ABB HIEE401782R0001 LTC391AE01 输入模块电源的保护功能

【产品详情】

HIEE401782R0001 LTC391AE01总之，输入模块的电源是控制卡模块的重要组成部分，需要根据实际应用场景和控制要求来选择合适的电源类型和规格，以保证设备的稳定性和可靠性。

HIEE401782R0001 LTC391AE01输入模块电源的保护功能通常包括过载保护、短路保护、欠压保护和过压保护等。主变压器中性点零序过流、间隙过流和零序过压，是保护设备本身引出线上的接地短路故障的，一般是作为变压器高压侧110——220千伏系统接地故障的后备保护，零序电流保护，是变压器中性接地运行时的零序保护;而零序电压保护是变压器中性点不接地运行时的零序保护;而间隙过流则是用于变压器中性点以放电间隙接地的运行方式中。失灵保护又称近后备保护。当故障元件的继电保护动作发出跳闸脉冲后，而元件本身的断路器拒绝跳闸时，失灵保护动作，以较短时限切除夫灵开关所连接母线上的其他元件断路器，使停电范围限制在最小范围内，从而提高系统稳定性和供电的可靠性。 

ABB HIEE401782R0001 LTC391AE01 输入模块电源的保护功能

【英文介绍】

HIEE401782R0001 LTC391AE01 In short, the power supply of the input module is an important part of the controller card module. The power supply type and specifications should be selected according to the actual application scenario and control requirements to ensure the stability and reliability of the device.

HIEE401782R0001 LTC391AE01 Input module power supply protection usually includes overload protection, short circuit protection, undervoltage protection and overvoltage protection. The main transformer neutral zero sequence overcurrent, gap overcurrent and zero sequence overvoltage are to protect the grounding short circuit fault on the leading line of the equipment itself, and are generally used as the high voltage side of the transformer. - Backup protection for grounding fault of 220 kV system, zero sequence current protection, zero sequence protection for neutral grounding operation of transformer; The zero sequence voltage protection is zero sequence protection when the neutral point of the transformer is not grounded. The gap overcurrent is used in the operation mode where the neutral point of the transformer is grounded by the discharge gap. Failure protection is also called near backup protection. When the relay protection action of the faulty component sends out the trip pulse, and the circuit breaker of the component itself refuses to trip, the failure protection action, with a short time to cut the other components of the bus connected to the fuling switch circuit breaker, so that the power failure range is limited to the minimum range, thereby improving the stability of the system and the reliability of the power supply.

ABB HIEE401782R0001 LTC391AE01 输入模块电源的保护功能

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