Description

ABB REF545KB133AAAA

It is a microcomputer integrated protection relay that integrates protection, control, measurement and monitoring functions. It is mainly designed for use in medium voltage distribution networks to provide comprehensive and reliable protection for key assets such as transformers, motors, capacitor banks and feeders.

 

 

 

Detailed Product Description
1. Main Functions
Protection Functions:

Overcurrent Protection: Time-limited and instantaneous overcurrent protection, typically used for phase-to-phase fault protection.

Ground Fault Protection: Time-limited and instantaneous ground fault protection, used to detect ground leakage current.

Thermal Overload Protection: Based on a thermal model, protects motors or transformers from overheating due to overload.

Negative Sequence Overcurrent Protection: Used to detect asymmetrical faults such as phase loss or phase imbalance, especially important for motor protection.

Undervoltage/Overvoltage Protection:

Underfrequency/Overfrequency Protection:

Circuit Breaker Failure Protection:

Control Functions:

Local/remote circuit breaker control (closing/opening).

Programmable logic control for complex operations such as automatic switching and interlocking.

Multiple configurable input/output contacts for connecting external signals and controlling other devices.

Measurement and Monitoring:

High-precision measurement of all three-phase current, voltage, active/reactive/apparent power, power factor, frequency, and energy.

Event logging with time stamps facilitates fault analysis.

Fault waveform recording records current and voltage waveforms before and after a fault occurs.

Equipment operating status monitoring (such as circuit breaker operation counts and trip circuit monitoring).

Typical Applications
Protection of transformers in industrial plants and infrastructure.

Comprehensive protection of medium-voltage motors (such as pumps, fans, and compressors).

Protection and control of medium-voltage feeders (outgoing lines).

Automatic switching and protection of capacitor banks

 

Sales of the brand:

ABB、EPRO、GE、FOXBORO、Schneider、Rexroth、Honeywell、Bently、YASKAWA other global DCS system and PLC system, servo system of famous industrial brand.

 

 

Quick delivery of spot goods and quality assurance – your trusted purchasing partner!

🔥 Spot inventory, same day shipment

All products are in sufficient stock reserve. After you place an order, we will arrange shipment on the same day to minimize waiting time and help your project progress quickly.

💳 Flexible payment, easy transaction
Support multiple payment methods, including mainstream settlement methods such as T/T, which are safe and convenient, meet the needs of different customers, and make cross-border transactions more worry free.

🛡️ One year warranty, worry free after-sales service
We offer a one-year warranty service for all products! If there are any quality issues, we will provide you with professional after-sales support as soon as possible and provide full protection throughout the process.

🚚 Global express delivery, secure delivery
We have deep cooperation with well-known domestic and foreign logistics companies such as SF Express, DHL, FEDEX, etc., to ensure that every shipment can be safely, timely, and efficiently delivered, allowing you to receive your goods without worry.

📞 24/7 customer service, online response

You can contact us anytime and anywhere through WeChat, Skype, WhatsApp, LINE, or email. Our professional team will be available 24 hours a day to answer your questions and provide attentive service.
Choosing us means choosing speed, quality, and trust!

Contact us immediately to embark on a new experience of efficient procurement! 📦✨

 

 

 

Company Name: ABB Ltd

Headquarters: Zurich, Switzerland

Established in 1988 (formed by the merger of ASEA from Sweden and BBC Brown Boveri from Switzerland)

Business scope: Electrification, Automation, Robotics and Discrete Automation, Motion Control

Operating scope: Over 100 countries worldwide

n 1988, ASEA from Sweden merged with BBC Brown Boveri from Switzerland to form ABB, which became one of the largest engineering groups in the world at the time. This merger is a milestone cross-border merger in the history of European industry.

Growth and Expansion: Throughout the 1990s and early 21st century, ABB rapidly expanded its global business and product portfolio through a series of acquisitions and internal growth

Main business sectors：

Electrification business

Process Automation

Motion Control Business

Robotics&Discrete Automation Business

China market: China is ABB’s second largest market globally and holds an extremely important strategic position. ABB has achieved a comprehensive layout in China, including:

R&D: We have a globally leading R&D center.

Manufacturing: Multiple modern factories located throughout the country (such as Xiamen, Beijing, Shanghai, etc.).

Sales and Service: Our extensive sales and service network covers all parts of the country