SE-330AU-21-00

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Protection Relays & Systems (PRS) are an essential component of any electrical system, as they provide the necessary safety protection for both operators and equipment. One of the most important products in PRS is the SE-330AU-21-00, which is designed for efficient and precise fault protection in low voltage applications. Let us look at the application field and working principle of this device in detail.

Application Field

The SE-330AU-21-00 is a sophisticated protection relay that is designed as a compact, lightweight unit with built-in microprocessor controls. It is suitable for highly reliable protection of low voltage networks such as electric grids, industrial systems, process control systems, and building networks. The SE-330AU-21-00 can be used as a single-phase or three-phase protection relay, depending on the application. The unit is designed to protect against short-circuits, overloads, and undervoltages, and can also detect and disconnect defective loads.

The SE-330AU-21-00 is equipped with a built-in time relay for accurate operation and can be remotely monitored using a built-in communication unit. It is designed for a wide range of operating temperatures and can also be remotely monitored and adjusted. Additionally, the SE-330AU-21-00 is equipped with an intuitive interface, which allows for easy operation and configuration even for novice users.

Working Principle

The SE-330AU-21-00 employs two distinct mechanisms of protection: a phase comparison mechanism and a fault detection mechanism. The phase comparison mechanism continuously evaluates the phase relationships between the three phase conductors and determines when a fault occurs. When a fault occurs, the phase comparison mechanism triggers the initiating of an alarm signal, which is sent to the control location. The fault detection mechanism is essentially an algorithm that is designed to detect certain types of short-circuits and power abnormalities in a low voltage network.

Once a fault has been detected, the fault detection circuit will generate an interrupt signal which will be sent to the control location, alerting personnel to the malfunction. In addition, the SE-330AU-21-00 is capable of automatic resetting or self-protection, which means that it can disconnect the problematic circuit or device from the power supply, preventing further damage or disruption to other components.

The SE-330AU-21-00 is also equipped with protective devices such as fuses and circuit breakers, which will limit the current in case of an overload and protect the device from over current damage. Furthermore, the unit will also provide voltage protection during normal operation and undervoltage protection during abnormal operation. All these features make the SE-330AU-21-00 an ideal solution for low voltage protection application.

In conclusion, the SE-330AU-21-00 is an advanced protection relay designed to provide precise fault protection in low voltage applications. With its intuitive interface and reliable performance, the SE-330AU-21-00 makes it easy to monitor, control, and protect low voltage networks, ensuring a safe and efficient operation.

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