102
Current reversal and weak-end infeed logic
(ZCAL)
Chapter 4
Line distance
Table 109: Setting parameters for the current reversal and weak end infeed logic ZCAL
(ZCAL-) function
7.7
Technical data
Table 110: ZCAL - Current reversal and weak end infeed logic
Parameter
Range
Default
Unit
Description
CurrRev
Off / On
Off
-
Operating mode for the ZCAL function
tPickUp
0.000 -
60.000
Step: 0.001
0.000
s
Pickup time for current reversal function
tDelay
0.000 -
60.000
Step: 0.001
0.100
s
Output hold time for current reversal func-
tion
WEI
Off / Trip /
Echo
Off
-
Operating mode for the WEI function
tWEI
0.000 -
60.000
Step: 0.001
0.010
s
Coordination time for the WEI function
UPN<
10 - 100
Step: 1
70
% of U1b
Under voltage detection - ph-N measure-
ment
UPP<
20 - 170
Step: 1
70
% of U1b
Under voltage detection - ph-ph measure-
ment
Parameter
Setting range
Accuracy
Pickup time for current reversal,
tPickUp
0.000-60.000 s in steps of 0.001s
±
0.5%
±
10ms
Delay time for current reversal,
tDelay
0.000-60.000 s in steps of 0.001s
±
0.5%
±
10ms
Coordination time for weak end
infeed logic, tWEI
0.000-60.000 s in steps of 0.001s
±
0.5%
±
10ms
Detection level phase to neu-
tral voltage, UPN<
10-100% of U1b
±
2.5% of U
r
Detection level phase to phase
voltage, UPP<
20-170% of U1b
±
2.5% of U
r
at U
≤
U
r
±
2.5% of U at U>U
r
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: ......