ABB Relion REQ650, Applications Manual

Page: 279 / 340

• Disturbance reports are not stored.
• LED information (yellow - start, red - trip) is not stored or changed.
Operation = On :
• Disturbance reports are stored, disturbance data can be read from the local HMI
and from a PC using PCM600.
• LED information (yellow - start, red - trip) is stored.
Every recording will get a number (0 to 999) which is used as identifier (local HMI,
disturbance handling tool and IEC 61850). An alternative recording identification is
date, time and sequence number. The sequence number is automatically increased by
one for each new recording and is reset to zero at midnight. The maximum number of
recordings stored in the IED is 100. The oldest recording will be overwritten when a
new recording arrives (FIFO).
To be able to delete disturbance records, Operation parameter has to
be On .
The maximum number of recordings depend on each recordings total
recording time. Long recording time will reduce the number of
recordings to less than 100.
The IED flash disk should NOT be used to store any user files. This
might cause disturbance recordings to be deleted due to lack of disk
space.
Recording times
The different recording times for Disturbance report are set (the pre-fault time, post-
fault time, and limit time). These recording times affect all sub-functions more or less
but not the Event list function.
Prefault recording time ( PreFaultRecT ) is the recording time before the starting point
of the disturbance. The setting should be at least 0.1 s to ensure enough samples for the
estimation of pre-fault values in the Trip value recorder function.
Postfault recording time ( PostFaultRecT ) is the maximum recording time after the
disappearance of the trig-signal (does not influence the Trip value recorder function).
Recording time limit ( TimeLimit ) is the maximum recording time after trig. The
parameter limits the recording time if some trigging condition (fault-time) is very long
or permanently set (does not influence the Trip value recorder function).
1MRK 505 291-UEN A
Section 12
Monitoring
273
Application manual