1LG0说明书

1LGO系列（IP55）三相异步电动机1LGO Series（IP55）three phase asynchronousmotor技术说明SPECIFICATION西门子电机（中国）有限公司Siemens Standard Motors Ltd.1 说明1.1 应用范围标准电机使用规范：标准电机具有IP55 防护等级（见铭牌标注），适用于灰尘及潮湿的工作环境。

如果电机安装或储存于户外，有必要增加相应的防护装置，以避免受长期强烈的阳光暴晒、雨水的侵蚀、以及冰雪和灰尘对电机造成的影响。

如果有必要，请咨询制造工厂或相关的技术部门。

电机适用于热带地区，参考标准：冷却环境温度40℃，相对湿度60%。

环境温度-20℃ (40)海拔高度≤1000m如果使用环境条件和以上不一样，电动机铭牌必须作相应的标示。

本系列电机符合GB18613-2006《中小型三相异步电动机能效限定值及能效等级》标准，能效等级为3级，具体规格的能耗指标参见铭牌。

1.2结构及运行模式电机结构型式:1LG0电机为自冷却(带风扇)型式电机。

在使用时必须确保电机具有足够的冷却风量，该要求可以通过独立驱动风扇或风机来达到，在安装风扇时必须确保风机的风向必须与电机正常冷却的风向一致。

标准电机底脚和机座是浇铸一体的。

.2 运输及储存1滚动轴承：当电机从入库一直到开始调试的时间超过4年，电机所装配的“滚动轴承”必须加以更换。

过长的储存时间将会对电机的使用寿命造成一定的影响。

加工表面(法兰表面，轴端表面等)必须做防腐蚀处理，如必要，对绝缘电阻进行测量，详见3.5。

3 调试3.1 安装电机安装完毕后必须将吊环拧紧或拆除。

电机轴朝下安装，建议在风罩端增加相应的防护措施以防止异物通过风扇罩进入。

电机轴朝上安装，一定要安装由设备运营商提供的防护盖，以防止液体顺轴进入电机。

低噪音运行：联轴器和联动件（联轴器，滑轮、风扇）的严格对齐和良好的平衡是电机低噪音低振动运行的必要条件。

如有必要，整个电机和联动件应整体校动平衡。

3.2 接线盒1LG0电机出线盒顶部部分可以作4×90度方向旋转。

3.3 动平衡，联动部件安装及拆卸联动机件（联轴器，皮带轮，齿轮联动装置等）应该使用相应的专业工具(如图1)。

标准电机转子动平衡方式为半键平衡。

在安装联动件时必须特别注意!动平衡方式在电机铭牌上有标注（H表示半键平衡，F表示全键平衡,N 表示不带键平衡）。

如联动装置是半键平衡的话,导向键探出的可见部分一定要去除(见图2)。

2如果电机在不安装联动装置的情况下启动，必须确保联接键不至于甩出造成危险。

电动机接线盒内接线板上有6个接线柱对应电机内绕组引出线。

接电源线对应相序，具体标记如表1。

表1相序 ABC 头 U1V1W1尾 U2V2W2按电动机铭牌规定接法，接成△或Y 。

如电机存在A11、A12、A60、A61、A72、K45选项中的一个或几个，其引线端标识见下图。

3注意: 当出线盒进线电缆口由密封浇铸外壳构成时，密封口必须用适当的方式打开(如图 3)。

特别注意在打开电缆口的同时避免对接线盒内的接线板，电缆线连接等造成破坏！适配器一定要旋进，确保和PTC温度传感器连接！接线盒一定要密封，以防尘防水。

系统电压和频率必须和铭牌所列数据一致，电压和频率波动范围分别为±5%和±2%，无需降低输出功率。

接线盒连接和排列必须和接线盒内所提供的接线图一致。

接地线必须与具有当使用导线夹时，须将导线布置成使线夹两侧保持水平。

即当使用线夹时，单根导线尾端必须弯成U型或者套上电缆接线头（如图4）。

这同样适用于绿-黄接地保护和外部接地线（如图5）。

接线盒接线板接线时旋转拧紧力矩请参考图6。

防冷凝加热器在电机运行的情况下不可使用。

3.5 检查绝缘电阻在初次启动电机前或者经过长时间（6个月）停机后，必须对电机绕组的绝缘电阻进行测量。

绕组绝缘电阻测量完成后的短时间内，接线端子还可能带有一定的危险高电压，请勿直接触摸。

绝缘电阻：最小绝缘电阻：新电机或绕组维修后的电机对地电阻为10兆欧.临界电阻：临界电阻的计算方法为额定电压乘以系数0.5，如额定电压690V电机临界电阻可计算如下临界电阻= 0.69 kV * 0.5 Mohms/kV =0.345Mohms测量方法：最小绝缘电阻的测量：绕组对地电阻的测量可以通过对绕组施加500V 直流电压来测量，绕组温度需保证在25℃±15℃。

