ABB RELION REX640 Technical Manual page 980

Protection functions
Figure 555: Bullet combi tripping characteristic. Pol. in the figure means the shape
of the characteristic is affected by the selected polarization method, Pol quantity
zone = "Cross pol", "Pos. seq. volt.", "Self pol"
4.7.1.6 Recorded data
The required information for later fault analysis is recorded when the recording
function of DSTPDIS is triggered by activating TRIGG_REC input or writing to the
corresponding DO "LD0.GFCPDIS1.RcdTrg.Oper.ctlVal". During external triggering
(input signal TRIGG_REC), the recorded data of all zones and the phase selection
function are recorded.
A total of three sets of recorded data are saved in data banks Fault 1, 2 and 3. Data
bank Fault 1 holds the most recent recorded data and the older data is moved into
the following banks (1->2 and 2->3) when triggering occurs. When all three banks
have data and a new triggering occurs, the latest data is placed into bank 1 and the
data in bank 3 is overwritten by the data from bank 2.
Table 923: Recorded data for the phase selection function
Parameter name
Time
Release PE-loop
Release PP-loop
Earth fault detected
Cross country fault
Earth fault direction
Operate of all zones
980
Non-directional
X
R
Directional mode Zx
Forward
Pol.
X
R
Pol. = polarization method affects (mho) zone shape
Description
Recorded data time stamp
Release signals for PE loops, GFC
Release signals for PP/3P loops, GFC
Indication of a single-phase earth fault, GFC
Indication of a cross-country fault (high imp.
earthed), GFC
Earth-fault direction (low imp. earthed), GFC
Operate signals of all zones (this is zone infor-
mation but it is taken here because it represents
all zone information combined)
1MRS759142 F
Reverse
Pol.
X
R
Technical Manual
REX640