REB670  母线保护装置 实现CT动态连接至不同的母线保护区

品牌：ABB

型号：REB670  

EB670 智能微机保护装置以应用的灵活性见长。它专门为电力系统母线、T接线路和支接线路的保护和监视而设计，从中压到超高压都有广泛的应用。其可扩展的输入、输出硬件模块使得REB670能够满足单母线、双母线带或不带旁母的接线、双断路器接线及一个半断路器接线的各种接线形式下母差保护需要。针对直接接地或低阻抗接地的电力系统中保护区内各种类型的相地或接地，REB670均能有选择地、可靠地快速切除；而对于不接地或高阻接地的电力系统，保护区内各种类型多相故障均能正确动作。

REB670能够提供完整的母线保护，除了差动保护功能，装置内置灵活的动态区域自动选择（对应隔离开关位置）。这使得装置能够实现CT动态连接至不同的母线保护区，并同时实现母线保护和断路器失灵跳闸的选择性及隔离开关与断路器的状态监视等功能。由于其独特的测量原理，REB670装置与其它数字式差动保护装置相比，对主CT要求更低。

ABB母线保护具有非常好的供应记录及用户口碑。

ABB母线保护装置起始于模拟式保护继电器，如 INX2/5, RADSS, REB 101/103，到目前为止，这些继电器已经成功运行超过40年，而ABB数字式母差保护装置REB500、RED521也有10多年的运行经验。所有这些装置创造了一个令人印象深刻的记录：从未由于装置原因导致误动。现今，全世界超过20,000段母线正在使用ABB的母差保护。

REB670  母线保护装置 实现CT动态连接至不同的母线保护区

Brand: ABB

Model: REB670

EB670 intelligent microcomputer protection device is known for application flexibility. It is specially designed for the protection and monitoring of power system busbars, T-connected lines and branch lines, and has a wide range of applications from medium voltage to ultra-high voltage. Its expandable input and output hardware modules enable the REB670 to meet a variety of bus differential protection in single, double bus with or without side bus connections, double circuit breaker connections, and half circuit breaker connections

Yes. The REB670 can be selectively and reliably removed quickly for all types of phase ground or ground in protected areas in power systems with direct or low impedance ground. For ungrounded or high-resistance grounded power systems, various types of multiphase faults in the protection area can operate correctly.

The REB670 provides complete busbar protection in addition to differential protection and built-in flexible automatic selection of dynamic zones (corresponding to isolation switch position). This enables the device to dynamically connect CT to different busbar protection areas, and simultaneously realize the functions of busbar protection and circuit breaker failure trip selection and status monitoring of isolation switch and circuit breaker. Due to its unique measurement principle, the REB670 device requires less master CT than other digital differential protection devices.

ABB busbar protection has a very good supply record and user reputation.

ABB busbar protection devices started with analog relays such as INX2/5, RADSS, REB 101/103, which have been in successful operation for more than 40 years, while ABB digital busbar protection devices REB500 and RED521 have more than 10 years of operating experience. All of these devices create an impressive record: there has never been a misoperation due to device reasons. Today, more than 20,000 busbars around the world are using ABB's busbar protection.