SIEMENS
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Siemens IC 10 · 2017
特殊应用的接触器
铁路申请的接触器
SIRIUS 3RT contactors with extended operating range, 3-pole
4
■
概述
Standards
IEC 60947-4-1，DIN EN 60947-4-1，
IEC 60077-2，DIN EN 60077-2
根据IEC 60529，接触器是手指安全的
(exception: S3 series resistor). The auxiliary conductor and
线圈端子都是弹簧型端子。
环境温度
允许的环境温度用于操作
接触器（整个线圈操作范围内）为-40至+70°C。
Performance range
3RT接触器的各种尺寸从S00到S12到
250 kW或500 a（400 V时AC-3）。
Operating range of contactor operating mechanisms
Sizes S00 to S3
The solenoid coils of the 3RT2 contactors have an extended coil
operating range from max. 0.7 to 1.25 x Us and are fitted as
标准抑制器。开场延迟是conse-
比标准接触器长2至5 ms。
尺寸S6至S12
The operating mechanism for the 3RT10 contactors features
接触器线圈的固态控制。过电压阻尼
操作机构的线圈已经集成到电气中
tronics. The operating mechanisms are powered via a supply
工作范围为0.7至1.25 x的电压
U
s
, optionally
还根据选定的操作方式进行控制。
Alternatively, control is via the separate 24 to 110 V DC control
signal input.
Three rated voltage ranges are available as direct voltage (DC):
•24 V DC
•72 V DC
• 110 V DC
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Application
Besides standard approval in compliance with IEC 60974-4-1,
具有扩展操作范围的接触器也是
approved in compliance with IEC 60077-2, thus fulfilling the
requirement for use in railway applications.
因此，它们适合增加要求，例如
•
extended temperature range in comparison with the regular
标准IEC 60497-4-1或
•
电磁线圈的扩展工作范围或
•
对机械振荡和振动的阻力增加
is warranted. The design of the terminals in the spring-type
connection system also contributes toward vibration resis-
tance。
带有常规线圈的3RT20接触器
Control and auxiliary circuits
这些接触器的操作范围从
0.7 to 1.25 x
U
s
;在S00尺寸上，线圈装有抑制器
二极管，在带有变量的尺寸S0上。另一个系列电阻是
不需要。
笔记：
无法安装一个额外的辅助开关块。
并排安装
并排安装需要10毫米的间隙
ambient temperatures > 60 °C
70°C。
3RT201接触器具有串联电阻器
Control and auxiliary circuits
这些接触器的电磁线圈具有延长的线圈
工作范围从0.7到1.25 x
U
s
并作为标准配合
用抑制器（抑制器二极管或变量作为
首选）。
接触器的直流电磁系统已修改
(to holding excitation) by means of a series resistor.
3RT201 to 3RT204 contactors with solid-state operating
mechanism, extended operating range
Control and auxiliary circuits
这些接触器的电磁线圈具有延长的线圈
工作范围从0.7到1.25 x
U
s
1）
并被安装为stan-
dard with varistors to provide protection against overvoltage.
The contactors are energized via upstream control electronics
that ensure the coil operating range of 0.7 to 1.25 x
U
s
1）
晒黑
ambient temperature of 70 °C. They are supplied as complete
units with integrated coil electronics. A varistor is integrated for
damping opening surges in the coil.
The possibility of mounting auxiliary switches is the same as that
for equivalent standard contactors for switching motors in the
matching size
（请参阅3RT20接触器的概述图
从第3/7页开始）
.
并排安装
这些接触器版本的尺寸S00和S0，并排
允许在高达70°C的环境温度下安装。
1）
例外：3RT204 .-。x ...-0la2：0.7至1.2 x
U
s
.
©Siemens AG 2016