![background image](http://html1.mh-extra.com/html/arteche/smart-p500/smart-p500_instruction-manual_2977391104.webp)
1BPROTECTION FUNCTIONS
PROTECTION, CONTROL AND METERING FUNCTIONS
fulfilled the internal flag for “close permission” is activated, otherwise the
“synchronization failure” flag is activated.
The function compares the voltage signals from the same phase at both sides of the
switch (bus or generation with line or load) so they must have the same
transformation ratios. The user can select the phase with which to perform the
comparison.
Figure 2-34 shows the logical diagram for the synchrocheck function with low voltage
permission.
Figure 2-34 Synchrocheck function elements. Low voltage permission.
The conditions for a close permission are the following:
Low voltage permission.
Permission is given when there is no voltage at one
or both sides of the switch according to the following settings:
V
Línea
V
min. Línea
Low voltage
permission
+
-
+
-
V
Barra
I
min. Barra
Line and Bus
“dead”
A
Line ‘dead’
Bus ‘live’
Line ‘live’
Bus ‘dead’
Line ‘live’
Bus ‘dead’
V
s
V
p
ang
ang
-
abs
+
-
Programmed angular difference
Active Angle
Check
V
A
M
F
TCC
0
Synchronism
permission
blk25Ang
blk25Mag
blk25freq
Summary of Contents for smART P500
Page 1: ...Instruction Manual Multifunction Protection Relay smART P500...
Page 23: ...2BTABLES INDEX THIS PAGE HAS BEEN LEFT BLANK INTENTIONALLY...
Page 39: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 9 Wye Wye Connection measured neutral...
Page 40: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 10 Wye Wye Connection sensitive neutral...
Page 41: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 11 Open Delta Connection measured neutral...
Page 42: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 12 Open Delta Connection sensitive neutral...
Page 511: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 6 Moderately ANSI curve...
Page 513: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 7 Very inverse ANSI curve...
Page 515: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 8 Extremely inverse ANSI curve...
Page 532: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 14 Recloser Curves 101 119...
Page 535: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 15 Recloser Curves 120 142...
Page 538: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 16 Recloser Curves 151 202...