Schweitzer Engineering Laboratories SEL-321 - Page 168

4-6 Event Reporting Date Code 20011026
SEL-321/321-1 Instruction Manual
Column Value Description
ZBC . If no BC phase-phase distance element set
1
If Zone 1 BC phase-phase distance element (MBC1) set
2
If Zone 2 BC phase-phase distance element (MBC2) set, not ZBC1
3
If Zone 3 BC phase-phase distance element (MBC3) set, not
ZBC1│ZBC2
4
If Zone 4 BC phase-phase distance element (MBC4) set, not
ZBC1│ZBC2│ZBC3
ZCA
.
If no CA phase-phase distance element set
1
If Zone 1 CA phase-phase distance element (MCA1) set
2
If Zone 2 CA phase-phase distance element (MCA2) set, not ZCA1
3
If Zone 3 CA phase-phase distance element (MCA3) set, not
ZCA1│ZCA2
4
If Zone 4 CA phase-phase distance element (MCA4) set, not
ZCA1│ZCA2│ZCA3
ZAG
.
If no AG mho or quadrilateral ground distance element asserted
1
If Zone 1 AG element (XAG1 + MAG1) set
2
If Zone 2 AG element (XAG2 + MAG2) set, not ZAG1
3
If Zone 3 AG element (XAG3 + MAG3) set, not ZAG1│ZAG2
4
If Zone 4 AG element (XAG4 + MAG4) set, not ZAG1│ZAG2│ZAG3
ZBG
.
If no BG mho or quadrilateral ground distance element asserted
1
If Zone 1 BG element (XBG1 + MBG1) set
2
If Zone 2 BG element (XBG2 + MBG2) set, not ZBG1
3
If Zone 3 BG element (XBG3 + MBG3) set, not ZBG1│ZBG2
4
If Zone 4 BG element (XBG4 + MBG4) set, not ZBG1│ZBG2│ZBG3
ZCG
.
If no CG mho or quadrilateral ground distance element asserted
1
If Zone 1 CG element (XCG1 + MCG1) set
2
If Zone 2 CG element (XCG2 + MCG2) set, not ZCG1
3
If Zone 3 CG element (XCG3 + MCG3) set, not ZCG1│ZCG2
4
If Zone 4 CG element (XCG4 + MCG4) set, not ZCG1│ZCG2│ZCG3
OOS t OOS timing
B
OOS Block (OSB * !OST)
T OOS Trip (OST)
32 Negative-sequence directional element decision.
There are two negative-sequence directional elements. Both directional
elements cannot be asserted at the same time. The following labeling
system is used in the 32 column:
Q
forward (32QF)
q
reverse (32QR)
.
none