4-1618400-2

Protection Relays & Systems

Protection relays refer to electrical relays which are employed to sense the presence of abnormally high electric current in a circuit and when it present, the relay trips opening an associated circuit breaker to disconnect affected equipment from the power supply. 4-1618400-2 is an example of the popular protection relay, which is widely used in a variety of applications and is manufactured by a multinational company producing automation products.

Application Field

4-1618400-2 protection relay provides over-current protection for relays and distribution feeders. The relay is usually installed at the upstream end of a distribution feeder and protect downstream components from getting damaged due to overload and short circuit. It can also be integrated as part of the power control system in the automating process control applications & factories. Examples include data centers, automotive battery charging stations, energy storage systems, solar panel systems & wiring protection etc. Furthermore, 4-1618400-2 protection relay can monitor the connected line including neutral conductor to protect the system from low fault conditions, making it reliable to be used in more complex applications.

Working Principle

The working principal of 4-1618400-2 protection relay is based on the comparison of sensed current against the predetermined settings. It is usually designed with adjustable settings to meet different application requirements and hence providing flexibility to the users. The sensitivity of the relay can be adjusted by turning the calibration dial to select the desired pickup current (which is the current level that activates the relay). The protection relay has three operation scenarios: sinusoidal current, DC current, asymmetrical or 3-phase current. With a simple setting, it can detect a fault situation with a current level that is above its setting, it will then send a signal to the associated circuit breaker which opens and cuts the power supply to safeguard the connected equipment.

In conclusion, 4-1618400-2 protection relay is a versatile and reliable device which can be programmed and used in various scenarios. Through effective current-sensing functions and adjustable settings, the relay can effectively protect downstream equipment from damage due to overload or short circuit, thus providing noise-free, safe and reliable power supply.