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低压电机中英文对照说明书


低压三相异步电动机 使用维护说明书
Instruction Book For 3 Phase Low Voltage Induction Motor

OEHB.460.002 低压电机使用维护说明书

OEHB.460.002 使用说明书 Machine Instructions
开始使用
Putting

into service (starting)
收货检查
Reception check
收到电机后立即检查是否有损坏,如发现请立即拨打电话:0086-21-6463-1777,或发传真至 0086-21-6463-7180,检查铭牌数据特别是额定电压、接线方式(星形或三角形)是否与合同订货要 求相符,用手转动电机轴检查轴转动是否灵活。 Immediately upon receipt check the machine for external damage and if found, inform our factory through telephone or fax number without delay (tel:0086-21-6463-1777, fax:0086-21-6463-7180). Check all rating plate data, especially voltage and winding connection (star or delta). Turn shaft by hand to check free rotation.

绝缘电阻检查
Insulation resistance check
在电机调试前或怀疑线圈受潮时要测量电机的绝缘电阻,在25℃时的电阻值应超过以下表达式的值,表 达式中: Measure insulation resistance before commissioning and when winding dampness is suspected. Resistance, measured at 25°C, shall exceed the reference value, i.e. where: R:单位欧姆(用500V绝缘电阻表测量) U表示电压,单位V P表示功率,单位kW R: ohms (measured with 500 V dc Megger) U = voltage, Volts; P = output power, kW. 警告: 测量完绝缘电阻后应立即将测量线从电机上断开, 以免线圈再次受到高电压冲击。 环境温度每升高20℃, 绝缘电阻将降低一半,如果绝缘电阻值达不到计算值,表明线圈已经受潮需进行烘干处理。先在90℃温 度下烘12-16小时再在105℃下烘6-8小时。 WARNING Windings should be discharged immediately after measurement to avoid risk for
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R=

U 1000+ P 100

OEHB.460.002 低压电机使用维护说明书

electric shock. Insulation resistance reference value is halved for each 20°C rise in ambient temperature. If the reference resistance value is not attained, the winding is too damp and must be oven dried. Oven temperature should be 90°C for 12-16 hours followed by 105°C for 6-8 hours.

电机启动
Motor starting

① 单速电机启动(直接或Y/?启动)
标准单速三相异步电动机的出线盒内有6个接线头和至少1个接地接头,接地须根据操作规程在电机接上 电源前进行,接线方式和电压应根据铭牌指示。

Direct-on-line or star/delta starting
The terminal box on standard single speed machines normally contains 6 winding terminals and at least one earth terminal. Earthing shall be carried out according to local regulations before the machine is connected to the supply voltage. The voltage and connection are stamped on the nameplate.

出线与旋转方向
电机的旋转方向:当相序为L1、L2、L3时,在电机拖动端面对轴伸视为顺时针旋转。如要改变转向,只 需改变任意两根电源电缆的相序,如果单向旋转的电机,需检查电机转向是否与指示拍上的方向一致。 (接线应严格按照接线盒中示意图)

Terminals and direction of rotation
Direction of rotation is clockwise when viewing the shaft face at the machine drive end, when the line phase sequence L1, L2, L3 is connected to the terminals as shown in the figure. To alter the direction of rotation, interchange the connection of any two-line cables. If the machine has a unidirectional fan check that the direction of rotation is according to the arrow marked on the machine. (The terminals shall be connected in strict accordance with the terminal box

drawing.) ②多速电机启动
多速电机一般应低速档启动后切换到高速,对多套绕组的变速电机在不同转速档切换时,应在一绕组失 电后才能向另一绕组送电。 Start-up of variable speed motor

The variable speed motor starts at low-speed status and then shifted to high-speed. For varible speed motor with many sets of windings, the speed shift shall be fulfilled when one winding has lost power.

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OEHB.460.002 低压电机使用维护说明书

示意图1:

示意图2:单绕组双速(△/YY) Single-winding multi-speed

示意图3:单绕组双速(Y/YY) Single-winding multi-speed

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OEHB.460.002 低压电机使用维护说明书

示意图4:双绕组双速(Y/Y) Double-winding multi-speed

③变频电机启动
变频电机启动时,变频风机也必须同时启动。变频电机电源必须是不变频电源,转向必须按风机外壳上 的指示牌。调节v/f比例,电机得到多种启动方式,但如果过电压将引起过载。

4

OEHB.460.002 低压电机使用维护说明书

Start-up of variable frequency motor When the variable frequency motor starts, the variable frequency blower shall starts simultaneously. The power supply of variable frequency motor shall be of invarialbe frequency, and the rotating direction shall be as specified in the nameplate of blower.

使用
运行条件
电机是用来驱动其他机械,通常环境温度为-25°C 到 +40°C,海拔高度为1000米以下。

Use
Operating conditions
The machines are intended for use in industrial drive applications. Normal ambient temperature limits -25°C to +40°C. Maximum altitude 1000 m above sea level.

处理
储存
所有电机应储存于干燥,通风以及干净的室内, 裸露的表面如轴伸和法兰面应涂以防锈脂。 建议定期用手 转动电机轴,以免润滑脂流掉,带有加热器的应接通加热器。

Handling
Storage
All machine storage should be done indoors, in dry, well ventilation and dust free conditions. Unprotected machined surfaces (shaft-ends and flanges) should be given anti-corrosion coatings. It is recommended that shafts be rotated periodically by hand to prevent grease migration. Anti condensation heaters, if fitted, should preferably be energized.