临界电阻的测量：临界电阻的测量必须在电机运行温度的情况下对绕组施加500V直流电压。

检查：当电机在长时间停机或储存后，最小电阻值小于10兆欧时，可能是由4于环境潮湿引起的，此时需要将绕组进行烘干处理。

电机经过长时间运行后，最小电阻值可能降低至临界电阻。

只要测量值不再低于临界电阻值，电机可以继续使用，否则应立刻停止运行。

必须找出导致该结果的原因，并对绕组或绕组部分进行修复、清理及烘干。

3.6 调试当变频器驱动电机时，干扰程度大小取决于变频器的类型（种类，干扰控制措施及制造商）。

制造商提供的变频器使用说明书中有关电磁兼容部分的内容必须时刻注意。

如果推荐使用屏蔽式电缆线的话，当屏蔽层和电机接线盒的大面积可传导性连接金属部分接触时，屏蔽层将会产生理想屏蔽的效果。

变频器会导致电机传感器（如PTC温度传感器）产生谐波电压。

如果使用变频器驱动电机，转速超过电机额定转速时，必须注意电机的机械极限转速(参见电机安全转速IEC60034-1)。

抗干扰：如电机带有内置传感器（如：PTC温度传感器）,用户应选择适当的传感器信号线（最好是屏蔽线）以及测量装置。

调试前必须严格遵守本说明（安全调试说明）及各相关说明书中所列的各项数据及建议！4 维护安全防范5注意：电机配有排水孔时，排水孔须经常打开，排出电机内部积水，排水孔出口应在电机的最低处！装配新轴承，润滑脂类型：正常运行条件下，轴承应水平安装。

密封轴承在使用寿命期内不必更换润滑酯。

预加润滑油酯（不带加排油装置）的开启式轴承，机座号180-280的电机运行5000小时应定期更换润滑酯。

定期加润滑油酯（带加排油装置）的开启式轴承，机座号315的2极电机运行3000小时、4-6极电机运行5000小时需加润滑酯，机座号355的2极电机运行2000小时、4-6极电机运行4000小时需加润滑酯。

应保证电动机在运行过程中良好的润滑。

运行中发现轴承过热或润滑脂变质时应及时更换润滑脂。

更换润滑脂时，应清除旧的润滑脂，并用汽油洗净轴承盖的油槽，然后将润滑脂填充轴承内外圈之间空腔1/2（对2级）或2/3（对4.6级）。

当轴承寿命终了时，电动机运行的振动及噪声将明显增大，检查轴承的径向游隙如达到下表数值时即应更换轴承。

轴承内径 (mm) 20-30 35-50 55-80 85-120 极限磨损游隙 (mm) 0.10 0.15 0.20 0.306更换新轴承的规格型号应与旧轴承相符。

