翻译

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9.4Cable reels
9.4 电缆盘
The current supply to a crane is normally delivered by a motor-driven
supply reel on which a tubular MV cable or sometimes a flat MV cable
is wound. The tension can vary from 3,3 kV to 23 kV; fibreoptic cores
can be included in the current supply cable. These fibreoptic cores need
a special fibreoptic rotary accumulator which is vulnerable to damage.
向起重机的电流供给通常由电机驱动的电缆收放盘，在电缆收放盘上，卷绕着管状的中压电缆，或有时是扁平的中压电缆。 电缆的电压等级可以从3.3 kV变到23kV；在供电电缆中可以包括进光纤芯线。这些光纤芯线需要用特殊的光纤旋转积聚器，该积聚器很容易受到损坏。
The cable reels can be:
– parallel type or drum type;
– monospiral radial type;
– random lay radial type;
– the pull and store type.
电缆盘的类型可以是：
－平行型或鼓型；
－单螺旋的径向型；
－随机排放的径向型；
－收储型。
Heat dissipation has to be controlled and this will normally give a derating
factor which must be applied to the current capacity of the cable.
散热必需加以控制，而这通常会给出一个降额因子（额定值降低因子），必需在电缆的电流容量中考虑进去。
Manufacturers use all types of drive. A difficult issue can be the turnover
point, if a fast running crane, with a cable reel with a big inertia
moment has to run at full speed over the turn-over point. At this turnover
point, the fully loaded cable reel, running at full speed in one
direction, has to go immediately in the opposite direction. A special
system is the pull and store system in which the cable tension is limited
by the fact that the pull reel lifts up the cable on a constant reeling
radius. Using this configuration, it is possible to limit the maximum
tension of the cable within the allowed limits without the need for a
sophisticated torque control.
商使用各种类型的驱动。一个难题可能就是在转折点，如果一台其电缆盘有着很大的惯性的，快速运行的起重机，必需通过转折点全速运行。那么在此转折点，满载的电缆盘在以一个方向全速运行时，就不得不立即以相反方向前进。一种特殊的系统就是（电缆）收储系统，其中，电缆的张力受到一定的，那是因为收缆盘是在恒定的收缆半径上提起电缆的。利用这样的结构，就可以将电缆的张力在允许的限度内而不需要复杂的转矩控制。

因工作较忙，若你能等到下午，我下班前给你译文（大约下午4：30左右）。

9.4Cable reels
The current supply to a crane is normally delivered by a motor-driven supply reel on which a tubular MV cable or sometimes a flat MV cable is wound. The tension can vary from 3,3 kV to 23 kV; fibreoptic cores can be included in the current supply cable. These fibreoptic cores need a special fibreoptic rotary accumulator which is vulnerable to damage
9.4 电缆盘
供给吊车电源通常经由电动机驱动的动力电缆盘，盘上盘有圆形或扁圆形电缆。电缆的电压为3.3千伏至23千伏，该电缆中心穿有一根光缆，此光缆配有一根特种光纤旋转储能器，极易受到损坏。
The cable reels can be:
– parallel type or drum type;
– monospiral radial type;
– random lay radial type;
– the pull and store type.
电缆盘可以在以下形式下排放：
-并排式或者鼓式
-单螺旋辐射式
-随意排放辐射式
-抗拉缓存式
Heat dissipation has to be controlled and this will normally give a derating factor which must be applied to the current capacity of the cable.
热散发必须加以控制，一般情况下这会导致降级因素，这必然会影响到电缆的导电功能。
Manufacturers use all types of drive. A difficult issue can be the turnover point, if a fast running crane, with a cable reel with a big inertia moment has to run at full speed over the turn-over point.
生产厂使用了多种驱动方式。困难之处是在吊车的一周转折点，如果吊车旋转过快，电缆盘的惯性会在全速下旋转绕过一周的转折点。
At this turnover point, the fully loaded cable reel, running at full speed in one direction, has to go immediately in the opposite direction. A special system is the pull and store system in which the cable tension is limited by the fact that the pull reel lifts up the cable on a constant reeling radius.
在此转折点，满负荷的电缆盘由一个方向全速运转，瞬间要以相反的方向运动。我们设计了一个系统，即：抗拉缓冲系统。它可以将电缆的拉力在拉盘以恒定的盘曲率半径提起电缆。
Using this configuration, it is possible to limit the maximum tension of the cable within the allowed limits without the need for a sophisticated torque control.
使用该结构，可以不用精密的扭矩控制，在其许用范围内达到电缆最大拉力目的。

