5SHX0660F0002 ABB 可控硅模塊主要參數(shù)

5SHX0660F0002額定通態(tài)平均電流在一定條件下，陽(yáng)極—陰極間可以連續(xù)通過(guò)的50赫茲正弦半波電流的平均值。5SHX0660F0002正向阻斷峰值電壓在控制極開(kāi)路未加觸發(fā)信號(hào)，陽(yáng)極正向電壓還未超過(guò)導(dǎo)能電壓時(shí)，可以重復(fù)加在可控硅兩端的正向峰值電壓。可控硅承受的正向電壓峰值，不能超過(guò)手冊(cè)給出的這個(gè)參數(shù)值。5SHX0660F0002反向陰斷峰值電壓當(dāng)可控硅加反向電壓，處于反向關(guān)斷狀態(tài)時(shí)，5SHX0660F0002可以重復(fù)加在可控硅兩端的反向峰值電壓。使用時(shí)，不能超過(guò)手冊(cè)給出的這個(gè)參數(shù)值。 控制極觸發(fā)電流在規(guī)定的環(huán)境溫度下，陽(yáng)極—陰極間加一定電壓，使可控硅從關(guān)斷狀態(tài)轉(zhuǎn)為導(dǎo)通狀態(tài)所需要的小控制極電流和電壓。維持電流在規(guī)定溫度下，控制極斷路，維持可控硅導(dǎo)通所必需的小陽(yáng)極正向電流。

5SHX0660F0002

5SHX0660F0002采用可控硅技術(shù)對(duì)照明系統(tǒng)進(jìn)行控制具有：電壓調(diào)節(jié)速度快，精度高，可分時(shí)段實(shí)時(shí)調(diào)整，有穩(wěn)壓作用，采用電子元件，5SHX0660F0002相對(duì)來(lái)說(shuō)體積小、重量輕 低。但該調(diào)壓方式存在一致命缺陷，由于斬波，使電壓無(wú)法實(shí)現(xiàn)正弦波輸出，還會(huì)出現(xiàn)大量諧波，形成對(duì)電網(wǎng)系統(tǒng)諧波污染，危害 ，不能用在有電容補(bǔ)償電路中。（現(xiàn)代照明設(shè)計(jì)要求規(guī)定，照明系統(tǒng)中功率因數(shù)必須達(dá)到0.9以上，而氣體放電燈的功率因數(shù)在一般在0.5以下，所以都設(shè)計(jì)用電容補(bǔ)償功率因數(shù)）在國(guó)外發(fā)達(dá)，已有明文規(guī)定對(duì)電氣設(shè)備諧波含量的限制，在國(guó)內(nèi)，北京、上海、廣州等大城市，5SHX0660F0002已對(duì)諧波含量超標(biāo)的設(shè)備限制并入電網(wǎng)使用。采用可控硅技術(shù)對(duì)照明系統(tǒng)進(jìn)行照度控制時(shí)，可通過(guò)加裝濾波設(shè)備來(lái)有效降低諧波污染。近年來(lái)，許多新可控硅元件相繼問(wèn)世，如適于高頻應(yīng)用的快速可控硅，可以用正或負(fù)的觸發(fā)信號(hào)控制兩個(gè)方向?qū)ǖ碾p向可控硅，5SHX0660F0002可以用正觸發(fā)信號(hào)使其導(dǎo)通，用負(fù)觸發(fā)信號(hào)使其關(guān)斷的可控硅等等。5SHX0660F0002可控硅調(diào)光器是目前舞臺(tái)照明、環(huán)境照明領(lǐng)域的主流設(shè)備。5SHX0660F0002在照明系統(tǒng)中使用的各種調(diào)光器實(shí)質(zhì)上就是一個(gè)交流調(diào)壓器，老式的變壓器和變阻器調(diào)光是采用調(diào)節(jié)電壓或電流的幅度來(lái)實(shí)現(xiàn)的，如下圖所示。u1是未經(jīng)調(diào)壓的220V交流電的波形，5SHX0660F0002經(jīng)調(diào)壓后的電壓波形為u2，由于其幅度小于u1，使燈光變暗。在這種調(diào)光模式中，雖然改變了正弦交流電的幅值，5SHX0660F0002但并未改變其正弦波形的本質(zhì)。

5SHX0660F0002

5SHX0660F0002 Main parameters of the ABB SCR module

5SHX0660F0002 Average current in rated on-state The average 50 Hz sinusoidal half-wave current that can be passed continuously between anode and cathode under certain conditions. 5SHX0660F0002 Forward blocking peak voltage When the control pole is open without a trigger signal and the anode forward voltage does not exceed the conductance voltage, the forward peak voltage at both ends of the thyristor can be repeated. The peak forward voltage of the thyristor cannot exceed the parameter value given in the manual. 5SHX0660F0002 Reverse negative peak voltage When the thyristor is in the reverse off state, 5SHX0660F0002 can repeat the reverse peak voltage at both ends of the thyristor. Do not exceed this parameter value given in the manual. At the specified ambient temperature, a certain voltage is added between the anode and cathode to make the thyristor change from the off state to the on-state required small control electrode current and voltage. Maintain current At the specified temperature, the control pole is broken, and the small anode forward current necessary to maintain the thyristor conduction is maintained. 5SHX0660F0002 The use of thyristor technology to control the lighting system has: voltage regulation speed, high accuracy, can be adjusted in real time, a voltage regulator, the use of electronic components, 5SHX0660F0002 is relatively small size, light weight low. However, the voltage regulation mode has a fatal defect, because of the chopper, so that the voltage can not realize the sine wave output, there will be a large number of harmonics, the formation of harmonic pollution to the power grid system, harm, can not be used in the capacitor compensation circuit. (Modern lighting design requirements stipulate that the power factor in the lighting system must reach more than 0.9, and the

5SHX0660F0002

power factor of the gas discharge lamp is generally below 0.5, so it is designed with capacitor compensation power factor) developed in foreign countries, there are clear regulations on the harmonic content of electrical equipment restrictions, in China, Beijing, Shanghai, Guangzhou and other big cities. 5SHX0660F0002 has restricted the use of equipment with excessive harmonic content into the power grid. When the thyristor technology is used to control the illumination of the lighting system, the harmonic pollution can be effectively reduced by installing filtering equipment. In recent years, many new thyristors have been introduced, such as fast thyristors for high-frequency applications, bidirectional thyristors that can be controlled with positive or negative trigger signals in both directions, 5SHX0660F0002 can be switched on with positive trigger signals, and thyristors that are turned off with negative trigger signals, and so on. 5SHX0660F0002 thyristor dimmer is the mainstream equipment in the field of stage lighting and environmental lighting. The various dimmers used in the lighting system are essentially an AC voltage regulator, and the dimming of old transformers and rheostat is achieved by adjusting the amplitude of voltage or current, as shown in the following figure. u1 is the unregulated 220V AC waveform, 5SHX0660F0002 voltage waveform after voltage regulation is u2, because its amplitude is less than u1, so that the light dim. In this dimming mode, although the amplitude of the sinusoidal alternating current is changed, 5SHX0660F0002 does not change the essence of its sinusoidal waveform.

5SHX0660F0002