REX521GHHPSH50G  PROTECTION UNIT

Description

Overview

Essential details：REX521GHHPSH50G  PROTECTION UNIT

The REX521GHHPSH50G is a protective relay specifically designed for protection, control, measurement and monitoring functions in medium voltage networks. Here are some details about the protected unit:

Scope of application: The REX521GHHPSH50G protection unit can be used in multiple areas of medium voltage power grids, including protection, control, measurement and monitoring functions. It is suitable for various types of feeders, outlets, transformers and bus sections.
Features: The protection unit has a variety of functions, such as overcurrent protection, ground protection, unbalanced protection, zero sequence protection. In addition, it also has the measurement and control function, which can monitor various parameters of the power grid in real time, such as current, voltage, power factor, etc. REX521GHHPSH50G also has a powerful communication function, support a variety of communication protocols, and facilitate data interaction with the host computer system.
Hardware design: The REX521GHHPSH50G uses a high-performance processor and advanced circuit design to ensure its fast response and high reliability. The protection unit also has a variety of input and output interfaces to connect to various types of sensors and actuators.
Software configuration: The REX521GHHPSH50G protection unit supports multiple programming languages and development environments for easy software configuration and development. At the same time, it also provides a rich software library and tools to support various application scenarios.
Maintenance and expansion: The REX521GHHPSH50G protection unit has a self-diagnosis function, which can monitor its own operating status in real time, find faults in time and give alarm. In addition, the protection unit also supports remote maintenance and upgrade functions, which is easy for users to maintain and expand.
In summary, the REX521GHHPSH50G is a powerful and reliable protective relay suitable for multiple areas of medium voltage power grids.

REX521GHHPSH50G  

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REX521GHHPSH50G  PROTECTION UNIT

The REX 521 protective relay is designed for protection, control, measurement and monitoring in medium voltage power systems
Check. Typical applications include input and output feeders and substation protection. The relay is equipped with conventional current and electricity
Ac input of the voltage transformer.
The relay is based on a multiprocessor environment. HMI1 (Human Machine Interface) includes an LCD (liquid crystal display)
It has different menus for easy local use and notifies the user with instructions. In hardware
Modern technology is used in the software solutions.
REX 521 is part of the substation automatic control concept for distribution automatic control, which is further extended
The function and flexibility of the system.
The protective relay is equipped with a non-volatile memory chip to retain important data in the event of an interruption of the auxiliary power supply
Please. For example, changing a setting value will be stored in the chip when the value is sent to the relay
Stores new values without additional storage commands. The chip does not require a battery and enjoys lifetime maintenance.
The following data is stored in a non-volatile chip:
• Set the value
• Display status
• Output self-holding state
• Recorded value 3
• The last 50 events
When the relay is restarted, the display will resume the LED information and text that was displayed before the auxiliary power was interrupted
Ben. For more information on alarm LED lights, see Section 4.1.16 Alarm Lights.
Store recorded wave data from startup, trip, and other important events. After the auxiliary power is interrupted, it can pass
Navigate to the “Recorded Data” section of the function module that causes the indication to view the last three
Time, date, and fault current of the event.
The last 50 events that occurred before the auxiliary power outage can be viewed in the HMI event buffer. also
The time and date of these events will be restored.