K2CM-Q4HA

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Protection relays and systems are important components of the electrical grid. Without them, the safety and reliability of the system would be compromised and critical faults would not be detected. The K2CM-Q4HA is a protection system designed to provide high levels of protection and safety for power systems. In this article, we will discuss the application field and working principle of the K2CM-Q4HA protection system.

The K2CM-Q4HA protection system is designed for use with medium and low voltage networks. It is suitable for both ac and dc systems and provides protection for cables, transformers, motors, and generators. The system includes several advanced protective functions, such as short-circuit, overcurrent, over-voltage, and earth fault protection. Additionally, the system is equipped with a metering function that can be used to monitor the current and voltage in the system.

The working principle of the K2CM-Q4HA protection system is based on the use of electromechanical relays. These relays detect changes in the current or voltage in the system and then activate the corresponding protective functions. The relays are connected to the system through a series of current transformers and voltage transformers. These transformers are used to change the current and voltage signals into signals that can be read and processed by the relays.

Once the current and voltage signals are received by the relays, the protective functions are activated. The most common protective functions are based on the overcurrent protection. When the current flow exceeds the certain threshold, the relay will activate the protective function, which can be set manually or automatically. Additionally, the relays can detect over-voltage and under-voltage conditions, and then activate the appropriate protection to prevent damage to the system.

The K2CM-Q4HA protection system also includes a metering function to monitor the current and voltage in the system. This function can be used to identify possible network faults and to provide data for network maintenance. Additionally, this function can be used to detect changes in the load and balance the current flow in the network.

In conclusion, the K2CM-Q4HA protection system is designed for use with medium and low voltage networks, providing reliable protection for cables, transformers, motors, and generators. The system includes several advanced protective functions, such as short-circuit, overcurrent, over-voltage, and earth fault protection. Additionally, the system is equipped with a metering function to monitor the current and voltage in the system, to help prevent network faults and maintain the network balance.

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