K2CM-2M

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K2CM-2M is one of the most widely used protection relays and systems used in the power engineering field. It is a two-zone overcurrent/short-circuit protection relay with multiple protection functions such as overcurrent, high-set overcurrent, short-circuit and ground protections. It is suitable for the protection of feeder lines or generators/motors and offers a high response rate to short circuits. It also provides accurate metering and monitoring services.

The K2CM-2M protection relay consists of several parts, such as a current transformer or a current sensing element, a relaying coil, a time-delay relay, and an overcurrent element. The current sensing element is connected to the power supply and senses the incoming current. It is then connected to the time delay relay, which is responsible for the delay between the detection of an overcurrent or short-circuit condition and the issuance of a protective command. The time delay relay is then connected to the relaying coil, which activates when the time delay relay has been enabled and an overcurrent or short-circuit condition has been detected. Finally, the overcurrent element is responsible for detecting the presence of an overcurrent condition and sending a signal to the relaying coil.

The primary application field for the K2CM-2M protection relay is in the protection of power distribution lines or generators/motors against short-circuit or overcurrent faults. It is also suitable for protecting power electronics equipment, such as converters and inverters, against overcurrent and short-circuit conditions. In addition, it provides reliability in unlocking motors safely, and can also be used for monitoring, metering and data recording.

The main advantage of the K2CM-2M protection relay compared to other relays is its high speed of response and the accuracy of protection under all operating conditions. The K2CM-2M relay has a built-in time-delay function that adjusts the response time depending on the magnitude of the fault current. This ensures that the fault is quickly detected and the current disrupted in order to avoid further damage. The K2CM-2M protection relay also allows for high accuracy in setting protection parameters for each element, ensuring precise protection.

In conclusion, the K2CM-2M protection relay is an effective and reliable protection system for power distribution lines, power electronics equipment, and generators/motors. Its fast response rate and accuracy provide higher levels of protection, as well as increased reliability in unlocking motors safely. The K2CM-2M protection relay is therefore an ideal solution for applications requiring reliable and accurate protection from overcurrent and short-circuit faults.

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