SPAJ 140 C  |   SPAD 346 C1  | 过流和接地保护装置

型号： SPAJ 140 C

类别： 过流和接地保护装置

成色：全新，非全新

保障：365天

快递：顺丰

库存：有

品牌：ABB

SPAJ 140 C 过流和接地保护装置

SPAJ 140 C提供选择性的辐射馈线短路保护以及接地故障保护。

在直接接地、电阻接地或阻抗接地电力系统中，过流和接地组合保护装置SPAJ 140 C提供选择性的馈线短路保护以及接地故障保护。

该集成保护装置包含一个过流保护单元和一个带跳闸和发信功能的接地保护单元。这类装置还可以用于其它需要单相，两相，或三相过流保护的应用。此外，该装置还包含一个断路器失灵保护单元。

为何选择ABB？

市场上最常使用的数字式保护继电器

易于使用的继电器，基本功能为过流和接地故障保护

成熟技术

SPAJ 140 C数字式继电器保护装置的工作原理主要基于数字信号的处理和控制。它首先通过数据采集系统对电力系统中的模拟信号进行离散化，将连续的模拟信号转变为离散的数字信号。然后，通过数字信号处理技术对采集到的数据进行处理和分析，以判断电力系统的状态是否正常。当检测到故障时，装置会根据预先设定的保护动作条件，通过控制执行器来执行相应的切除操作。

Model: SPAJ 140 C

Category:  overcurrent and ground protection

Finish: New, not new

Guarantee: 365 days

Express: SF Express

Stock: Yes

Brand: ABB

SPAJ 140 C overcurrent and ground protection

The SPAJ 140C provides selective radiation feeder short-circuit protection and ground fault protection.

In direct, resistance or impedance grounded power systems, the combined overcurrent and ground protection SPAJ 140C provides selective feeder short-circuit protection and ground fault protection.

The integrated protection device includes an overcurrent protection unit and a ground protection unit with tripping and signaling functions. These devices can also be used in other applications that require single-phase, two-phase, or three-phase overcurrent protection. In addition, the device includes a circuit breaker failure protection unit.

Why choose ABB?

The most commonly used digital protective relay on the market

Easy to use relay, basic function is overcurrent and ground fault protection

Mature technology

The working principle of SPAJ 140C digital relay protection device is mainly based on digital signal processing and control. Firstly, it discretizes the analog signals in the power system through the data acquisition system, and transforms the continuous analog signals into discrete digital signals. Then, the collected data are processed and analyzed by digital signal processing technology to judge whether the state of the power system is normal. When a fault is detected, the device performs the corresponding cutting operation by controlling the actuator according to the pre-set protective action conditions.