Functions
2.16 Function Control and Circuit Breaker Test
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
238
Reset of Stored LED / Relays
Pickup of a new protection function generally deletes all stored LED / relays so that only the information of the
latest fault is displayed at a time. The deletion of the stored LED and relays can be inhibited for a settable time
under address 625 T MIN LED HOLD. Any information occurring during this time are then combined with a
logical OR function.
Under address 610 FltDisp.LED/LCD, also the information of the latest fault stored on LED and relays can
be deleted with the setting (Target on TRIP) unless this fault has lead to a trip command of the device.
Note
Setting the address 610 FltDisp.LED/LCD to (Target on TRIP) only makes sense if address 625 T MIN
LED HOLD is set to 0.
Figure 2-111 Creation of the reset command for saved LED / relays
2.16.3.2 Switching Statistics
The number of trips initiated by the device 7SD610 are counted. If the device is capable of single-pole tripping,
a separate counter for each circuit breaker pole is provided.
Furthermore, for each trip command the interrupted current for each pole is acquired, output in the trip log and
accumulated in a memory. The maximum interrupted current is stored as well.
If the device is equipped with the integrated automatic reclosure, the automatic close commands are also
counted, separately for reclosure after single-pole tripping, after three-pole tripping as well as separately for the
first reclosure cycle and further reclosure cycles.
The counter and memory contents are secured against loss of auxiliary voltage. They can be set to zero or to
any other initial value. For more details, refer to the SIPROTEC 4 System Description.
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