Y—H系列為全封閉，自扇冷式，船用三相籠式異步電動(dòng)機(jī)，適用于船舶上作驅(qū)動(dòng)各種機(jī)械，如泵類、通風(fēng)機(jī)、分離器、液壓機(jī)械及其它輔助設(shè)備等之用。 Y—H系列是按照國際電工委員會(huì)標(biāo)準(zhǔn)IEC60034-1《旋轉(zhuǎn)電機(jī) 定額和性能》和現(xiàn)行的《鋼質(zhì)海船入級(jí)與建筑規(guī)范》設(shè)計(jì)的。 電動(dòng)機(jī)也符合以下標(biāo)準(zhǔn)和規(guī)范的有關(guān)要求。 IEC60034 旋轉(zhuǎn)電機(jī) IEC60068 環(huán)境試驗(yàn) IEC60072 旋轉(zhuǎn)電機(jī)的尺寸及功率等級(jí) IEC60092 船用電器設(shè)備 電動(dòng)機(jī)還符合下列船級(jí)社規(guī)范的部分要求。 LR 英國勞氏船級(jí)社 GL 德國勞氏船級(jí)社 NK 日本海事協(xié)會(huì)（日本船級(jí)社） Introduction Y—H Series are totally-enclosed, fan-cooled three-phase marine motors of the squirrel-cage type. The motors are suitable for driving various machines on ships such as pumps, blowers, separators, hydraulic engines.other auxiliary equipment. The motors are designed accordance with National Standard GB755 “Rotating electrical machines-Rating.performance”and the existing “Rules for the construction of sea-going steel ships.” The motors also comply with the relevant requirements of the following standards.specifications. IEC60034 Rotating electrical machines IEC60068 Basic environmental testing procedures IEC60072 Dimensions.output ratings for rotating electrical machines IEC60092 Electrical installation in ships The motors are also in conformity with part of the specifications of the following Ships Classification Societies. LR Lloyd’s Register of Shipping GL Germanischer Lloyd NK Nippon Kaiji Kyokai 結(jié)構(gòu)簡介 * 防護(hù)等級(jí) IP44 * 機(jī)座、端蓋和軸承蓋 電動(dòng)機(jī)一般只有一個(gè)圓柱形軸伸；根據(jù)用戶要求，B3及B35型的電動(dòng)機(jī)可制成兩個(gè)軸伸。第二軸伸僅能用聯(lián)軸器傳遞額定功率。轉(zhuǎn)軸材料采用45號(hào)優(yōu)質(zhì)鋼（GB/T699）。 * 接線盒 從主軸伸端視之，電動(dòng)機(jī)的接線盒位于機(jī)座右側(cè)。若接線盒要裝在左側(cè)，則必須在訂貨時(shí)加以說明。接線盒內(nèi)有六個(gè)接線柱，接線盒蓋內(nèi)有接線圖，接線標(biāo)志全部符合IEC60034-8的規(guī)定。兩個(gè)相鄰導(dǎo)電零件的間隙不小于8毫米；所有漏電距離不小于12毫米。接線盒內(nèi)另有一個(gè)供接地用的接線柱。 * 軸承 本系列電動(dòng)機(jī)用的軸承型號(hào)和規(guī)格見表1 Construction * Protection IP44 * Frame, end shield.bearing cap All made of Grey cast iron HT200 (GB/T9437).the outer surface of the frame is provided with longitudinal cooling ribs to increase cooling effects. * Shaft extension Standard motors have a cylindrical shaft extension. Motors of B3.B35 type with two shaft extensions are afforded on request, but the second shaft extension can only transmit rated output with direct coupling. The shaft is made of high grade steel No 45 (GB/T699). * Terminal Box The terminal box is arranged at the “right hand side” when looking at the driving end. If the terminal box is to be arranged at the left-hand side, this fact must be specifically stated when placing the order. Six terminal studs are provided in the terminal box.a connecting diagram is shown on the back of the cover. Terminal markings used are in full conformity with IEC publication 34-8.Clearance between two neighboring conducting parts is made not less than 8mm.all creepages not less than 12mm. An extra terminal is provided inside the box for grounding purpose. * Bearing The type.size of bearings used in these motors are given in table 1