'(& )( )'& &) ( &!& ")& &$(( $# Ć %&( $# #)" &&#$
6 - 28
Siemens AG ⋅ May 1998
6.2.7 Operational event recording - block 71
Operational events yield information about the status
of the protection system during service. Important
events and status changes are chronologically listed
from DA 7100/ZE. Time information is shown in minĆ
utes. Up to 99 operational events are stored. If more
events are issued the oldest are overwritten.
The input of the codeword (password) is not required
for reading out the operational events buffer. The valĆ
ues are not updated during read-out. Only after re-
entering block 71 the updated values are displayed.
After selection of DA 7100/ZE and scrolling with keys
A"the operational events are displayed.
Events and alarms can be recorded as they come
(pick-up) (C) or when they go (drop-off) (G).
The operational events for the 7SS52 are summarized
in Appendix A 1.2.
There are two types of operational events:
D Isolator events (changes of status; failures):
Table 6.4 Isolator events (changes of status; failures)
Event name Supplementary information
Isol ON
Isol OFF
Isol Flt pla
Isol Flt run
Bay DC Fail
Time + isol. name + bay no.
Time + isol. name + bay no.
Time + isol. name + bay no.
Time + isol. name + bay no.
Time + bay no.
Notes:
1. For each change of isolator status one
event is
generated, i.e. either
- the new isolator status or
- a faulty status.
2. Isolator status events are only registered as
"Coming"
and
D Supervisory events
Operational events are events which are generĆ
ated by the continuous self-monitoring process,
or which indicate conditions which are not directly
connected with protection fault processing.
Supervisory events are registered as "Coming" or
"Going".
Each event is tagged with the current relative time
counter. The start of the relative time refers to the
instant of the device start-up.
Table 6.5 Supervisory events
Event name Short text Supplementary information
Disturbance with protection blocking
Disturbance without protection blocking
Diff current supervision: BZ-01
Diff current supervision: BZ-02
Diff current supervision: BZ-03.
Diff current supervision: BZ-04
Diff current supervision: BZ-05
Diff current supervision: BZ-06
Diff current supervision: BZ-07
Diff current supervision: BZ-08
Err:PROT BLOCK
Err:PROT ACTIVE
Id-sup BZ01
Id-sup BZ02
Id-sup BZ03
Id-sup BZ04
Id-sup BZ05
Id-sup BZ06
Id-sup BZ07
Id-sup BZ08
Time + C/G
Time + C/G
Time + C/G + ZPS-BSZ-No + phase
Time + C/G + ZPS-BSZ-No + phase
Time + C/G + ZPS-BSZ-No + phase
Time + C/G + ZPS-BSZ-No + phase
Time + C/G + ZPS-BSZ-No + phase
Time + C/G + ZPS-BSZ-No + phase
Time + C/G + ZPS-BSZ-No + phase
Time + C/G + ZPS-BSZ-No + phase
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