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6BPOWER QUALITY
PROTECTION, CONTROL AND METERING FUNCTIONS
2.6.10. SHORT TERM VOLTAGE VARIATION
A short term voltage variation is a deviation above or below a user defined threshold
from the nominal value of some of the phase voltages for more than 3 seconds and less
than 5 minutes. The relay records the following information regarding such events
Short term voltage variation counter:
Indicates the number of this kind of
events that have been detected including the present one. This counter has a
maximum limit of 100 after which it changes to zero.
Date and time:
Date and time when the event was detected.
Event duration:
Time span of the event.
Voltages of the three phases:
Stores the value of the phase voltages at the
moment of the maximum voltage variation.
Current of the three phases:
Stores the value of the current for each of the
phases at the moment of the maximum voltage variation.
2.6.11. LONG TERM VOLTAGE VARIATION
A long term voltage variation is a deviation above or below a user defined threshold from
the nominal value of some of the phase voltages for more than 3 seconds and less than
5 minutes. The relay records the following information regarding such events:
Long term voltage variation counter:
Indicates the number of this kind of
events that have been detected including the present one. This counter has a
maximum limit of 100 after which it changes to zero.
Date and time:
Date and time when the event was detected.
Event duration:
time span of the event
Involved phases:
Information about the phases where the event was detected.
Voltages of the three phases:
Stores the value of the phase voltages at the
moment of the maximum voltage variation.
Current of the three phases:
Stores the value of the current for each of the
phases at the moment of the maximum voltage variation
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...