YASKAWA ETC615992-S1113伺服驱动电机现货

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YASKAWA ETC615992-S1113伺服驱动电机现货

转换器在其交流输入端造成短时短路，因此
-称为换向凹口。这种凹口低至0 V（100%）深度）可在变流器的次级绕组处接受
（专用）变压器（无线路扼流圈运行）。然而
如果使用相同的变压器供电，则必须减少其深度两个以上功率相当的转换器。在这种情况下，行扼流圈是必要的。它们必须引起大约1%的相对电压
在额定电流下下降。如果出现以下情况，也需要使用所谓的1%扼流圈：与可用的相比，转换器的功率非常低
变压器或电源线的功率。ABB提供合适的1%窒息。
根据欧洲产品标准EN 61800-3
换向槽口必须保持低于线路电压的20%
在一种环境中，规定了40%的上限
对于第二环境。这个目标可以通过线路阻塞的辅助。应用于这些扼流圈的电感
一个环境的值必须是网络的4倍
转换器连接点（公共点）处的电感耦合，PCC），如图5.2-3所示。因此，在许多情况下
所谓的4%扼流圈是必要的，因此ABB也提供除了1%的扼流圈外，还需要合适的4%线路扼流器。通常，大电流不受变压器限制，而是受连接工业区的电力电缆。因此，有必要询问
关于线路阻抗和电流的能源供应公司
其在期望的公共耦合点（PCC）处可用。分离变压器不需要线路扼流圈，因为：其漏感和接地屏之间
绕组节省了EMC滤波器，参见1和4。屏幕和熨斗铁芯必须与变流器的安装板连接良好。如果变压器位于变流器柜外屏蔽三相电缆的屏幕（环境，图5.2-1右侧）或接地电缆（“第二”环境，图左边的5.2-1）必须进行连接（另见24“连接示例”）。
6台变流器（专用）变压器
转换器（专用）变压器直接传输高功率
从中压线路到单个大型转换器或本地多个转换器的低压线路（见20）。此外，它还采取行动作为根据5所述的分离变压器。
如果这种转换器变压器没有屏幕，则EMC要求：然而，在大多数情况下，由于RF干扰能量很难通过中压线路获得公共线路至必须保护的负载的变压器反对干扰。如有争议，计量必须：在公共耦合点（公共低压线）进行根据EN 61 800-3，可使用市场上可用的所有金属机柜；然而根据9，其安装板必须具有良好的导电表面。
如果驱动系统放置在多个机柜中，其安装：板必须用宽大的导电板连接金属
9.安装板：安装板必须由钢制成，表面镀锌没有任何绘画。PE铜棒必须直接安装在安装板上，并且必须通过分布的多个螺栓与板连接沿其长度以相等的距离。
10.安置
装置转换器、线路扼流圈、保险丝、接触器和EMC滤波器
放置在安装板上，以便连接可以尽可能短，尤其是来自转换器的通过线路扼流圈至过滤器，并满足15中的要求满足。待安装的部件表面安装板必须无涂层材料（见28）。Converters cause short-duration short circuits at their AC inputs, so
- called commutation notches. Such notches down to 0 V (100%
depth) can be accepted at the secondary windings of converter
(dedicated) transformers (operation without line chokes). However,
their depth must be reduced if the same transformer shall supply
more than two converters of comparable power. In such case line
chokes are necessary. They must cause about 1% relative voltage
drop at rated current. So - called 1% chokes are also necessary if
the power of the converter is very low compared with the available
power of the transformer or supply line. ABB offers suitable 1%
chokes.
According to the European product standard EN 61800-3, the
commutation notches must be kept below 20% of the line voltage
in the first environment, whereas an upper limit of 40 % is specified
for the second environment. This target can be achieved with the
aid of line chokes. The inductance of these chokes to be applied in
the first environment must have 4 times the value of the network
inductance at the converter’s connection point (point of common
coupling, PCC) as shown in Figure 5.2-3. Therefore in many cases
so-called 4% chokes are necessary, and therefore ABB offers also
suitable 4% line chokes besides the 1% chokes.Often the maximum current is not limited by the transformer but by the
power cable to the industry region. Therefore it is necessary to ask the
energy supply company concerning the line impedance and the current
which is available at the desired point of common coupling (PCC).A separation transformer makes line chokes unnecessary because
of its leakage inductance, and a grounded screen between its
windings saves an EMC filter, see 1 and 4. The screen and the iron
core must be well connected with the mounting plate of the converter. If the transformer is located outside the converter cubicle
the screen of a screened 3-phase cable ("first" environment, figure
5.2-1 at the right) or a ground cable ("second" environment, figure
5.2-1 at the left) must make this connection (see also 24 "Connection example").
6 Converter (dedicated) transformers
A converter (dedicated) transformer transfers high power directly
from a medium voltage line to a single large converter or to a local
low voltage line for several converters (see 20). Furthermore it acts
as separation transformer according to 5.
If such a converter transformer has no screen the EMC demands
are nevertheless fulfilled in most cases because the RF interference energy can hardly get via the medium-voltage line and the
transformer of the public line to the loads which must be protected
against pertubances. In the case of a dispute a measurement must
be done at the point of common coupling (public low - voltage line)
according to EN 61 800-3.All metal cubicles available on the market can be used; however,
their mounting plates must have well conducting surfaces according to 9.
If a drive system is placed in more than one cubicle their mounting
plates must be connected by broad pieces of well conducting sheet
metal.
9 Mounting plate The mounting plate must be made from steel with zinc surfaces
and without any painting. The PE copper bar must be mounted directly on the mounting plate without any insulating means between,
and it must be connected with the plate by several bolts distributed
in equal distances along its length.
10 Placement of
devices
The converter, the line choke, fuses, contactors and the EMC filter
are to be placed on the mounting plate so that the connections can
be made as short as possible, especially those from the converter
via the line choke to the filter, and that the requirements in 15 can
be fulfilled. The surface of the components to be mounted on the
mounting plate has to be free of coating material (see 28).

RELIANCE

ABB

GE

FOXBORO

EMERSON艾默生

A-B

MOTOROLA

TRICONEX

HONEYWELL霍尼韦尔

HIMA

140系列PLC

BENTLY本特利

其他

SST

EPRO

YOKOGAWA

MOOG

NI

WOODWARD伍德沃德

METSO

KOLLMORGEN科尔摩根

力士乐

ALSTOM阿尔斯通

YASKAWA安川

AMAT

ICS TRIPLEX

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YASKAWA ETC615992-S1113伺服驱动电机现货

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