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1BPROTECTION FUNCTIONS
PROTECTION, CONTROL AND METERING FUNCTIONS
2.1.11.3. VOLTAGE SEQUENCE INVERSION PROTECTION
This is a definite time unit. It only works due to the programmed phase voltage
sequence. If it is incorrect then the trip signal is t seconds after its detection, t being
the Definite Time configured for this function.
Figure 2-26 shows the logical diagram for the definite time unbalanced voltage 47I.
Figure 2-26 Definite Time voltage sequence inversion protection
The settings for these functions are shown in the Table 2-16
Setting
Minimum
Maximum
Step
Notes
Enable
YES/NO
Definite time (s)
0,00
60,00
0,01
Table 2-16 Settings range of instantaneous characteristics. Voltage unbalance
2.1.12. FREQUENCY PROTECTION
2.1.12.1. GENERAL DESCRIPTION (81)
This function has 8 steps which can be programmed as low (81U) or high (81O). It
also has 4 steps for a frequency derivative function (81R). The operation of this
function is conditioned to the presence of a minimum supervisory voltage.
blkAnyProt
blk47
A
B
C
1
2
Sequence
Caculation
V
C
V
1
V
2
V
B
blk47I
+
-
Sequence
Def. Time
0
r47IPkup
r47ITrip
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...