Low voltage surge protective devices - part 21: surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods.
低压电涌保护装置。第21部分:与电信和信令网络连接的电涌保护装置。性能要求和试验方法。
The distributor's second job is to distribute each high-voltage surge to the correct spark plug at the correct time by means of the distributor rotor and cap and secondary wiring.
分电器的第二个作用是通过分火头,旁电极和辅助线路,将高压电流准时分配给相应的火花塞。
This spark is provided by a high-voltage electrical surge jumping across the gap of the spark plug that is ideally positioned in the combustion chamber.
火花是由一个高电压的电涌跳过火花塞间隙而产生的,火花塞是恰当地安装在燃烧室中的。
The major function of variators of ZnO is to detect and suppress surge voltage and over voltage without destroying themselves.
氧化锌压敏电阻器的主要功能是探测和抑制反复出现的浪涌电压及过电压而自身不会破坏。
However, Applying a voltage step to a ceramic capacitor causes a large current surge that stores energy, in the inductances of the power leads.
然而,实际应用中的电压阶跃在陶瓷电容上可能产生较大的浪涌电流,并在电源电感中贮藏能量。
Resistance current measurement of zinc oxide surge arrestor (MOA) under operating voltage possesses important significance of reflecting the operation state of MOA and whether it incurred damping.
在运行电压下测量氧化锌避雷器的阻性电流,对于反映MOA是否受潮和其运行的状态具有重要意义。
The surge load of Synchronous Radiation Fitting(SRF) power supply system may cause voltage fluctuation of distribution network.
同步辐射装置(SRF)供电系统的冲击负荷会引起配电网络电压波动。
The Metal ZnO Arrester (MOA) are important over-voltage protection device. They are widely used in electric power system due to their excellent nonlinear and high surge absorbing capability.
氧化锌避雷器(MOA)是一种重要的过电压保护电器,由于它具有优越的非线性与保护性能而在电力系统中得到了广泛的应用。
Transient and surge are the instant aberrance of the voltage and electric current on the simple alternating current wave circuit. surge and harmonic wave are the main manifestation.
瞬变和浪涌是正弦交流波电路上电压与电流的一种瞬时态的畸变。浪涌、谐波为主要的表现形式。
A new electrode and metal oxide surge arrester (MOA) with series air gap is developed, the gap is a pure air one and is composed by high voltage piercing electrode and MOA in itself.
研制了一种由高压穿刺电极和避雷器本体构成的纯空气间隙金属氧化物避雷器。
The inverter uses opetimal phase angle control scheme to suppress the surge voltage during the commutation of current.
为了抑制电流换相期间的浪涌电压,逆变器采用最佳相角控制。
Lightning stroke is one of the important reasons that result in power failure. Tower lightning surge response performance is the important factor deciding transmission line lightning over-voltage.
雷击是导致输电线路故障的重要原因之一,杆塔的雷电冲击响应特性是决定输电线路雷电过电压的重要因素。
The ZnO non-linear resistance is used in many power electronics circuit to protect against transient over voltage and surge energy.
氧化锌非线性电阻广泛用于电力系统过压保护和浪涌能量吸收。
According to the property that the surge impedance relay is realized by the ratio of voltage and current travelling waves, the relay's algorithm based on wavelets is present.
针对波阻抗方向继电器利用初始电压和电流行波的比值构成的特点,提出了基于小波变换的继电器算法。
The principle of the soft starter is reducing the voltage applied to the stator of the induction motor by control the triggering angle of the thyristors in order to limit the starting current surge.
本文研究了三相感应电动机软起动器,主电路由三组反并联的晶闸管构成。通过控制晶闸管的触发角,可降低三相感应电动机定子电压,从而达到抑制起动电流冲击的目的。
About current surge when start in wide voltage, corresponding control circuit of start-up is designed in this paper.
对于宽电压范围启动过冲问题,本位设计出一种防止过冲的启动控制电路。
Suppression of Inductive Switching or Other Transient Events Such as EFT and Surge Voltage at the Circuit Board Level.
抑制各种感性负载切换或各种瞬间噪声在电路板中产生的EFT和浪涌电压。
The current and voltage response of surge discharge circuit to impulse flashover voltage test system is analyzed.
对电力电缆故障冲击高压闪络测试(简称冲闪测试)系统的放电响应进行了研究。
Finally, a practical calculation example of clamping the voltage of low voltage power line under the surge and effusion surge current by metal oxide varistor is given.
最后计算了在交流电源中用氧化锌压敏电阻对浪涌进行限幅和泻流的一个实例。
As the results prove, the circuit has a simple structure, a high linearity of the input and the output, and strong power for controlling surge voltage.
结果表明,电路结构简单,输入输出线性度高,浪涌电压抑制能力强。
The reflection and refraction of traveling wave are quite complicated at the sheath-crossing point of high voltage power cable, due to its remarkably noncontinuous surge impedance.
高压电缆的金属护套交叉互联导致行波在多个波阻抗不连续点产生了复杂的折反射行为,这对高压电缆线路的行波故障测距产生很大的影响。
The HTS 1600 MKII also features an easy-to-read digital LED meter displaying AC voltage; surge-protected phone and coax lines; and an extra-long 8 ft.
高温超导1600还设有一个易于阅读的LED数字仪表显示对谈电压,浪涌庇护电话和同轴电缆线;
But the invasion of lightning surge may lead its failure due to its low voltage withstand level which may affect the normal service power system.
微机保护系统是电力系统的重要组成部分,但由于其耐压水平低,雷电波侵入电源系统时易导致设备的损坏,严重影响了电力系统的正常运行。
It has many remarkable advantages such as simple auxiliary circuit, realizing ZVS in the wide load range, no voltage spike and surge of the transformer secondary side and easy to be controlled.
与基本ZVS三电平变换器相比,该变换器具有辅助网络简单、实现零电压范围宽、副边无电压过冲和占空比丢失以及控制方式灵活等优点。
ZP-PS series socket power surge protector is designed for communication, electronic equipment in the operation of over-voltage and lightning induction frequency.
ZP-PS系列插座式电源浪涌保护器是专门为通信、电子设备在操作过电压和雷电感应频繁的场合而设计的。
A compact and well performance soft star circuit is designed for monolithic DC-DC converter to eliminate strike-voltage and depress surge-current.
设计了一款用于单片集成dc - DC转换器的简洁而高效的软启动电路,该电路消除了芯片启动时的过压冲击并有效地降低了浪涌电流。
As the main appliance for overvoltage protection in electric system, the characteristic of Metal Oxide Surge Arresters (MOA) is decided by the unit residual voltage of non linear resistance.
金属氧化物避雷器作为电力系统过电压保护的主要电器,其保护特性非线性电阻片的残压决定。
As the main appliance for overvoltage protection in electric system, the characteristic of Metal Oxide Surge Arresters (MOA) is decided by the unit residual voltage of non linear resistance.
金属氧化物避雷器作为电力系统过电压保护的主要电器,其保护特性非线性电阻片的残压决定。
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