西門(mén)子變頻器選型時(shí)的注意事項(xiàng)： 1、負(fù)載類型和變頻器的選擇：電動(dòng)機(jī)所帶動(dòng)的負(fù)載不一樣，對(duì)變頻器的要求也不一樣。 A：是普通的負(fù)載：對(duì)變頻器的要求為簡(jiǎn)單，只要變頻器容量等于電動(dòng)機(jī)容量即可（空壓機(jī)、深水泵、泥沙泵、快速變化的音樂(lè)噴泉需加大容量）。 B：起重機(jī)類負(fù)載：這類負(fù)載的特點(diǎn)是啟動(dòng)時(shí)沖擊很大，因此要求變頻器有一定余量。同時(shí)，在重物下放時(shí)，會(huì)有能量回饋，因此要使用制動(dòng)單元或采用共用母線方式。 C：不均行負(fù)載：有的負(fù)載有時(shí)輕，有時(shí)重，此時(shí)應(yīng)按照重負(fù)載的情況來(lái)選擇變頻器容量，例如軋鋼機(jī)機(jī)械、粉碎機(jī)械、攪拌機(jī)等。 D：大慣性負(fù)載：如離心機(jī)、沖床、水泥廠的旋轉(zhuǎn)窯，此類負(fù)載慣性很大，因此啟動(dòng)時(shí)可能會(huì)振蕩，電動(dòng)機(jī)減速時(shí)有能量回饋。應(yīng)該用容量稍大的變頻器來(lái)加快啟動(dòng)，避免振蕩。配合制動(dòng)單元回饋電能。 2、長(zhǎng)期低速動(dòng)轉(zhuǎn)，由于電機(jī)發(fā)熱量較高，風(fēng)扇冷卻能力降低，因此必須采用加大減速比的方式或改用6級(jí)電機(jī)，使電機(jī)運(yùn)轉(zhuǎn)在較高頻率附近。 3、變頻器安裝地點(diǎn)必需符合標(biāo)準(zhǔn)環(huán)境的要求，否則易引起故障或縮短使用壽命；與驅(qū)動(dòng)馬達(dá)之間的距離一般不超過(guò)50米，若需更長(zhǎng)的距離則需降低載波頻率或增加輸出電抗器選件才能正常運(yùn)轉(zhuǎn)。
NEW YASKAWA AC SERVO PACK SGDK-20AEA
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Customs services and international tracking provided
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From Canada
NEW YASKAWA AC SERVO PACK SGDK-75AEA
92391 New In Box, Fuji BB3AEA-020 Circuit Breaker, 20 Amp, 3 Phase EA33
FUJI ELECTRIC EA33 NEW 20A AUTO BREAKER BB3AEA-020 EA33
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From United Kingdom
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NEW YASKAWA AC SERVO PACK SGDK-3030AEA
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From Italy
Lot of 2: Fuji Electric Breaker EA33 BB3AEA-020 20 Amp, 220 Volt, 2.5kA, 3 POLE
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From Canada
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Customs services and international tracking provided
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From Germany
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From Germany
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From Hong Kong
NEW YASKAWA AC SERVO PACK SGDK-75AEA
Yaskawa servo driver SGDK-75AEA good in condition for industry use
From Hong Kong
NEW YASKAWA AC SERVO PACK SGDK-3030AEA
OEM ENGINE COMPUTER PROGRAMMED 2005 LINCOLN TOWN CAR 5W1A-12A650-AEA CVC0
Customs services and international tracking provided
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Customs services and international tracking provided
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From France
Kramer FC-7402 SDI to Analog Multibat Converter
