ABB COM0034 2RCA023019A0004C 高压产品配电保护与控制电压保护持续时间为毫秒级或更短

品牌：ABB

型号：COM0034 2RCA023019A0004C

名称：高压产品配电保护与控制电压保护

质保：一年

联系电话：18059884797

详细介绍

COM0034 2RCA023019A0004C 高压产品配电保护与控制电压保护

过电压指峰值大于正常运行下大稳态电压的相应峰值的任何电压。在工程上，它指一切可能对设备造成损害的危险电压。因此在工程中，一些虽然大于设备正常运行电压峰值但不足以危及设备正↓无识别结果皮排除在外。过电压包括:
(1) 瞬态过电压，持续时间为毫秒级或更短，是避雷器的主要防护对象。
(2)暂态过电压或短时过电压，持续时间相对较长, 一般介于0.1s和1s之间。
瞬态过电压的来源主要有:雷击、开关操作、静电放电和核爆炸。在通信局站，主要是雷电过电压或雷击过电压。暂态过电压主要有:转移过电压、断零过电压、断线谐振过电压和中性线漂移形成的过电压。此外，空载线路的电容效应、不对称接地故障和突然甩负荷也可能产生危险的过电压。 ABB COM0034 2RCA023019A0004C 高压产品配电保护与控制电压保护持续时间为毫秒级或更短

Overvoltage refers to any voltage whose peak value is greater than the corresponding peak value of the maximum steady-state voltage under normal operation. In engineering, it refers to all dangerous voltages that may cause damage to equipment. Therefore, in engineering, some devices that are greater than the normal operating voltage peak but not sufficient to endanger the positive and negative identification results of the equipment are excluded. Overvoltage includes:
(1) Transient overvoltage, with a duration of milliseconds or less, is the main protective object of lightning arresters.
(2) Transient overvoltage or short-term overvoltage, with a relatively long duration, generally between 0.1s and 1s.
The main sources of transient overvoltage include lightning strikes, switch operations, electrostatic discharge, and nuclear explosions. At communication bureau stations, it is mainly lightning overvoltage or lightning stroke overvoltage. Transient overvoltage mainly includes: transfer overvoltage, zero break overvoltage, line break resonance overvoltage, and overvoltage formed by neutral line drift. In addition, the capacitance effect, asymmetric grounding faults, and sudden load shedding of no-load lines may also generate dangerous overvoltage.
ABB COM0034 2RCA023019A0004C 高压产品配电保护与控制电压保护持续时间为毫秒级或更短