Custom Telecommunications Protection Relays Company

Advanced Functions and Applications of Modern Feeder Protection Relays: Acrel's Intelligent Practices

As a high-tech enterprise specializing in energy management and electrical safety, Acrel Co., Ltd. deeply understands the higher requirements that modern distribution networks place on feeder protection relays. They have long surpassed their traditional role of overcurrent and circuit breaking protection, evolving into intelligent edge nodes that integrate protection, monitoring, control, communication, and data management. Leveraging its strong R&D capabilities and its integrated "Cloud-Edge-End" architecture, Acrel is redefining the application value of feeder protection relays.

The advanced nature of modern Acrel feeder protection relays is mainly reflected in the following aspects:

Comprehensive Electrical Parameter Monitoring and Advanced Protection Functions

Acrel's feeder protection devices act as "comprehensive sensing organs" for distribution lines. They not only accurately monitor basic parameters such as current, voltage, power, energy, and frequency but also integrate advanced diagnostic functions like high-order harmonic analysis, voltage swell/sag recording, and THD (Total Harmonic Distortion) calculation. Regarding protection, beyond standard overcurrent, instantaneous trip, and earth fault protection, Acrel's relays also provide directional overcurrent protection, inverse time characteristics, and negative sequence protection. These features enable precise identification and isolation of more complex fault types, greatly enhancing protection selectivity and reliability, making them particularly suitable for complex multi-source network structures, such as PV grid-connection points.

Powerful Data Gateway and Edge Computing Capabilities

Within Acrel's energy internet architecture, each feeder protection relay is an intelligent "Edge-End" device. They are equipped with powerful processors capable of real-time local data processing and analysis. Acting as communication gateways, they transmit critical real-time data, event records, and fault waveform records to Acrel's Enterprise Microgrid Energy Management Cloud Platform or local EMS (Energy Management System) via various methods such as RS485, Ethernet, 4G/LoRa®. This synergy between edge and cloud enables seamless data flow, laying a solid foundation for subsequent in-depth analysis.

Enabling System-Level Applications and Intelligent Maintenance

The value of Acrel feeder protection relays is fully demonstrated in its system solutions. Their high-precision measurement and high-speed communication capabilities are the core foundation for enabling the following advanced applications:

• Fault Early Warning and Precise Location: By continuously monitoring trend changes, insulation aging or abnormal loads can be warned before a fault occurs. If a fault does occur, precise fault data helps maintenance personnel quickly locate the fault point, reducing recovery time.
• Power Quality Management Coordination: Data on power quality issues such as harmonics and unbalance monitored by the relays can be used to coordinate with Acrel's Active Power Filters (APF) and other mitigation devices, enabling automatic switching and closed-loop control to ensure power safety.
• Energy Management and Cost Accounting: Functioning as high-precision energy meters, the relays provide reliable data for energy measurement and cost allocation per circuit or area, directly helping enterprises achieve energy savings, reduce consumption, and lower operational costs.

Seamless Integration and Sustainability

Acrel's feeder protection relays are not isolated products but key components within its vast product ecosystem. They can be seamlessly integrated with other Acrel products like intelligent measurement and control instruments, power monitoring systems, and smart circuit breakers, together forming a complete solution from low voltage to medium voltage, from the terminal to the cloud. This integration eliminates "information silos" between equipment from different brands, providing customers with a unified, efficient, and sustainable energy management experience, perfectly aligning with Acrel's corporate mission of "building a smarter, greener future."

In summary, modern Acrel feeder protection relays have transformed from mere protective devices into cornerstones for achieving secure, transparent, and intelligent management of distribution systems. By providing rich data and powerful connectivity, they empower entire microgrids and smart distribution systems, ultimately helping global clients across various industries enhance energy security, optimize operational efficiency, and achieve their sustainability goals.

Basic Analysis of Telecommunications Protection Relays: The "Guardian" Ensuring Uninterrupted Operation of Communication Networks

In modern society, communication networks act like the "nervous system" that maintains social operation, and their stability and reliability are paramount. One of the unsung "guardians" working behind the scenes to ensure the 24/7 uninterrupted operation of this complex system is the Telecommunications Protection Relay. As a high-tech enterprise with decades of experience in energy management and electrical safety, Acrel Co., Ltd. deeply understands its core mission within critical infrastructure.

What is a Telecommunications Protection Relay?

A telecommunications protection relay is an automatic control device specifically designed for the power supply systems of communication networks. It functions like a tireless sentry, continuously monitoring the power supply circuit—typically a -48V DC power source—for communication equipment (such as base stations, data center servers, transmission equipment, etc.). Upon detecting abnormalities such as overvoltage, undervoltage, or overcurrent, it immediately activates. It automatically and swiftly switches the load from the faulty circuit (e.g., a failed main power supply) to the backup circuit (e.g., a battery bank), thereby isolating the fault, ensuring the core communication equipment remains powered, and preventing network service interruptions.

The Acrel Approach to Protection: Integrating Technology and Expertise

Since its founding in 2003, Acrel has consistently focused on electrical safety and energy efficiency management. We apply our profound understanding of electrical systems and innovative technology, embodied in over 600 patents and software copyrights, to the design and manufacturing of telecommunications protection relays.

Our relay products are not standalone simple switches; they are integral components of Acrel's comprehensive "cloud-edge-end" energy internet architecture. At the "end" side, they act as reliable smart terminals, rigorously executing protection tasks. The data they collect can be uploaded to the "cloud" platform via "edge" devices, enabling remote monitoring, alarm management, and energy efficiency analysis, significantly enhancing the intelligence level and efficiency of operational maintenance.

Why is it the "Guardian"?

High Reliability: The power supply for communication networks allows no room for error. Acrel's telecommunications protection relays are manufactured based on strict quality standards and advanced production processes (such as lead-free production lines), ensuring long-term stable operation of the products in various complex environments. This provides a solid guarantee for the tens of thousands of system solutions deployed.

Intelligent Evolution: Traditional relays only provide basic protection functions, but Acrel is committed to advancing their intelligence. Our products integrate high-precision measurement and communication capabilities. They not only perform protection but also act as data points for energy management, helping customers achieve intelligent, real-time energy management, enhance energy security, and reduce operational costs.

Part of Holistic Energy Management: Acrel's vision extends beyond single products. Our telecommunications protection relays are the starting point towards a grander goal—they work in seamless synergy with the company's integrated product ecosystem, from cloud platforms to end components. Together, they provide innovative and sustainable solutions for multiple critical sectors such as power, renewable energy, and data centers, helping businesses improve efficiency, reduce consumption, and achieve sustainability goals.

In summary, the telecommunications protection relay is a silent yet vital safety barrier within communication network power systems. Leveraging two decades of professional expertise in the high-tech energy management sector, Acrel is safeguarding the "lifeline" of communication networks worldwide through intelligent and reliable protection products and system solutions. We are working together with all our customers and partners to build a smarter, greener future.