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主要用于起重機設備中匹配YZR系列電動機的S3、S4、S6工作制的通用電阻器，它適用于交流50Hz電壓至660V的電路中作為電動機的起動、調整及制動電阻。

 注：(1)帶有外殼的代號為“X”，防護等級為IP23，適用于戶外防雨及戶內安全防護(不帶外殼則無“X”的代號)。
       (2)電阻元件代號“B”—ZB1及ZB2康銅板形元件：“Y”鉻鋁圓形元件；“J”ZJ1鐵鉻鋁齒形元件；“D”ZD1鐵鉻鋁小波浪形元件。
       (3)電動機極數：“6”為6極；“8”為8極；“10”為10極。
       (4)通電持續率：TD25%為“2” ；TD40%為“4” ；TD60%為“6” 。
       (5)控制系統代號：“T”—凸輪控制器，無一相開路；“K”—凸輪控制器，有一相開路；“Q”—PQR10型、PQD6402型升降控制屏；“S”—PQS型升降控制屏；“Sf”—PQS型升降控制屏；“Y”—PQY型升降控制屏、PQD6401型平移控制屏，無一相開路；“L”—PQY型平移控制屏，有一相開路；“Z”—PQZ型抓斗控制屏。
注：功率、電流、電阻、電壓可隨客戶需求訂做。

RY52、RY54、RY56系列起動調整電阻器:
起動調整電阻器:
RY52-160M1-6/1B(YZR160M1-6)
RY52-160M2-6/2B(YZR160M2-6)
RY52-160L-6/2B(YZR160L-6)
RY52-180L-6/3(YZR180L-6)
RY52-200L-6/4(YZR200L-6)
RY52-225M1-6/4(YZR225M1-6)
RY52-225M-6/4(YZR225M-6)
RY52-225M2-6/6(YZR225M2-6)
RY52-280S-6/6(YZR280S-6)
RY52-280M-6/6(YZR280M-6)
RY52-160L-8/2B(YZR160L-8)
RY52-180L-8/2B(YZR180L-8)
RY52-200L-8/3(YZR200L-8)
RY52-225M1—8/4(YZR225M-8)
RY52-225M-8/4(YZR225M-8)
RY52-280M-8/7(YZR280M-8)
RY52-225M2-8/5(YZR225M2-8)
RY52-280S-8/5(YZR280S-8)
RY52-315S-8/8(YZR315S-8)
RY52-315M-8/10(YZR315M-8)
RY52系列RY52-280S-10/5(YZR280S-10)
RY52-280M-10/5(YZR280M-10)
RY52-315S-10/6(YZR315S-10)
RY52-315M-10/9(YZR315M-10)
RY54-160M1-6/2B(YZR160M1-6)
RY54-160M2-6/2B(YZR160M2-6)
RY54-160L-6/3B(YZR160L-6)
RY54-180L-6/4(YZR180L-6)
RY54-200L-6/4(YZR200L-6)
RY54-225M1-6/5(YZR225M1-6)
RY54-225M-6/5(YZR225M-6)
RY54-225M2-6/6(YZR225M2-6)
RY54-280S-6/8(YZR280S-6)
RY54-280M-6/9(YZR280M-6)
RY54-160L-8/2(YZR160L-8)
RY54-180L-8/3(YZR180L-8)
RY54-200L-8/3(YZR200L-8)
RY54-225M1—8/5(YZR225M-8)
RY54-225M-8/4(YZR225M-8)
RY54-280M-8/8(YZR280M-8)
RY54-225M2-8/6(YZR225M2-8)
RY54-280S-8/5(YZR280S-8)
RY54-315S-8/8(YZR315S-8)
RY54-315M-8/11(YZR315M-8)
RY54-280S-10/6(YZR280S-10)
RY54-280M-10/6(YZR280M-10)
RY54-315S-10/8(YZR315S-10)
RY54-315M-10/9(YZR315M-10)
RY56-160M1-6/2B(YZR160M1-6)
RY56-160M2-6/2B(YZR160M2-6)
RY56-160L-6/2(YZR160L-6)
RY56-180L-6/3(YZR180L-6)
RY56-200L-6/5(YZR200L-6)
RY56-225M1-6/6(YZR225M1-6)
RY56-225M-6/6(YZR225M-6)
RY56-225M2-6/7(YZR225M2-6)
RY56-280S-6/8(YZR280S-6)
RY56-280M-6/9(YZR280M-6)
RY56-160L-8/2B(YZR160L-8)
RY56-180L-8/3B(YZR180L-8)
RY56-200L-8/4(YZR200L-8)
RY56-225M1—8/6(YZR225M-8)
RY56-225M-8/4(YZR225M-8)
RY56-280M-8/9(YZR280M-8)
RY56-225M2-8/6(YZR225M2-8)
RY56-280S-8/6(YZR280S-8)
RY56-315S-8/10(YZR315S-8)
RY56-315M-8/12(YZR315M-8)
RY56-280S-10/6(YZR280S-10)
RY56-280M-10/6(YZR280M-10)
RY56-315S-10/9(YZR315S-10)
RY56-315M-10/10(YZR315M-10)