Logic Of The Function; Application And Setting Notes - Siemens 7SR51 Device Manual

Protection and Automation Functions
5.3 27Vx Undervoltage Protection – Vx

Logic of the Function

5.3.3
[lo_7SR5_27Vxlogicdiagram, 1, en_US]
Figure 5-4

Application and Setting Notes

5.3.4
Parameter: 27Vx Common > UV Guard Setting
•
Default setting: 5 V
When the measured voltage is below this setting operation of the 27Vx function elements can be
blocked.
Parameter: Element
•
Default setting: Disabled
This setting is used to allow the element to be switched on and off if it is not required. A separate setting
is provided for each element. These settings can be used to select the number of elements required.
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Logic Diagram: 27Vx Undervoltage Protection – Vx
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019