注意：使用时不允许超过电机的最大悬臂力（见产品样本）！除考虑总运行时间外，由于润滑脂的老化失效，滚动轴承必须每3年进行更新。

在特殊条件下使用的电机，（如：立式安装、强振动、负载波动剧烈、频繁逆向操作等），轴承的更换相对于上述正常运行情况应更加频繁。

电机标准润滑脂类型：UNIREX N3 (Esso)，合成润滑脂符合DIN 51825-K3N 规定。

特殊润滑脂在电机铭牌上都有标示或在单独的润滑脂铭牌有标示。

拆下电机的必要部分，用专业的工具将滚动轴承拉出，(如图1)。

清洁轴颈！均匀加热滚动轴承80-100℃后压入，避免对轴承的重击（如用锤子等物敲打），所有旧的密封件（如轴封等）也应该更新。

如果轴封为非弹性轴封，更换时也应使用相同类型的轴封。

端盖螺栓的旋紧力矩大小参考相关列表再润滑装置：电机配有再润滑装置时，请注意铭牌上所标示的润滑说明！轴承的再润滑应在电机的运行过程中进行！71 Description4.1 Field of ApplicationPrescribed use of standard motors:The standard motors are provided with degree of protection IP55 (see rating plate) and can be used in a dusty and damp environment. A suitable superstructure or an additional cover is recommended if the motors are deployed or stored outdoors to avoid the long-term effects of intense, direct sunshine, rain, snow, ice and dust. If necessary, please consult the manufacturer or concerned technical department. The motors are tropic proof. Guide value: 60% relative humidity at a coolant temperature of 40℃.Ambient temperature -20℃ (40)Site altitude ≤1000mIf the ambient conditions deviate, this must be shown1on the ratings plate; these data then apply.1LG0 series motor accord with GB18613-2006《Limited values of energy efficiency and class of energy conservation of small and medium three-phase asynchronous motors》, Energy efficiency of the motors are class 3, energy cost data see rating plate.4.2 Construction and mode of operation.Motor types:1LG0 motors are self-ventilated by fan mounted on and driven by rotor. The customers must ensure that there is sufficient cooling in operation, either through a separately driven fan or, with fan drives, through the driven fan. When the fan is mounted, make sure that the fan hub does notobstruct the flow of air over the cooling ribs.In the case of the base motors the feet are cast on the motor housing.5 Transportation and Storagereplaced if the period from the time the motor is delivered up until it is commissioned exceeds 4 years. The service life of the motor unit is considerably reduced the longer it is stored.Finished surfaces (flange surfaces, ends of shafts, etc.)2should be treated with an anti-corrosion agent.If necessary, the insulation resistance of the winding must be measured, see Section 3.5.6 Commissioning6.1 InstallationLifting eyes that are screwed in place must be tightened or removed after the motor has been installed.If the motor is installed vertically with the shaft end facing downwards, a protective shield is recommended for the ventilator hood in order to prevent the ingress of foreign bodies.If the shaft end is facing upwards, a cover must be installed provided by the equipment operator to prevent the ingress of liquids along the shaft.Quiet running: Exact alignment of the coupling and a well-balanced transmission element (coupling, pulleys, fans, etc.) are essential for quiet vibration-free running. If necessary, the whole motor and transmission element should be balanced.6.2 Terminal boxTerminal box is mounted in basic design on top of the motor, and can be turned by 4×90 to allow cable entry from each direction.6.3 Balancing, transmission elementsA suitable device should always be used for fitting and removing the transmission elements (couplings, pulleys,3pinions, etc.) (Fig.1).As standard, the rotors are dynamically balanced with the half feather key.When fitting the transmission element, keep the type of balance in mind!The balance status is indicated on the ratings plate (H=Half, F=Full-key balancing, N=Balancing without feather key).If the transmission elements are balanced with a half feather key, the visible, protruding part of the feather keyelement attached, the feather key should be secured to prevent it being thrown out to cause risks.There are six wiring terminals on the connection panel in the motor connection box corresponding to winding outgoing line in the motor. The specific notes of connecting power line to the phase-sequence are in Table 1.Table 1Phase-sequence A B C4Head U1 V1 W1 end U2 V2 W2 According to connection requirement referred on motor rating plate, the following pictures show the connection “△” or “Y”.If the motors with the option A11、A12、A60、A61、A72 or K45, the indication of terminal block are shown in the following table.NOTE: If the openings for cables and wiring in the terminal box are sealed with a “cast skin” (knockout),The seal end must be opened in the appropriate manner (see Fig 3).Care must be taken not to damage the terminal box, the terminal board, the cable connections, etc. inside the terminal box ！5An adapter must be screwed in for PTC thermistor connections！The terminal box must be sealed so that it is dust and water-tight.The system voltage and the frequency must agree with the data given on the rating plate. Voltage or frequency deviations are of ±5% and ±2% respectively from the rated voltage and frequency values are permitted without the need to derate the output frequency. The connection and arrangement of the terminal links must agree with the diagram provided in the terminal box.Wherever terminal clips are used , arrange the conductors so that the clips are virtually level on both sides. This method of connection means that the ends of single conductor must be bent in the shape of a U or be fitted with a cable lug (see Fig.4). This also applies to the green-yellow protective earthing conductor and the outer earthing conductor (see Fig.5)Please refer to Fig. 6 for the tightening torques for the screwed electrical connections-terminal board connections.The anti-condensation heater must not be switched on during operation.6.5 Insulation resistance inspectionThe insulation resistance of the windings must be measured prior to initial startup of the motor, or after long periods of storage or standstill (approx.6 months).6While the measurement is being taken and immediatelyafterwards, some of the terminals carry dangerous voltages and must not be touched.Insulation