ABB RED670 line differential protection equipment

ABB RED670 is a line differential protection device produced by ABB, which is widely used in the protection, control and monitoring of power systems. This device is versatile and flexible to meet the requirements of a wide range of applications, especially for power systems of all voltage levels to protect, control and monitor overhead lines and cables.

The RED670 features split-phase differential protection technology, which is highly sensitive to high-resistance faults and provides safe phase selection for up to five line terminals. In addition, it can also include two or three winding power transformers in the protection range, thus achieving comprehensive protection of the power system.

The main features and functions of the device include:

Support single-phase, two-phase and three-phase tripping mode, so that line faults can be timely and accurate response.

When the communication channel is interrupted, the distance protection can be used as a selective backup protection to ensure the stable operation of the power system.

Equipped with current protection function, effectively detect the fault current in the line to prevent equipment damage caused by excessive current.

With voltage protection function, monitor voltage changes on the line to ensure voltage stability and prevent voltage fluctuations from causing damage to the equipment.

It has the power system monitoring function, including the monitoring and frequency protection of the secondary system, to realize the comprehensive monitoring and early warning of the power system.

In addition, ABB RED670 can be adapted to different network structures, including impedance grounded or directly grounded systems, as well as a variety of networks including series compensation systems. Its use can improve the reliability of power systems and provide integrated protection, control and monitoring solutions to help achieve intelligent and efficient operation of power systems.

Solemn promise

1. All the items sold by the company, module card parts, etc., the quality problems arising from normal use during the warranty period are replaced free of charge, and there is no evasion.

2. For materials and equipment that have not been discontinued beyond the warranty period, only the cost of relevant parts will be charged for quality problems.

3. Provide replacement models and equipment replacement process services for discontinued materials and equipment.

4. Customers have purchased materials and equipment, lifetime free upgrade system software, related technical information provided free of charge.

5. Visit the use of materials purchased by customers from time to time, and solve any problems in time.

6. The company hotline provides 24-hour service, and the questions raised by customers are answered within 1 hour.

7. Not done, the company spirit of "thoughtful service, responsible to the end" attitude, from the customer's point of view to solve the problem, with serious and rigorous enterprise style, dedicated to each customer service.