100
Current reversal and weak-end infeed logic
(ZCAL)
Chapter 4
Line distance
Figure 46:
Echo of a received carrier signal by the WEI function.
Figure 47:
Tripping part of the WEI logic - simplified logic diagram.
7.5
Input and output signals
Note:
Some signals may not be present depending on the ordered options.
Table 107: Input signals for the ZCAL (ZCAL-) function block
ZCAL-BLOCK
ZCAL-CRLLn
ZCAL-WEIBLKn
ZCAL-ECHOLn
ECHOLn - cont.
xx03000079.vsd
ZCAL-VTSZ
>1
t
tWEI
t
200 ms
&
t
50 ms
t
200 ms
&
WEI = Trip
ZCAL-CBOPEN
STUL1N
STUL2N
STUL3N
&
t
100 ms
>1
&
&
&
ECHOLn - cont.
t
15 ms
t
15 ms
t
15 ms
>1
ZCAL-TRWEI
ZCAL-TRWEIL1
ZCAL-TRWEIL2
ZCAL-TRWEIL3
en00000551.vsd
Signal
Description
BLOCK
Blocks function
IRV
Activates current reversal logic
IRVL1
Activates current reversal logic in phase L1
IRVL2
Activates current reversal logic in phase L2
IRVL3
Activates current reversal logic in phase L3
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: ......