Schweitzer Engineering Laboratories SEL-321 - Table 2.7: Primary Elements; Table 2.8: Primary Element Summary

2-24 Specifications Date Code 20011026
SEL-321/321-1 Instruction Manual
The relay’s primary elements are listed in Table 2.7. The status of these elements is updated by
the relay logic, and these elements serve as a source for use in SEL
OGIC control equations. The
most commonly used elements are shown as shaded items. All outputs, except ALARM, can be
programmed using the primary elements and SEL
OGIC control equations.
Table 2.7: Primary Elements
TAR Elements
2
Z4G Z3G Z2G Z1G M4P M3P M2P M1P
3
Z4GT Z3GT Z2GT LOP M4PT M3PT M2PT OPA
4
67Q4 67Q3 67Q2 67Q1 67N4 67N3 67N2 67N1
5
67Q4T 67Q3T 67Q2T OST 67N4T 67N3T 67N2T OSB
6
PD1 3P27 27L 50H 50MF 51NT 51QT 51PT
7
ZLOAD SOTFE TCM * 3PO SPO REJO PD2
8
3P50R 51NP 51QP 51PP 50G 50PP 50M 50L
9
50Q4 50Q3 50Q2 50Q1 50N4 50N3 50N2 50N1
10
50ABC X6ABC X5ABC 3PT TPC TPB TPA 32QF
11
3P59 59L 59N 59PR 59PB 59QL 59PL 50Q
12
BTX * STOP START FIDEN FSC FSB FSA
13
32QR Z1X CC EKEY Z3RB ATB ECTT KEY
14
XAG4 XAG3 XAG2 XAG1 MAG4 MAG3 MAG2 MAG1
15
XBG4 XBG3 XBG2 XBG1 MBG4 MBG3 MBG2 MBG1
16
XCG4 XCG3 XCG2 XCG1 MCG4 MCG3 MCG2 MCG1
17
MBC4 MBC3 MBC2 MBC1 MAB4 MAB3 MAB2 MAB1
18
SPOC SPOB SPOA * MCA4 MCA3 MCA2 MCA1
19
50HH OSTI 50CA 50BC 50AB * * *
20
RBAD CBAD LBOK ROK * * * TOP
* Reserved for future use
Table 2.8: Primary Element Summary
Element Comment
Z4G
Z3G
Z2G
Z1G
M4P
M3P
M2P
M1P
Zone 4 Mho and/or Quad. Distance, Instantaneous
Zone 3 Mho and/or Quad. Distance, Instantaneous
Zone 2 Mho and/or Quad. Distance, Instantaneous
Zone 1 Mho and/or Quad. Distance, Instantaneous
Zone 4 Phase Distance, Instantaneous
Zone 3 Phase Distance, Instantaneous
Zone 2 Phase Distance, Instantaneous
Zone 1 Phase Distance, Instantaneous