Final Preparation Of The Device - Siemens siprotec 7SA522 User Manual

8.4

Final Preparation of the Device

Tighten the used screws at the terminals; those ones not being used
should be slightly fastened. Ensure all pin connectors are properly insert-
ed.
Caution!
Do not use force! The tightening torques according to Chapter 2 must not be exceed-
ed as the threads and terminal chambers may otherwise be damaged!
Verify that all service settings are correct. This is a crucial step because
some setting changes might have been made during commissioning.
The protective settings under device configuration, input/output configu-
ration are especially important (Section 5.1) as well as the power system
data, and activated Groups A through D (if applicable). All desired ele-
ments and functions must be set 21. See Chapter 6. Keep a copy of all
of the in-service settings on a PC.
Check the internal clock of the device. If necessary, set the clock or syn-
chronize the clock if it is not automatically synchronized. For assistance,
refer to Sub-section 7.2.1.
The Annunciation memory buffers should be cleared, particularly the Op-
erational messages and fault messages. Future information will then only
apply for actual system events and faults. To clear the buffers, press
0$,1 0(18 → $QQXQFLDWLRQ → 6HW5HVHW. Refer to Sub-section
7.1.1 if further assistance is needed. The numbers in the switching sta-
tistics should be reset to the values that were existing prior to the testing,
or to values in accordance with the user's practices. Set the statistics by
pressing 0$,1 0(18 → $QQXQFLDWLRQ → 6WDWLVWLF. Refer to Sub-
section 7.1.2 if more information is needed.
Press the key, several times if necessary, to return to the default dis-
ESC
play.
Clear the LEDs on the front panel by pressing the LED key. Any output re-
lays that were picked up prior to clearing the LEDs are reset when the
clearing action is performed. Future indications of the LEDs will then ap-
ply only for actual events or faults. Pressing the key also serves as a
LED
test for the LEDs because they should all light when the button is pushed.
Any LEDs that are lit after the clearing attempt are displaying actual con-
ditions.
The green "581" LED must be on. The red "(5525" LED must not be lit.
Close the protective switches. If test switches are available, then these
must be in the operating position.
The device is now ready for operation.
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7SA522 Manual
C53000-G1176-C119-2