Y—H系列為全封閉，自扇冷式，船用三相籠式異步電動機，適用于船舶上作驅動各種機械，如泵類、通風機、分離器、液壓機械及其它輔助設備等之用。 

Y—H系列是按照國際電工委員會標準IEC60034-1《旋轉電機 定額和性能》和現行的《鋼質海船入級與建筑規范》設計的。 

電動機也符合以下標準和規范的有關要求。
IEC60034         旋轉電機  
IEC60068         環境試驗 

IEC60072         旋轉電機的尺寸及功率等級
IEC60092         船用電器設備 

電動機還符合下列船級社規范的部分要求。
LR               英國勞氏船級社
GL               德國勞氏船級社  

NK               日本海事協會（日本船級社）  

    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 and other auxiliary equipment. 

The motors are designed accordance with National Standard GB755 “Rotating electrical machines-Rating and 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 and specifications.
IEC60034          Rotating electrical machines 

IEC60068          Basic environmental testing procedures 

IEC60072          Dimensions and 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  

結構簡介 

* 防護等級  IP44 

* 機座、端蓋和軸承蓋 

電動機一般只有一個圓柱形軸伸；根據用戶要求，B3及B35型的電動機可制成兩個軸伸。第二軸伸僅能用聯軸器傳遞額定功率。轉軸材料采用45號優質鋼（GB/T699）。 * 接線盒   

從主軸伸端視之，電動機的接線盒位于機座右側。若接線盒要裝在左側，則必須在訂貨時加以說明。接線盒內有六個接線柱，接線盒蓋內有接線圖，接線標志全部符合IEC60034-8的規定。兩個相鄰導電零件的間隙不小于8毫米；所有漏電距離不小于12毫米。接線盒內另有一個供接地用的接線柱。 * 軸承 

本系列電動機用的軸承型號和規格見表1

Construction 

* Protection    IP44  

* Frame, end shield and bearing cap 

    All made of Grey cast iron HT200 (GB/T9437) and 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 and 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 and 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 and all creepages not less than 12mm.       An extra terminal is provided inside the box for grounding purpose. * Bearing 

The type and size of bearings used in these motors are given in table 1 

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