ABB的REB670母线差动保护装置是一款专为电力系统设计的保护设备，主要用于保护高压和低压母线。以下是其特点、应用场景和保护作用：

一、特点：

1. 差动保护：REB670具有差动保护功能，能够快速检测并处理母线故障，确保电力系统的稳定运行。
2. 可靠性高：该装置采用了高精度的检测技术，能够在各种情况下准确地检测母线故障，提高了保护的可靠性和稳定性。
3. 适应性广：REB670适用于各种规模和类型的电力系统，无论是大型还是小型电力系统，都能够提供有效的保护。
4. 易于配置：该装置具有简单易用的配置界面，用户可以根据实际需求进行快速配置，提高了设备的可操作性。

二、应用场景：

REB670广泛应用于各种类型的电力系统，包括但不限于工厂、数据中心、医院、学校等场所的电力系统。在这些场景中，REB670能够提供稳定、可靠的母线保护，确保电力系统的正常运行。

三、保护作用：

1. 差动保护：REB670通过差动原理实现母线故障的快速检测和处理，减小了停电范围，提高了供电可靠性。
2. 过流保护：当母线或支路发生过流故障时，REB670能够快速切断电流，防止设备受到进一步损坏。
3. 速断保护：当母线或支路发生严重故障时，REB670能够快速切除故障部分，防止故障扩大。
4. 自动重合闸功能：在某些情况下，短暂的故障可能导致母线失压，REB670具有自动重合闸功能，能够在故障排除后自动重新合闸，提高了供电可靠性。

综上所述，ABB REB670母线差动保护装置具有差动保护、过流保护、速断保护等多种保护功能，能够提供全面、可靠的母线保护。它适用于各种规模和类型的电力系统，能够确保电力系统的稳定运行，提高供电可靠性。

ABB's REB670 busbar differential protection device is a protection device designed specifically for power systems, mainly used to protect high-voltage and low-voltage busbars. The following are its characteristics, application scenarios, and protective effects:

1、 Features:

Differential protection: REB670 has differential protection function, which can quickly detect and handle bus faults, ensuring the stable operation of the power system.

High reliability: The device adopts high-precision detection technology, which can accurately detect bus faults in various situations, improving the reliability and stability of protection.

Wide adaptability: REB670 is suitable for various sizes and types of power systems, providing effective protection for both large and small power systems.

Easy to configure: The device has a simple and easy-to-use configuration interface, allowing users to quickly configure according to actual needs, improving the operability of the device.

2、 Application scenario:

REB670 is widely used in various types of power systems, including but not limited to power systems in factories, data centers, hospitals, schools, and other places. In these scenarios, REB670 can provide stable and reliable busbar protection to ensure the normal operation of the power system.

3、 Protective effect:

Differential protection: REB670 achieves rapid detection and processing of bus faults through differential principle, reducing power outage range and improving power supply reliability.

Overcurrent protection: When an overcurrent fault occurs in the busbar or branch, REB670 can quickly cut off the current to prevent further damage to the equipment.

Quick break protection: When a serious fault occurs in the busbar or branch, REB670 can quickly cut off the faulty part to prevent the fault from expanding.

Automatic reclosing function: In some cases, a brief fault may cause the busbar to lose voltage. REB670 has an automatic reclosing function, which can automatically reclose after troubleshooting, improving power supply reliability.

In summary, the ABB REB670 busbar differential protection device has various protection functions such as differential protection, overcurrent protection, and quick break protection, which can provide comprehensive and reliable busbar protection. It is suitable for various scales and types of power systems, ensuring the stable operation of the power system and improving power supply reliability.