自营ABB xVC724BE 3BHEO09017R0102 通道隔离模块

易卖工控网（www.ymgk.com）提供”ABB xVC724BE 3BHEO09017R0102 通道隔离模块”，产品详情：品牌/厂家：ABB、型号：xVC724BE、成色：全新、货期：现货 1天内发货、保修：180天，更多产品详情就上易卖工控网。

自动调度励磁的组成部件有机端电压互感器、机端电流互感器、励磁变压器;励磁设备需求供给以下电流，厂用AC380v、厂用DC220v控制电源.厂用DC220v合闸电源;需求供给以下空接点，自动开机自动停机并网（一常开，一常闭)增，减;需求供给以下模拟信号，发电机机端电压100V，发电机机端电流5A，母线电压100V，励磁设备输出以下继电器接点信号;励磁变过流，失磁，励磁设备失常等。

励磁控制、维护及信号回路由灭磁开关，助磁电路、风机、灭磁开关偷跳、励磁变过流、调度器缺陷、发电机工况失常、电量变送器等组成。在同步发电机产生内部缺陷时除了有必要解列l外，还有必要救活磁，把转子磁场尽快地减弱到***程度，保证转子不过的情况下，使灭磁时刻尽可能缩短，是灭磁设备的主要功能。根据额外励磁电压的巨细可分为线性电阻灭磁和非线性电阻灭磁。

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由于采用微机计算机用软件结束的自动调度励磁设备有明显利益，许多国家都在研发和试验用微型机计算机配以相应的外部设备构成的数字自动调度励磁设备，这种调度设备将能结束自适应***佳调度。


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The components of automatic excitation regulation include organic terminal voltage transformer, machine terminal current transformer, and excitation transformer; The excitation device needs to provide the following current: auxiliary AC380v, auxiliary DC220V control power supply, and auxiliary DC220V closing power supply; The following empty contacts need to be provided for automatic startup, automatic shutdown, and grid connection (one normally open, one normally closed) increase and decrease; The following analog signals need to be provided: the generator terminal voltage is 100V, the generator terminal current is 5A, the bus voltage is 100V, and the excitation device outputs the following relay contact signals; Excitation transformer overcurrent, loss of excitation, abnormal excitation device, etc.

The excitation control, protection, and signal circuit consists of a deexcitation switch, auxiliary circuit, fan, deexcitation switch tripping, excitation transformer overcurrent, regulator failure, abnormal generator operating conditions, and power transmitter. When an internal fault occurs in a synchronous generator, in addition to being disconnected, it is also necessary to extinguish the excitation and reduce the rotor magnetic field to the minimum extent as soon as possible, ensuring that the rotor cannot pass through and shortening the excitation time as much as possible. This is the main function of the excitation suppression device. According to the rated excitation voltage, it can be divided into linear resistance demagnetization and nonlinear resistance demagnetization.

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Due to the significant advantages of using microcomputer software to achieve automatic regulation excitation devices, many countries are developing and testing digital automatic regulation excitation devices composed of microcomputer computers and corresponding external equipment. This regulation device will achieve adaptive optimal regulation.