9.4Cable reels
The current supply to a crane is normally delivered by a motor-driven
supply reel on which a tubular MV cable or sometimes a flat MV cable
is wound. The tension can vary from 3,3 kV to 23 kV; fibreoptic cores
can be included in the current supply cable. These fibreoptic cores need a special fibreoptic rotary accumulator which is vulnerable to damage
9.4线缆卷筒
起重机的供电通常都是由管状MV线缆或者一个弯曲了的平直线缆组成的电动卷筒的。电压范围从3.3千伏至23千伏。供电线缆中包含光纤核。这些光纤核需要一个非常重要但又极易损坏的光纤旋转累加器。
The cable reels can be:
– parallel type or drum type;
– monospiral radial type;
– random lay radial type;
– the pull and store type.
线缆卷筒应该符合以下条件：
-并联式或者鼓式
-叠加缠绕辐射式
-随机缠绕辐射式
-拉力缓冲式
Heat dissipation has to be controlled and this will normally give a derating factor which must be applied to the current capacity of the cable.
Manufacturers use all types of drive. A difficult issue can be the turnover point, if a fast running crane, with a cable reel with a big inertia moment has to run at full speed over the turn-over point.
热散逸已经被控制住了，这也就自然的为电缆载流量了减额因素。生产商应用所有的驱动形式。一个比较困难的问题就是在翻折点处，一台带有电缆卷筒的高速运行的起重机，在一个较大的惯性力矩的作用下必须要以全速通过翻折点。
At this turnover
point, the fully loaded cable reel, running at full speed in one
direction, has to go immediately in the opposite direction. A special
system is the pull and store system in which the cable tension is limited by the fact that the pull reel lifts up the cable on a constant reeling radius.
在此翻折点，满负荷的电缆滚筒朝着一个方向全速运转，突然间要朝着相反的方向运动。而拉力缓冲系统就是这样的一个能够将线缆的拉力均匀分布在卷筒上的系统。

Using this configuration, it is possible to limit the maximum
tension of the cable within the allowed limits without the need for a
sophisticated torque control.
使用这种结构，就可以不用通过精细的扭矩控制而实现线缆最大拉力控制的目的

9.4Cable辘
目前起重机交付通常由电动机驱动的盘管式上压线或有时一个单位压电缆的伤口。紧张局势可能从3,3千伏至23千伏; fibreoptic核心可在目前的供电电缆中。这些fibreoptic核心需要特别fibreoptic旋转蓄热器非常容易受到损害。电缆卷筒可以是：
-平行式或滚筒式;
- monospiral径向型;
-随机奠定径向型;
-拉力和存储类型。散热要受到控制，这通常会给予降额的因素，必须用于电缆的电流容量。商使用所有类型的驱动器。一个棘手的问题可以是营业额来看，如果一个快速运行的起重机与大转动惯量电缆卷筒，必须全速运行在交出点。在这个营业点，满载电缆盘，运行在一个方向全速，要到相反的方向立即。一个特殊的系统是拉和存储系统，其中电缆紧张的是，拉了一个不断缫丝电梯电缆卷筒半径有限。使用这种配置，就可以在电缆内无需复杂的转矩控制在允许的范围需要最大张力。

9.4Cable reels
The current supply to a crane is normally delivered by a motor-driven
supply reel on which a tubular MV cable or sometimes a flat MV cable
is wound. The tension can vary from 3,3 kV to 23 kV; fibreoptic cores
can be included in the current supply cable. These fibreoptic cores need a special fibreoptic rotary accumulator which is vulnerable to damage.

9.4电缆滚筒
起重机电源的通常是管式毫伏电缆或者卷起的平式毫伏线缆组成的电动卷筒。电压范围从3.3千伏至23千伏不等。供电线缆中有光纤核心。这些光纤核心需要一个特殊的极易损坏的旋转蓄电器，

The cable reels can be:
– parallel type or drum type;
– monospiral radial type;
– random lay radial type;
– the pull and store type.

电缆滚筒可能会是以下的类型：
-并联式或者鼓式
-联合缠绕辐射式
-随机缠绕辐射式
-拉伸自动固定式

Heat dissipation has to be controlled and this will normally give a derating factor which must be applied to the current capacity of the cable.Manufacturers use all types of drive. A difficult issue can be the turnover point, if a fast running crane, with a cable reel with a big inertia moment has to run at full speed over the turn-over point.At this turnover point, the fully loaded cable reel, running at full speed in one direction, has to go immediately in the opposite direction. A special system is the pull and store system in which the cable tension is limited by the fact that the pull reel lifts up the cable on a constant reeling radius.Using this configuration, it is possible to limit the maximum tension of the cable within the allowed limits without the need for a sophisticated torque control.

热散逸必须予以控制，这将导致电缆载流量的减少。生产厂商可能采用所有驱动形式。反折点可能是一个技术难题，即一台带有电缆滚筒的高速运行的起重机，必须在一个较大的惯性力矩的作用下以全速通过反折点。在这个反折点，满负荷的电缆滚筒朝着一个方向全速运转，这时立刻要朝着相反的方向运动。而拉力缓冲系统就是这样的一个能够将线缆的拉力均匀分布在卷筒上的系统。使用这种结构，就可以不用通过精细的扭矩控制而实现线缆最大受力的目的。

9.4Cable卷筒
目前起重机交付通常由电动机驱动
盘管式上压线或有时一个单位压电缆
是伤口。紧张局势可能从3,3千伏至23千伏; fibreoptic核心
可以包含在当前的供电电缆。这些fibreoptic核心需要
特别fibreoptic旋转蓄热器非常容易受到损害。
该电缆卷筒可以是：
-平行式或滚筒式;
- monospiral径向型;
-随机奠定径向型;
-拉和存储类型。
散热必须得到控制，这通常会给予降额
因素，必须适用于电缆的电流容量。
商使用所有类型的驱动器。一个棘手的问题可以是营业额
指出，如果一个快速运行的起重机，与一辆大惯性电缆卷筒
时机已到全速运行在交出点。在这个营业额
点，满载电缆卷筒，全速运行在一个
方向，必须走相反的方向立即。特别
系统是拉和存储系统，其中电缆张力是有限的
的是，拉了一个缫丝不断电缆卷筒升降机
半径。使用这种配置，就可以最大
电缆的张力内而不需要允许的限度
先进的转矩控制。