depth look at which electrical equipment uses auxiliary switches and explain how they work and their range of applications.

1. Circuit breaker

Circuit breakers are one of the most common electrical devices in power systems. They are used to interrupt electrical circuits to protect equipment from damage due to current overloads or short circuits. The auxiliary switch plays a monitoring and control role in the circuit breaker. Through the auxiliary switch, we can monitor the status of the circuit breaker, such as switch position, contact connection or disconnection, etc. This information is useful for real-time monitoring and remote control of circuit breakers.

2. Contactor

Contactors are switching devices used to control electrical equipment. They are widely used in control systems for various motors, generators and other equipment. Auxiliary switches are used in contactors to detect the status of contacts and transmit control signals. Through the auxiliary switch, we can know whether the contactor is triggered and whether the contacts are working properly. This is very important to ensure the normal operation of the equipment.

3. Transformer

Transformers are important equipment used to convert voltage in power systems. Auxiliary switches play a protective and monitoring role in transformers. Through the auxiliary switch, we can detect parameters such as temperature, oil level and pressure of the transformer to ensure the normal operation of the equipment. In addition, the auxiliary switch is used to control the cooling system of the transformer to maintain the temperature of the equipment within a safe range.

4. Generator

Generator is one of the core components of the power system. Auxiliary switches are used in generators to monitor and control various parameters. Through the auxiliary switch, we can detect information such as the generator's speed, temperature, vibration, and current. This data is critical to ensuring smooth operation of the generator. In addition, the auxiliary switch is also used in the automatic start-stop system and electrical protection device of the generator.

To sum up, auxiliary switches play an important role in power systems. They are used to monitor, control and protect various power equipment, ensuring the safe and stable operation of the power system. Circuit breakers, contactors, transformers, and generators are all common devices that use auxiliary switches. Through the auxiliary switch, we can obtain key electrical parameters to achieve effective control and protection of the equipment.