濾波器(qì)

■産品概述product overvlew

PWM逆變器(qì)直接驅動電(diàn)機(jī)時(shí)合産生(shēng)較高(gāo)dv/dt的(de)共橫電(diàn)壓，并由此産生(shēng)軸承電(diàn)流 和(hé)共模溫電(diàn)流以及嚴重的(de)電(diàn)磁幹挑(EMD。特别是(shì)當逆變器(qì)↔通(tōng)過長(cháng)蛾電(diàn)績與電(diàn)機(jī)連接時(shí)，由于電(diàn)纜中分(fēn)布參數(shù)的(de)影(yǐng)響，會(huì)在®電(diàn)機(jī)幽産生(shēng)電(diàn)壓反射現(xiàn)象，從(cóng)而在電(diàn)機(jī)贈會(huì)産生(shēng)2倍以上(shàng)的×(de)過電(diàn)壓，導緻線圖絕繩失敗。度為(wèi)電(diàn)氣的(de)dv/dt滋波器(qì)降低(dī)電(diàn)機(jī)電(diàn)境傳輔☆線效應電(diàn)壓的(de)增大(dà)而衰減率，減少(shǎo)在電(diàn)機(jī)端子(zǐ)上(shàng)所發生(shēng)的(de)峰值電(diàn)β壓。

When a PWM inwerterdirecty drives a motor,it generates a highdvidt common modeε voltape,reaulting in bearing current,common modeleak÷age curent,and severe elecromagnetec interterence (EM)>.Especially when the inverter is connecled to the motor thro§ugha longcable,dueto the influence ot distrbuted parameters in the cable,voltage renectioαn phenomenon wil ccur at the motor end,resulting inmore than twice the overvoltage at₽ the motor end,leading to col insulation tilure.The dvidt titer tor electr ical purposes reduces theattenuation ratecaused by the increase in the transmisδsion line feetvottage of motorcables,andreduces the‍ peak voltage that occurs atthe motor terminals.

■産品應用(yòng)product Applicatior

dw/dt濾波器(qì)是(shì)設計(jì)用(yòng)于保護電(diàn)機(jī)的(de)濾波器(qì)，由于變頻(pín)器(qì)與電(diàn)機(jī)之間(jiān)運行(πxíng)電(diàn)纜過長(cháng)會(huì)引起對(duì)電(diàn)機(jī)産生(shēng)毀滅性影(yǐng‌)響峰值電(diàn)壓。電(diàn)纜的(de)長(cháng)度取決于用(yòng)在變頻(pín)器(qì)中的(de)電(diàn)力半導體(tǐ)的(de↓)開(kāi)關次數(shù)和(hé)電(diàn)機(jī)的(de)大(dà)小(xiǎo)，如(rú)果點看(kàn)短(duǎn)到(dào)2.5米則會(huì)導緻電(diàn)機✔(jī)承受的(de)峰值電(diàn)壓超過電(diàn)機(jī)絕緣系統的(de)額定值。然而，如(rú)果電(diàn)組太長(cháng)則 問(wèn)題更大(dà)，在這(zhè)種情況下(xià)就(jiù)潛要(yào)用(yòng)dv/dt濾波器(qì)來(lái)保護電(diàn)機(jī)不(↓bù)受峰值電(diàn)壓的(de)殿滅性影(yǐng)響

Dv/dtfiter isa filter dasigned to protectmotors.Due to the longrunning Ωcable betweenthefrequency converter andthe motor,itcan causede€structive effects on themotors peakvoltage.The lengthof the cabledependson thenu↓mber ofswitchesof the powersemlconductorusedin thefrequency converterand the size of themotor.I‍fthe distancelsasshort as2.5meters,it will cause thepeakvoltage borne bythemotor to exceed t"herated value ofthemotorinsulation system.However,if the cableis too long.th₽eproblem becomes even greater,inwhichcaseadv/dt filter isneede£dtoprotect the motor from thedestructiveeffects of peakvoltage.

■技(jì)術(shù)規格Tachnical specifications

+最大(dà)工(gōng)作(zuò)電(diàn)壓：400VAC-1140VAC
·額定電(diàn)魂：5-500A+輛(liàng)率：50-60Hz
·防護等級：IP00-IP20絕緣等級：classF₂H
·使用(yòng)環境：-10-+45℃,額定值不(bù)會(huì)降任。最高(gāo)可(kě)達+55℃,在45℃以上(shàng)，每升高(gāo)1℃,額定電 (diàn)流降任2%
·電(diàn)境長(cháng)度：<1000m
+過載電(diàn)流：1.5×額定電(diàn)流，持續605
·噪音(yīn)：≤65dB+溫升：≤70K
+抗電(diàn)強度；鐵(tiě)芯統組3000VAC/50Hz/5mA/10s無飛(fēi)孤擊穿(工(gōng)廠(chǎng)測試)絕緣電(diàn)阻：1000VDC絕×綠(lǜ)阻值100M0
·海(hǎi)拔高(gāo)度不(bù)超過2000米
·運行(xíng)環境溫度-25℃-+45℃,相(xiàng)對(duì)濕度不(bù)垣過90%周國(guó)無有(yǒu)害氣體(tǐ)，無易煙(yān)易焊∞物(wù)品
·周國(guó)環境應有(yǒu)良好(hǎo)的(de)通(tōng)風(fēng)條件(jiàn)，如★(rú)裝在櫃內(nèi)，應加裝通(tōng)風(fēng)設備

■執行(xíng)标準Execution standards

IEC289:1987Reactor
G810229-88Reactor(eqviEC289:1987)J89644-1999 Reactorsusedforsemiconduc₽tor electricaldriving