TVD暂态过电压阻尼器

产品介绍/PRODUCT OVERVIEW

TVD-27.5kV铁路暂态过电压阻尼器是一种专为现代轨道交通牵引供电系统设计的高性能无源电气装置。其具备独特的非线性电气特性一电阻随系统频率升高而增加，电感则相应减小。通过这一特性，可有效抑制电力机车和高速动车组牵引供电系统因断路器操作、受电弓动作及机车过分相等因素引发的暂态过电压。

核心优势/KEY ADVANTAGES

• 抑制系统谐振，保护车载电子设备/Suppresses system resonance and protects onboard electronics
• 降低励磁涌流，防止继电器误动作/Reduces inrush current, preventing relay maloperations
• 降低车体瞬态电位，减小车轴过热风险/Lowers transient voltage on the chassis, minimizing axle overheating risk
• 减缓高分子绝缘材料热老化，延长使用寿命/Slows thermal aging of polymer insulation, elongating lifespan

产品应用/PRODUCT APPLICATION

铁路暂态过电压阻尼器可安装于以下位置:

• 受电弓与电缆组件或母排之间，用于抑制受电弓操作导致的高频振荡，提升系统稳定性;
• 真空断路器出线端，防止断路器操作过电压影响下游设备，保障供电可靠性。

Railway transient overvoltage damper can be installed in the following locations:

• Between the pantograph and the cable assembly or busbar, to suppress high-frequency oscillations caused by pantograph operations and enhance system stability;
• At the outgoing terminal of the vacuum circuit breaker, to prevent switching overvoltages from affecting downstream equipment and ensure reliable power supply.

技术参数/TECHNICAL SPECIFICATIONS

电气性能/ElectricalCharacteristics

系统工作电压:15kV/25kV/27.5kV	Operating Voltage: 15kV/25kV/27.5kV
最大系统电压:32kV	Max Voltage:32kV
系统频率:16 2/3Hz,50Hz	Frequency:16 2/3Hz,50Hz
电感范围:210-310μH@50Hz	Inductance:210 -310μH @50Hz
电阻范围:34-52Ω@100kHz	Resistance: 34-52Ω@100kHz
额定电流:750A	Rated Current: 750A
最大暂态过电压峰值:150kV	Peak Transient Overvoltage:150kV
额定短路电流:25kA，1秒	Short-Circuit Current: 25kA,1s

机械性能/MechanicalCharacteristics

最高运行速度:≤450km/h	Max Operating Speed: ≤450km/h
主体材质:铜	Main material: Copper
绝缘材料:环氧树脂，符合EN45545防火标准	Insulation material: Epoxy Resin (EN 45545 Compliant)
重量:1.0kg	Weight:1.0kg
振动与冲击等级:IEC 61373，Category 1,Class B	Vibration/Shock: IEC 61373, Category 1, Class B
海拔适用:≤4000m	Altitude:≤4000m
工作温度:-40°C~+70°C	Operating Temperature:-40°C to +70°C
相对湿度:可达100%	Humidity: Up to 100%
设计寿命:≥30年	Design Life: > 30 years

基本尺寸/Basic Dimensions