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2BOTHER FUNCTIONS
PROTECTION, CONTROL AND METERING FUNCTIONS
2.2.1.2. SETTINGs RANGE (1 GROUP)
The settings for this function are the following in Table 2-26.
Setting
Minimum
Maximum
Step
Notes
Enable
YES/NO
Phase Pickup (A)
0,02
20
0,001
For In = 1 A
0,10
100
0,001
For In = 5 A
Neutral Pickup (A)
0,02
20
0,001
For In = 1 A
0,10
100
0,001
For In = 5 A
Time Delay (s)
0,00
60,00
0,01
Table 2-26 Setting ranges of breaker failure
2.2.2. BREAKER MONITOR (74TC/CC)
2.2.2.1. GENERAL DESCRIPTION
This function is enabled when a number of trips greater than the pre-programmed
number happen within the programmed period of time. Once this state is reached, the
protection switches to the definitive time state.
With this function, a breaker pole wear calculation can be performed. For this
purpose, the desired type of calculation can be selected by the user as follows:
If k∑I
2
is chosen, the kI
2
is calculated (in k A
2
).
If ∑I is chosen, only the sum of currents is calculated (in kA).
If k∑I
2
*t is chosen, the sum of kI
2
*t values is calculated (in k A
2
).
Note: this function uses the current from the faulted phases for calculation. The kA
2
stands for kilo Amperes squared. (A*A/1000)
Figure 2-49 shows the logical diagram for the breaker monitor function (74TC/CC)
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...