工地现场维护服务工作-中英版
维护人员须配合工地现场条件完成所有的维护服务工作。使用的主要导体和槽绝缘必须不吸潮且符合BS 2757的B类材
料的规定。
如果任何本合同提供的电机安装在户外，电机必须不受气候影响。如有必要，采用获准的天棚设计，防止因阳光照射
导致的电机过热。
电机应能在每秒48至51转之间的额定输出频率及标准电压值10%的幅动范围内，连续不停地工作。在低于标准电压25%
时，电机的连续工作时间不少于5分钟，且没有危害性的过热现象产生。如果工程师要求，承包商必须证明电动机符合
该项要求。
每台电机必须配备可调节过热电流和短路保护装置对电机进行保护。
全压启动电流不超过满载电流的6倍。
马达承轴应为转动型，钢珠或者滚柱的外壳不可与转动部件发生接触。垂直轴电机允许使用推力轴承。
电机绕组的终端必须从接线盒引出，这样的安排比较容易改变任何二相式引导。
所有的终端都将装密封容器中，导管入口和转接板，如有要求，所采用的装置应与同类型的电缆搭配使用。
5.3. 启动装置和接触器
在本合同范围提供的启动装置，根据需要，每台电动机装有2 到3 根控制杆用具，除非另作说明，使用直流电启动。
接触器安装在通风的金属开关柜上。如在同一金属开关柜中包含两个或多个接触器，必须使用屏障将其隔开。开关柜
必须配备完善的锁定装置，电缆密封板及附件。所有二次回路都必须如是安排，并采取保护措施以至防止电弧损坏。
启动装置必须属于电力内置型，在外部门上装备有“启动”和“停止”按钮，同时装备有连锁切断开关。如有需要，在远
程仪表板的辅助开关上安装必须“红”和“绿”指示灯。所有连接与两相间的直流接触器线圈应能在400 V电压下正常工作
。
所有电动机接触器及相关仪器在正常的频率下，运行时间不少于5分钟时，都不应产生过热现象。
VI - 3- 101
大湄公河次地区(CMS)电站项目(老挝人民民主主义共和国)
Xeset-1至萨拉湾115千伏传输线路及变电站项目
水平开关、压力开关、温度开关、限位开关等开关的接触，采用突动动作类型，不允许采用滞缓作用类型和水银接点
类型。
控制装置将热力变量变换为联锁系统的二进制信号的程序必须独立操作进行，例如：不允许控制装置用于常规连锁和
其它的目的。
配电板，断路器和保险丝
400 V 配电板
400 V 成套开关设备采用配电板方式，符合IEC 60439规定。 配电板对“变电站维护”的供应采用单个汇流排，采用空气
断路器的多个配电装置间隔或者多箱工厂组装型式，连接空气断路器，手工操作的微型断路器装置和隔离开关装置，
在变电站房屋内，安装400 V，三相，4 线路，50Hz赫兹系统，[配备有不带电的牢固地接。
1) 额定功率
全部配电板接入供应必须对电路断路器进行保护。
全部配电板必须适合电路断路器预期的额定功率容量，在415 V时不少于40 kA。
2) 温度的升高
配电板能承受连续电流，而不超过在IEC 标准里给定的最高温度。
3) 汇流排
配电板包括三相汇流排和一个铜高导材料不带电的汇流排，承受全部正常和错误状态的应激。
不带电汇流排的额定功率不低于相关相性的汇流排。主要线路设备3相汇流排的额定功率不低于400 A，3相馈线电路设
备的额定功率不低于100 A。
4) 施工
每个配电板在水平方向安装有钢结构汇流排箱，安装高度必须方便开关操作。配电板的类型，必须在热带气候区容易
扩展并且方便使用。每条电路清楚贴上标签显示这条线路的目的地， 清楚标明“开”和“关”的位置。
Job Description for Site Maintenance Services
Maintenance personnel shall complete all the maintenance service work cooperated with site conditions. It is required to use the main slot insulation and conductors shall not moisture absorption in accordance with BS 2757 class B material
Provisions of the material
If any motor listed in the contract are installed in the outdoors, motor shall not be affected by climate. If necessary, use the approved ceiling design, prevent due to sun exposure
Caused by motor overheating
Motor should be able to between 48 and 51 RPM standard rated output frequency and voltage value of 10% of the dynamic range of continuous work. In less than 25% standard voltage
Motor of the continuous working time shall not less than five minutes and no harm to overheating. If required by the engineer, the contractor shall prove that the motor observed such requirement.