resistance:The minimum insulation resistance of new, cleaned or repaired windings with respect to ground is 10 Mohms.The critical insulation resistance Rcrit is calculated first by multiplying the rated voltage UN, e.g. 0.69 kVAC, with the constant factor (0.5 Mohms/kV):Rcrit= 0.69 kV * 0.5 Mohms/kV =0.345Mohms MeasurementThe measurement of the minimum insulation resistance: the windings to ground is measured with 500V DC. The winding temperature should then be kept 25℃±15℃.The measurement of the critical insulation resistance: it should be measured with 500V DC with the winding at operating temperature.CheckingIf the minimum insulation resistance of a new, cleaned or repaired motor, which has been stored or at standstill for a prolonged period of time, is less than 10 Mohms, this may be due to humidity. The windings must then be dried.After long periods of operation, the minimum insulation resistance may drop to the critical insulation resistance. As long as the measured value does not fall below the calculated value of the critical insulation resistance, the motor may continue in operation. If it does, the motor must7be stopped immediately.The cause must be determined, and the windings or winding sections repaired, cleaned or dried as necessary.6.6 Commissioningemittedto a greater or lesser degree, depending on the converter version concerned (type, interference suppression measures, manufacturer). The instructions of the converter manufacturer regarding electromagnetic compatibility must be heeded at all times.If the use of a shielded motor cable is recommended, the shield will have the greatest effect if it is conductively connected over a large area on the metal terminal box of the motor (with a screwed metal conduit thread). Noise voltages may occur on the sensor leads of motors with integrated sensors (e.g. PTC thermistors) as a result of the converter.If the motor is operated on a converter at speeds that exceed the rated speed, the mechanical critical speeds (safe operating speed IEC 60034-1) must be observed.Noise immunity: If the motor has an integrated sensor (e.g. a PTC thermistor), the owner is responsible for8ensuring adequate noise immunity by choosing a suitable sensor signal lead (possibly with shielding, Connected like the motor supply lead) and evaluator.The data and recommendations specified in all the instructions supplied (“Information on safety and commissioning”), and in all other related instructions, must always be observed prior to commissioning！7 Maintenance9NOTE: Where motors are fitted with condensed water openings, they should be open always to let any accumulated water drain away.Condensed water openings should always be at the lowest point of the motor！Fitting new bearings, type of greaseUnder normal operating conditions, with horizontally mounted motors and the following coolant temperatures and motor speeds, the bearings should be changed at the intervals [h] specified in the catalogue.The sealed bearings have no need to change grease within lifespan.The motors with pre-lubricated open bearings but without regreasing device should be re-lubricated at regular intervals. Motors with frame size 180-280 should be re-lubricated periodically with operation of 5000 hours.The motors with open bearings and regreasing device also should be re-lubricated at regular intervals. Motors with frame size 315, 2-pole should be re-lubricated periodically with operation of 3000 hours, and 4/6-pole should be re-lubricated periodically with operation of 5000 hours; the motors with frame size 355, 2-pole should be re-lubricated periodically with operation of 2000 hours operation, and 4/6-pole should be re-lubricated periodically with operation of 4000hours.The good lubrication of motors should be guaranteed in operation. Changing greasing should be done once the bearings are overheated or that grease goes bad.When changing grease, the old grease should be erased, and the gas groove of the bearing cover should be cleaned with gasoline. Then, filling the grease by ½ (for 2-pole) or ¾ (for 4/6-pole) gap between the inner and outer circle of the bearing with grease.10When the bearing’s lifespan nearly comes to the end,the vibration and noise of the motor increase greatly. Oncethe vertical space meets the figure below when checking,the bearing should be changed.(mm) 20-30 35-50 55-80 85-120 Bearingsemi-diaMaximum abrasion0.10 0.15 0.20 0.30space(mm)The size of changed bearing should agree with the old replaced bearing.NOTE: Maximum radial force (see Catalogue) must notbe exceeded！Irrespective of the number of operating hours, the rolling-contact bearing should be renewed every 3years because of grease ageing. In the case of motors operating under special conditions, such as a vertical motor position, heavy vibration, sudden load changes, frequent reversing operation, etc., the bearing should be changed at considerably more frequent intervals than the operating hours stated above.Type of grease for standard machines: UNIREX N3 (Esso); synthetic greases must conform to DIN 51825-K3N.Special greases should be indicated on the rating plateor on a separate plate.Dismantle the motor to the extent necessary. Pull offthe rolling-contact bearing with a suitable device (see Fig.1). Clean the journal！Heat the rolling-contact bearing evenly to about80-100℃ and press on. Heavy blows (such as with a hammer, ect.) should be avoided. Any worn sealing elements (such as the shaft sealing ring, etc.) should also11be renewed.If springless radial shaft sealing rings are used, the replacement sealing rings must also be of the springless type.Tightening torques for the screws at the end shields ( see table ).Regreasing deviceIn the case of motors with a regreasing device, please take note of the information given on the rating plate or the lubrication instruction plate！The bearings should be re-lubricated while the motor is running！12。