安装
基础
买方要准备好电机的基础,金属结构的基础应涂以防锈漆防止被腐蚀。电机基础应平整,并有足够的刚 度承受突然短路产生的应力,要计算其尺寸以避免因共振引起基础振动。

Installation
Foundation
The purchaser bears full responsibility for preparation of the foundation. Metal foundations should be painted to avoid corrosion. Foundations shall be even, and sufficiently rigid to withstand possible short circuit forces. They shall be dimensioned as to avoid the occurrence of vibration due to resonance.

5

OEHB.460.002 低压电机使用维护说明书

校正中心
校正电机安装中心有利于避免轴承发生故障、振动和可能发生的轴伸断裂事故。

Alignment
Correct alignment is essential to avoid bearing failures, vibrations and possible fractured shaft extensions.

接线
通常出线盒在电机的右侧(在电机拖动端面对轴伸视),还有其他位置可供样本选择。除了绕组和接地, 出线盒还可以接停机加热器、双金属温度开关或PT100测温元件等。

Connection
The normal machine design is with terminal box on the right, when viewing the shaft face at the machine drive end. Availability of these solutions is described in the product catalogues. Besides the main winding and earthing terminals the terminal box can also contain connections for standstill heating elements, bimetallic switches, or PT 100 resistance elements.

装配与拆卸
概述
装配与拆卸工作必须有资格的专业人员使用专用工具和合适的工作方法来进行。

Assembly and dismantling
General
Dismantling and assembly of machines must be carried out by qualified personnel using only suitable tools and working methods.

轴承
拆卸轴承时必须特别注意,应该使用轴承拉脚并加热或使用专用工具。

Bearings
Special care shall be taken with the bearings. Bearings shall be removed using pullers and fitted by heating or the use of specialized tools for the purpose.

平衡
电机出厂前已经进行了转子动平衡

Balancing
The rotor of the machine is dynamically balanced.

6

OEHB.460.002 低压电机使用维护说明书

维护与更换润滑油
一般检查
- 在计划停机时检查 - 保持电机清洁,确保良好通风 - 检查轴承密封状态,如有必要即进行更换。 - 检查各连接、地脚及装配螺栓。 - 通过听声音、测量振动、轴承温度以及检查润滑油是否过期来检测轴承的状态。

Maintenance and lubrication
General inspection
- Inspect the machine at regular intervals. - Keep the machine clean and ensure free ventilation air-flow. - Check the condition of shaft seals and replace if necessary. - Check the condition of connections and mounting and assembly bolts. - Check the bearing condition by listening for unusual noise, vibration measurement, bearing temperature, inspection of spent grease.

更换润滑油
装有密封轴承的电机
中心高在160mm以下的电机装有密封轴承,装有密封轴承的电机在运行期间不必加油。

Lubrication
Machines with sealed bearings Machines up to frame size 160 are normally fitted with sealed bearings. It needn’t regrease during operation

带加油口的电机 中心高180~355的电机轴承通常配有加油口,可以在电机运行时加润滑脂。 Machines fitted with grease nipples Machines frame from 180 to 355 is normally fitted with grease nipples. Lubricate the machine while running.

更换润滑脂时间间隔如下: Guidelines for re-greasing intervals are

7

OEHB.460.002 低压电机使用维护说明书

电机中心高 mm 180 200,225 250,280 315 355

补充润滑脂量 (克) 20 25 35 50 60 3000 3500 3100 2000 2000 1000

电机转速r/min 1500 5500 5000 5000 3000 2000 1000 6500 6000 6000 3500 3000 500-900 8500 7000 7000 4500 4000

轴承补充润滑脂时间间隔

Speed r/min Amount of grease 3000 1500 1000 (g) Bearings’ Lubrication intervals in duty hours 180 20 3500 5500 6500 200,225 25 3100 5000 6000 250,280 35 2000 5000 6000 Frame size mm 315 355 50 60 2000 1000 3000 2000 3500 3000

500-900

8500 7000 7000 4500 4000

表格中的数据适合于卧式安装的电机,对于立式安装的电机,其时间间隔为相应表格中的一半,如果按 照上述时间间隔加油,加油量可以参照表格内的数据。如果电机装有放油孔,更换润滑油时要等到原来 的油全部被挤出后才算完成。 对于使用于较高环境温度及轴承温度达80℃以上, 则应相应缩短加油时间。 The table is prepared for horizontally mounted machines. Lubrication intervals for vertical machines are half of the above values. The grease amount in the table is used if small quantities of fresh grease are replaced at regular intervals as above. As an alternative, when the machine is fitted with grease escape valves, fresh grease may be pressed into the bearings until the old grease is totally replaced. The motor, which is running under high ambient temperature or the bearing temperature is more than 80°C, should shorten the re-greasing intervals correspondingly.

此说明书适合于上海上电电机有限公司生产的低压三相异步电动机 This instruction is for the LV machines made by Shanghai Shangdian Elec.Machinery CO.,LTd

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