西门子3RW4 075-6BB44

3RW 软起动器应始终根据所需的电机额定工作电流进行设计。选型和订货数据中列出的电机额定值为大致指导值，适用于基本起动条件 (CLASS 10)。
对于其它起动条件，建议使用软起动器模拟工具 (STS)。
电机额定数据（单位：kW 和 hp）基于 IEC 60947?4?1。
在大于 2 000 m 的海拔高度上，允许的工作电压降低至 480 V。
SIRIUS 3RW 软起动器的安装海拔高度
选型和订货数据是针对以下限制确定的（独立安装，无附加风扇）
高性能型软起动器
一般性能型软起动器
基本性能型软起动器
SIRIUS 软起动器
3RW55
3RW52
3RW40
3RW30
限制
长起动时间
s
20
10
3
起动电流（% 电机电流）
Ie
300
每小时起动次数
1/h
5
20
软起动器仿真工具 (STS)
软起动器模拟工具 (STS) 提供了一种使用简单、快速和易用的界面设计软起动器的便利方法。输入电机和负载数据后可对应用进行仿真，并提出适当软起动器的建议。
用于免费下载软起动器模拟工具 (STS)
?简单，快速和用户友好的操作界面
?详细且新的西门子电机数据库，包括 IE3 和 IE4 电机。
?仿真高达 CLASS 30 的重载起动
?可以较新（例如，电机和负载类型、功能）
?通过很少的输入数据进行快速仿真
?显示带限值的起动操作曲线图
?用表格显示应用的适当软起动器
产品一览：模拟和结果列表
电路概念
三相控制 SIRIUS 3RW 软起动器可在两种不同电路中运行：
?内联 circuit：
直接串联电路隔离和保护电机的开关装置简单地同软起动器串联。电机通过三根导线连接到软起动器上。
?内部三角形电路
接线类似于三角形起动器。软起动器的每相与各电动机线圈串联。软起动器仅需承载相电流，该相电流大约等于电机额定电流(导线电流)的 58%。

SILIZED Design
?SILIZED semiconductor fuses have an extremely compact design. This means they have a very small footprint – particularly the NEOZED version
?The rugged and well-known DIAZED design complies with IEC 60269-3. It is globally renowned and can be used in many countries
?A huge range of fuse bases and accessories are available for the NEOZED and DIAZED versions of the SILIZED semiconductor fuses. This increases the application options in many devices.
Cylindrical Fuse Design
?Cylindrical fuses have an extremely compact design and a correspondingly small footprint
?The cylindrical fuses have IEC and UL approval and are suitable for universal use worldwide
?The use of SITOR cylindrical fuses in the cylindrical fuse holders and bases has been tested with regard to heat dissipation and maximum current loading. This makes planning and dimensioning easier and prevents consequential damage
?The use of fuse holders as switch disconnectors expands the area of application of these devices and increases operating safety.

?Clear and visible conductor connection that can be easily checked when using MINIZED switch disconnectors D02. This facilitates cable entry and saves time.
?Bus-mounting of MINIZED fuse switch disconnectors D01 with three-phase pin busbar, which can be cut to length. Tried and tested.
?Single-phase busbar mounting of NEOZED fuse bases.
?Clear and visible conductor connection that can be easily checked when using NEOZED comfort base D02. This facilitates cable entry and saves time.
?Bus-mounting of NEOZED fuse bases made of molded plastic on three-phase busbar with fork plug, which can be cut to length. Frequently used.
?Bus-mounting of NEOZED fuse bases made of ceramic on three-phase busbar with fork plug, which can be cut to length. Most common application.
?Uniform solution for all sizes - ** detectors reliably indicate that the fuse has tripped. Tripped fuses are quickly located. This saves time and increases plant availability.
?The LV HRC ** detector top is a cost-effective solution for the monitoring of Siemens LV HRC fuse links of sizes 000, 00, 1 and 2.
?The silver-plated Lyra contact provides a large contact area for the pin of the LV HRC fuse link. This improves heat transmission and lowers the temperature. It also minimizes ageing of the fuse link in the maximum load range, in particular when using SITOR semiconductor fuses.
?The large contact area also facilitates replacement of LV HRC fuse links.
?The spring washer tensioning the contact is mechanically galvanized. This will prevent hydrogen embrittlement. The contact is resistant to aging and there will be no dreaded annealing of contacts, which considerably improves operating safety.

优势
?SITOR 熔断器具有各种负载系数，可确保高度的操作安全和工厂可用性。
?SITOR 熔断器的散热和电流负载在 Siemens LV HRC 熔断器座或隔离开关中已进行测试。这使规划和尺寸设计较加容易，避免了间接损坏。
?较高的质量标准可确保良好的特性曲线和精度一致性。从而可保证设备长期保护。
操作等级
根据功能和操作等级以熔断器进行分类。在LV HRC设计中的SITOR半导体熔断器适用于下列操作等级：
?aR:用于功率半导体器件的短路保护
（部分范围保护）
?gR:用于功率半导体器件的保护
（完全范围保护）
?gS:gS操作等级将电缆和线路保护与半导体器件保护相结合（全范围保护）。

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