SIEMENS
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Siemens IC 10 · 2017
Relays
SIRIUS 3UG45, 3UG46 Monitoring Relays for Stand-Alone Installation
Residual Current Monitoring
残留电流监测继电器
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概述
SIRIUS 3UG4625 monitoring relay
3UG4625残留电流监测继电器用于
conjunction with the 3UL23 residual-current transformers for
monitoring plants in which higher residual currents are increas-
ingly expected due to ambient conditions. Monitoring encom-
通过A纯交流残留电流或AC残留电流
pulsating DC fault current component (transformer type A in
根据DIN VDE 0100-530/IEC TR 60755）。
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好处
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Worldwide use thanks to wide voltage range from
24至240 V AC/DC
•
High measuring accuracy of ± 7.5 %
•
Permanent self-monitoring
•
警告和断开的可变阈值值
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Freely configurable delay times and RESET response
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永久显示实际值和故障诊断
the display
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High level of flexibility and space saving through installation
of the transformer inside or outside the control cabinet
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宽度22.5毫米
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所有具有可移动终端的版本
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All versions with screw or spring-type terminals
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Application
监测可能发生残留电流的植物，
例如由于灰尘沉积或水分，多孔电缆和导线，
or capacitive residual currents.
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技术规格
3UG4625监视继电器
主导体和负载的任何中性导体
连接，通过环形环的开口进行路由
残留电流变压器的核心。次要绕组是
placed around this annular strip-wound core to which the moni-
连接杜松继电器。
If operation of a plant is fault-free, the sum of the inflowing and
向外电流等于零。然后没有电流在
secondary winding of the residual-current transformer.
但是，如果残留物的下游发生绝缘断层
current operated circuit breaker, the sum of the inflowing cur-
租金大于向外电流的租金。差异
电流 - 即残留电流 - 诱导次级电流
在变压器的次要绕组中。这个电流是
evaluated in the monitoring relay and is used on the one hand to
display the actual residual current and on the other, to switch the
relay if the set warning or tripping threshold is overshot.
If the measured residual current exceeds the set warning value,
the associated changeover contact instantly changes the
switching state and an indication appears on the display.
If the measured residual current exceeds the set tripping value,
设定的延迟时间开始和关联的继电器符号
闪烁。在此时间到期，相关的转换
contact changes the switching state.
ON-delay time for motor start
能够在检测到残留电流时启动驱动器，
the output relays switch to the OK state for an adjustable
根据选定的开路原理，延期时间
or closed-circuit principle.
如果设定的阈值值，转换触点不会反应
在此期间被夸大了。
选择闭路原理
Residual current monitoring with Auto RESET (Memory = no)
If the device is set to Auto RESET, the relay switches back to the
OK state for the tripping value once the value falls below the set
hysteresis threshold and the display stops flashing.
如果值下降，关联的继电器会改变其切换状态
below the fixed hysteresis value of 5% of the set warning value.
Any overshoots are therefore not stored.
!
>
> !
Hysteresis
= 0,02 a
滞后= 5％
onDelay
onDelay
Init
延迟
IC01_00225
A
1-A2
11/14
11/12
21/24
21/22
= 0
©Siemens AG 2016