Each motor shall be equipped with adjustable current and short circuit protection device of motor overheating protection.
Total pressure starting current is not more than 6 times the full load current.
Motor bearings shall be the rotation type, ball or roller shell do not contact with moving parts. Allow use of the vertical axis motor thrust bearing.
Motor winding terminal shall be from the junction box, this arrangement is easier to change any two-phase type guide.
All terminals will be packed in the sealed container, duct inlet and adapter plate, if you have any requirement, adopted by the device should match with the same type of cable used.
5.3. Start device
In initiating device provides the scope of this contract, according to the need, each motor is equipped with 2 to 3 root control lever appliance, unless otherwise specified, using a direct current.
Contactor installed in the ventilation metal switchgear. As in the same metal switchgear consists of two or more of the contactor, shall use the barrier to be separated. Switch cabinet
It is required to equip with locking devices, cable seal plate and accessories. All secondary loop shall be arranged, and take protective measures to prevent damage of electric arc.
Starter shall belong to the power of built-in type, outside the department is equipped with "start" and "stop" button, at the same time equipped with chain cut off switch. If necessary, in a distant city
Cheng auxiliary switch on the dashboard installation shall be "red" and "green light". All connections and two phases of dc contactor coil should be able to work under 400 V voltage.
All motor contactor and related instruments under the normal frequency, the running time of not less than five minutes, should not cause overheating phenomenon.
VI - 3-101.
The greater Mekong sub-regional (CMS) power station project (Lao people's democratic republic)
Xeset - 1 to Sarah bay 115 kv transmission line and substation projects
Level switch, pressure switch, temperature switch, limit switch, such as switch contacts, with snap action types, are not allowed to use lagging effect of type and mercury contact
Control device to thermodynamic variable transformation for binary signal interlocking system program shall be independent operation, such as: control device used in conventional chain and is not permitted
Other purpose
Distribution board, circuit breaker and fuse
400 V power distribution board
Use 400 V switchgear panel, conform to the requirement of IEC 60439. Distribution slabs of substation maintenance supply using a single bus or by air;
Multiple interval distribution equipment or circuit breaker box factory assembly type, connect the air circuit breaker, manual operation device of miniature circuit breaker and isolating switch,
Within the substation building, installation of 400 V, three-phase, 4 line, 50 hz hz system, [equipped with uncharged firmly answered.
1) Rated power
Access all switchboards supply shall be carried out on the circuit breaker protection.
All board shall be suitable for circuit breaker expected rated power capacity, no less than 40 kA when 415 V.
2) Rise of temperature
Distribution board shall withstand continuous current and no more than the highest temperature given in IEC standard;
3) Bus
Distribution board including three-phase bus bar and a high conductivity copper materials don't charged the bus-bar, withstand all normal and error state of stress.
Electrically neutral busbar is not lower than the rated power of the relevant phase bus bar. Main line equipment of three phase bus bar power rating not less than 400 A, 3 phase feeder circuit for the power rating of not less than 100 A.
4) Construction
Each switchboard bus box installed in horizontal direction with steel structure, convenient installation height shall switch operation. Distribution board type, shall be in tropical climates extension and convenient use. Label each circuit clearly shows the destination of this line, clearly indicate the "on" and "off" position.
2014.5.1