SE-325SN

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Protection Relays & Systems form a significant part of any Electrical system. This is because they provide important protection against power losses and faults. The SE-325SN is a type of protective relay that is specially designed for protection and control of three phase systems. The SE-325SN is highly reliable and offers many features that are useful for applications in industries.

The SE-325SN is mainly used to provide protection against different types of overloads. It is also capable of detecting phase unbalance, phase reversal, overvoltage, undervoltage, and other electrical faults. The relay also provides protection against single phase faults like overloading, short circuit, and current unbalance. All of these features make the SE-325SN an ideal choice for protecting three phase systems.

The SE-325SN also has a number of built-in and optional protective relays that help to enhance its performance. These include protection against phase reversal, overcurrent, single phase protection, reverse power flow and negative sequence protection. These features are particularly helpful in protecting against many common problems that are encountered in industrial applications. The combination of these features makes the SE-325SN an ideal protection solution for many industrial applications.

The working principle of the SE-325SN is based on the use of two main components. These are the main element and the auxiliary element. The main element is a relay that is connected to each of the three phases of the electrical system. It detects any abnormal electrical current in the system and activates an alarm when a fault is detected. The auxiliary element is a relay that is connected to the three phases and it activates when the main element has detected an overload or any other fault in the system.

The SE-325SN also has optional features like automatic reclosing and synchronizing with the mains supply. The automatic reclosing feature enables the unit to automatically close the contact of the relays in order to shut off the power supply when an overload or short circuit is detected. This feature reduces the risk of damaging the machine or the electrical system in the event of an overload or short circuit. The synchronizing feature allows the SE-325SN to synchronize the frequency of the external power supply with the internal mains supply, ensuring that the load remains stable even when the external supply is weak or intermittent.

Overall, the SE-325SN provides an excellent solution for protecting and controlling three phase systems. It offers great protection against overloading, undervoltage, unbalanced current, and other faults. Its optional features like automatic reclosing and synchronizing make it even more useful for industrial applications. It is a highly reliable and cost effective device that provides the necessary protection against power losses and faults.

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