99
Current reversal and weak-end infeed logic
(ZCAL)
Chapter 4
Line distance
7.3
Function block
Figure 43:
Function block for the ZCAL function, when used together with phase segregated
scheme communication logic
Figure 44:
Function block for the ZCAL function, when used together with the three phase
scheme communication logic
7.4
Logic diagram
Figure 45:
Current reversal logic.
xx00000186.vsd
ZCAL-
ZCAL
BLOCK
IRV
IRVL1
IRVL2
IRVL3
IRVBLK
IRVBLKL1
IRVBLKL2
IRVBLKL3
CBOPEN
VTSZ
WEIBLK
WEIBLK1
WEIBLK2
WEIBLK3
CRL
CRLL1
CRLL2
CRLL3
TRWEI
TRWEIL1
TRWEIL2
TRWEIL3
IRVL
IRVLL1
IRVLL2
IRVLL3
ECHO
ECHOL1
ECHOL2
ECHOL3
xx01000186.vsd
ZCAL-
ZCAL
BLOCK
IRV
IRVBLK
CBOPEN
VTSZ
WEIBLK
CRL
TRWEI
IRVL
ECHO
99000193.vsd
ZCAL-IRVLn
ZCAL-IRVBLKLn
ZCAL-IRVLLn
t
tDelay
&
t
tPickUp
t
10 ms
t
tPickUp
Summary of Contents for REL 501-C1 2.5
Page 1: ...Technical reference manual Line distance protection terminal REL 501 C1 2 5 ...
Page 2: ......
Page 26: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 42: ...30 Technical data Chapter 2 General ...
Page 66: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 142: ...130 Time delayed overvoltage protection TOV Chapter 6 Voltage ...
Page 162: ...150 Autorecloser AR Chapter 9 Control ...
Page 174: ...162 Event function EV Chapter 10 Logic ...
Page 210: ...198 Serial communication Chapter 12 Data communication ...
Page 226: ...214 Serial communication modules SCM Chapter 13 Hardware modules ...
Page 230: ...218 Terminal diagrams Chapter 14 Diagrams Figure 87 REL 501 C1 with DC switch ...
Page 234: ...222 Terminal diagrams Chapter 14 Diagrams ...
Page 237: ......