英语翻译9.5 Festoon systems:current and data supply totrolleysTh

英语翻译
9.5 Festoon systems:current and data supply to
trolleys
The current and data supply between the fixed part of the crane and
the travelling trolley is normally carried out by a festoon system.In a
crane with a machinery trolley,the festoon system incorporates a largenumber of rather heavy current supply cables.Cranes with full rope
trolleys,may even have as few as 2 or 3 thin cables.The number of
these cables has been sharply reduced over the years,by the use of
fibreoptic connections,which are now frequently used.The cables in
the festoon system are mounted on cable carriers and can be tubular or
flat cables.In the fast moving machinery trolleys,the use of 2 or 3
motor-driven festoon carriers is necessary to move the big bundles or
heavy festoon cable more smoothly.Alternatively,current supply rails
can be used.When these are of the normal copperhead type,double
current collectors are required.
The wear of such systems can be considerable when high amperages
have to be transferred and crane or trolleys are moving at high speed.
The data supply could then be carried out via a guided microwave data
communication system.
Unipole insulated conductor rails can also be used for transporting
the main current to a crane or a machinery trolley.These conductor
rails can have a copper cross-sectional area of 500 mm2 and may have
a continuous Ampe`re capacity of approximately 1000 Amps.The
required capacity should be carefully calculated,as well as the voltage
drop over the distance from the point where the system is fed to the
end of the crane or trolley travelling length.

Festoon system（拖令系统）没一个翻对的,就是起重机花饰状的电缆系统.以下翻译请楼主审阅
9.5 Festoon systems:current and data supply to trolleys
9.5 拖令系统：向台车的电流和数据供给
The current and data supply between the fixed part of the crane and
the travelling trolley is normally carried out by a festoon system.In a
crane with a machinery trolley,the festoon system incorporates a largenumber of rather heavy current supply cables.
起重机固定部分与行进的台车之间的电流和数据的供给通常是由拖令系统进行的.在一台采用机械台车的起重机中,拖令系统结合进大量的相当重的供电电缆.
Cranes with full rope trolleys,may even have as few as 2 or 3 thin cables.The number of
these cables has been sharply reduced over the years,by the use of
fibreoptic connections,which are now frequently used.The cables in
the festoon system are mounted on cable carriers and can be tubular or
flat cables.In the fast moving machinery trolleys,the use of 2 or 3
motor-driven festoon carriers is necessary to move the big bundles or
heavy festoon cable more smoothly.Alternatively,current supply rails
can be used.When these are of the normal copperhead type,double
current collectors are required.
带有牵索台车的起重机可能甚至只有少达2或3根细电缆.这些电缆的数目由于采用了光纤连接,这些年来已经被急剧减少,而光纤现在则用得很频繁.拖令系统中的电缆被安装在电缆载体上,电缆可以是圆形的,也可以是扁平的电缆.在快速运行的机械台车中采用2或3个电机驱动的拖令载体对于使大的电缆束或沉重的拖令电缆更加平稳的移动来说是必要的.或者,也可采用供电轨.当供电轨具有通常的铜头（copperhead）型时,需要用两个集流器.
The wear of such systems can be considerable when high amperages
have to be transferred and crane or trolleys are moving at high speed.
The data supply could then be carried out via a guided microwave data
communication system.
这种系统的磨损在必需传送大安培数电流,以及起重机或台车以高速运动时可加以考虑.然后数据的供给可以通过导引微波数据通信系统来进行.
Unipole insulated conductor rails can also be used for transporting
the main current to a crane or a machinery trolley.These conductor
rails can have a copper cross-sectional area of 500 mm2 and may have
a continuous Ampe`re capacity of approximately 1000 Amps.The
required capacity should be carefully calculated,as well as the voltage
drop over the distance from the point where the system is fed to the
end of the crane or trolley travelling length.
单极绝缘导线轨也可用于向起重机或机械台车传送主电流.这些导线轨可以有500mm2的铜横截面积,以及可以有大约1000安培的连续电流容量.所需的容量应该仔细计算,还有经过从系统馈送到起重机或台车运行长度的终点那段距离后的电压降也要仔细计算.