PGR-6803-120

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Introduction

Protection relays are a vital component in the modern power system, and the PGR-6803-120 is a premier relays in its own class. It is specifically designed for the protection of busbar, line, generator, transformer, and other connected apparatus in the electrical system.The PGR-6803-120 offers a comprehensive set of features and operations that help improve system protection, reduce maintenance costs, and ensure reliable operation. This article explores the working principle and applications of the PGR-6803-120 relay.

Working Principle

The PGR-6803-120 is a multi-functional, digital, microprocessor-based protection relay for busbar, line, and generator protection. The PGR-6803-120 is designed to provide a highly reliable and cost-effective solution for system protection. The core of the PGR-6803-120 is based on a two-stage logic control algorithm. In the first stage, a static detection circuit is used to detect a pre-defined set of power system parameters. If an abnormal event occurs, the static detection circuit signals the microprocessor to start the second stage of operation.In the second stage, the microprocessor analyzes the input signals and triggers the necessary protective action. The PGR-6803-120 has a user interface which allows the user to monitor the system parameters and set the desired operating parameters. Advanced logic can be used to customize the relay according to each application.The PGR-6803-120 provides advanced protective functions such as differential protection, line distance protection, overcurrent protection, short-circuit protection, and earth fault protection. Additional features include self-testing, simulation testing, and fault recorder.

Applications

The PGR-6803-120 relay can be used for the protection of busbar, line, generator, and transformer and other connected apparatus in the electrical system. It is suitable for use in power systems with single-end or circuit-breaker-and-half schemes. It can also be used in generators, motors, and other rotating machinery protection.The PGR-6803-120 can provide protection for a wide range of applications, from medium voltage systems such as power stations, industries, and substations; to low voltage systems such as generators and residential networks.The PGR- 6803-120 provides improved system reliability and helps to reduce outage times by providing fast and accurate protection. Additionally, its user interface and customization features make it suitable for both small and large scale deployments.

Conclusion

In conclusion, the PGR-6803-120 is a versatile and reliable protection relay. It is suitable for a wide range of applications in the power system, from medium voltage to low voltage, and offers a host of features and options to ensure reliable and accurate system protection. The PGR-6803-120 can help reduce maintenance costs and ensure the system reliability and protect against damages caused by abnormal conditions.

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