




产品标题:DSQC633A 3HAC031851-001 询价控制板电源数字量控制卡
型号:DSQC633A 3HAC031851-001
品牌:ABB
质保:七天验收期,质保期一年
发货期:1-3个工作日
产品图片展示
产品详情资料
电枢电源结论
由于节省成本,使用标准保险丝代替
一些应用中更昂贵的半导体熔断器。在正常和稳定的操作条件下,
这是可以理解的,只要
可以排除故障场景。
但是,如果发生故障,保存可能会导致
非常高的间接成本。功率半导体爆炸不仅会破坏功率转换器,
也会引起火灾。
足够的短路和接地保护
EN50178标准中规定的故障,只有使用适当的半导体保险丝才可能发生。
全体的
机组配置
保险丝或过电流跳闸等保护元件
在不能完全控制过电流时使用
出来在某些配置中,这将涉及以下问题:首先,在什么时候应该
是否包含保护元件?其次,在
发生什么故障时,相关元件会出现什么故障
提供保护以防损坏?
图2.6/1开关元件在
电枢电路转换器磁场电源结论
基本上,类似的条件适用于两种现场供应
和电枢电路供电。取决于功率
使用的转换器(二极管电桥、半控电桥、,
全控四象限电桥),部分故障
来源可能并不总是适用的。由于特殊原因
系统条件,例如通过自耦变压器或隔离变压器供电,新的保护条件可能额外适用。
以下配置相对频繁:
与电枢电路电源相反,保险丝是
从未在直流侧用于现场电源,因为
在某些情况下,保险丝跳闸可能导致
比保险丝跳闸的原因更大的损坏
首先(小,但长期过电流;
保险丝老化;接触问题;等)。
半导体保险丝F3.1(超快速作用)应为
如果条件与电枢电路类似,则使用
供应是适用的,例如保护
磁场电源装置和磁场绕组。
2 F3.1 ND30型/
内置
图2.6/2现场电源配置
F3.2和F3.3型保险丝用作线路保护器
不能保护现场电源装置。只有纯的
可以使用HRC保险丝或微型断路器。
例如,半导体保险丝会被破坏,
通过变压器的启动电流浪涌r
A.Conclusion for the armature supply
Due to cost saving standard fuses are used instead of the
more expensive semiconductor fuses at some applications. Under normal and stable operating conditions,
this is understandable and comprehensible, as long as
fault scenarios can be ruled out.
In the event of a fault , however, the saving may cause
very high consequential costs. Exploding power semiconductors may not only destroy the power converter,
but also cause fires.
Adequate protection against short-circuit and earth
fault, as laid down in the EN50178 standard, is possible only with appropriate semiconductor fuses.
General
Unit configuration
Protection elements such as fuses or overcurrent trips
are used whenever overcurrents cannot entirely be ruled
out. In some configurations, this will entail the following questions: firstly, at what point should which
protective element be incorporated? And secondly, in
the event of what faults will the element in question
provide protection against damage?
Fig. 2.6/1 Arrangement of the switch-off elements in the
armature-circuit converteConclusion for the field supply
Basically, similar conditions apply for both field supply
and armature-circuit supply. Depending on the power
converter used (diode bridge, half-controlled bridge,
fully controlled 4-quadrant bridge), some of the fault
sources may not always be applicable. Due to special
system conditions, such as supply via an autotransformer or an isolating transformer, new protection conditions may additionally apply.
The following configurations are relatively frequent:
In contrast to the armature-circuit supply, fuses are
never used on the DC side for the field supply, since a
fuse trip might under certain circumstances lead to
greater damage than would the cause tripping the fuse
in the first place (small, but long-lasting overcurrent;
fuse ageing; contact problems; etc.).
Semiconductor fuse F3.1 (super-fast acting) should be
used, if conditions similar to those for armature-circuit
supply are to apply, like for example protection of the
field supply unit and the field winding.
2 F3.1 ND30 /
built-in
Fig 2.6/2 Configuration for field supplies
The F3.2 and F3.3 fuse types serve as line protectors
and cannot protect the field supply unit. Only pure
HRC fuses or miniature circuit-breakers may be used.
Semiconductor fuses would be destroyed, for example,
by the transformer’s starting current inrush.r
A
主营产品简介
专注于DCS、PLC、机器人控制系统、大型伺服四大系统领域。
主营产品各种模块/卡件,控制器,触摸屏,伺服驱动器。
优势:供应进口原装正品,专业停产配件,
发货快,货期精准,
主营品牌包括 ABB贝利、GE/FUANC、FOXBORO、英维思TRICONEX 、本特利BENTLY、A-B罗克韦尔、艾默生EMERSON 、OVATION、MOTOROLA、XYVOM、霍尼韦尔HONEYWELL 、力士乐REXROTH、KUKA、NI、DEIF、横河、伍德沃德WOODWARD、瑞恩、施耐德SCHNEIDER 、安川、 穆格MOOG、PROSOFT等品牌
Copyright ©2019-2022 瑞昌明盛自动化设备有限公司 版权所有 赣ICP备2021006016号