Usb Power; Battery Power; Sleep Mode; Low Battery Indication - Siemens 7SR45 Argus User Manual

5. The optimization of the operating time is not effective if the fault current is not stable during the boot up time.
3.15.2

USB Power

In the USB mode, even though protection functions are inactive, all the settings can be edited. Both the binary
input and binary output are operational in the USB power mode. The impulse output cannot be operated with USB
power.
3.15.3

Battery Power

In the battery mode, even though protection functions are inactive, all the settings can be edited. Both the binary
input and binary output is operational in the battery power mode. The pulse output cannot be operated with
battery power.
The battery power is used to operate 7SR45 self powered overcurrent and earth fault relay only when both CT
power and USB power are not available.
In the battery mode, the relay is energized by pressing the BAT ON/OFF key or if any binary input status is
changed.
In the battery power mode, if no keys are pressed for 60 s, the relay goes to sleep mode automatically.
By default, in the battery mode, the backlight is OFF.
3.15.3.1 Battery Profile
The Battery Profile menu provides the usage of battery power consumption of the different application modules.
The below table shows the battery profile parameter data and the status of the operations performed on the
battery power.
Battery Profile Parameter
Device ON Dur'n
Backlit ON Dur'n
BO Oper'n Count
BI Oper'n Count
The battery profile parameters data can be cleared with the DATA STORAGE > Clr Battery Data setting in HMI.
NOTE:
When replacing the battery, the battery profile parameters data should be cleared.
3.15.4

Sleep Mode

Sleep Mode is active when the CT power and USB power are not available. When the relay is in sleep mode, the
user can access the relay by pressing the BAT ON/OFF key. In case of inactivity the relay goes to the sleep
mode after 60 s.
NOTE:
During the sleep mode condition, it is recommended to press the BAT ON/OFF key to wake up the relay. It is also
recommended not to press the menu navigation keys.
3.15.5

Low Battery Indication

Low battery LED indication is displayed when the battery voltage falls below 2.0 V. In the low battery condition, if
the relay starts, the LCD displays as "INSUFFICIENT ENERGY" and goes back to sleep mode.
In the low battery mode, the backlight will not TURN ON.
The low battery can be mapped to a binary output and can be used for low battery status indication.
NOTE:
It is recommended to replace the battery when the low battery indication is displayed.
© 2017 Siemens Protection Devices Limited
Table 3-12 Battery Profile Parameter
The duration of the device powered on with the battery source only.
The duration of the LCD backlight powered ON with the battery source
only.
The number of times the binary output operates with the battery source
only.
The number of times the binary input operates with the battery source
only.
7SR45 Description of Operation
Description
Chapter 1 Page 31 of 34
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