72
Automatic switch onto fault logic (SOTF)
Chapter 4
Line distance
2.4
Logic diagram
Figure 29:
SOTF function - simplified logic diagram
2.5
Input and output signals
Table 86:
Input signals for the SOTF (SOTF-) function block
Path in local HMI: ServiceReport/Functions/Impedance/ SwitchOntoFlt/FuncOutputs
Table 87:
Output signals for the SOTF (SOTF-) function block
2.6
Setting parameters
Path in local HMI: Settings/Functions/Groupn/Impedance/SwitchOntoFlt
Table 88:
Setting parameters for the automatic switch onto fault logic SOTF (SOTF-)
function
S O T F -B C
S O T F -D L C N D
&
S O T F -N D A C C
t
2 0 0 m s
> 1
&
S O T F -B L O C K
t
1 0 0 0 m s
&
t
1 5 m s
S O T F -T R IP
e n 0 0 0 0 0 4 9 2 .v s d
Signal
Description
BLOCK
Blocks function
NDACC
Connected to function(s) to be released for immediate tripping when
SOTF function is enabled
DLCND
Connected to dead line detection function to provide automatic
enabling of SOTF function
BC
Enabling of SOTF function by circuit breaker close command or nor-
mally closed auxiliary contact of the circuit breaker
Signal
Description
TRIP
Trip output
Parameter
Range
Default
Unit
Description
Operation
Off / On
Off
-
Operating mode for SOTF function
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: ......