1BPROTECTION FUNCTIONS
PROTECTION, CONTROL AND METERING FUNCTIONS
2.1.3. GROUND OVERCURRENT PROTECTION
2.1.3.1. GENERAL DESCRIPTION
Applicable for grounded-neutral systems; the settings for the definite time, inverse
time and instantaneous functions are independent (functions 50G/51G).
2.1.3.2. TIME CHARACTERISTICS (51G)
Figure 2-7 shows the logical diagram for the sensitive neutral time overcurrent
function.
Figure 2-7 Sensitive neutral time overcurrent elements
2.1.3.2.1. SETTING RANGES (6 GROUPS)
The settings for these functions are shown in the Table 2-6.
Setting
Minimum
Maximum
Step
Notes
Enable
YES/NO
Pickup (A)
0,005
10
0,001
For In=1 A
0,025
25
0,01
For In=5 A
Time Multiplier(Dial)
0,05
1,09
0,01
For IEC curves
0,5
30
0,01
For ANSI curves
0,5
15
0,01
For US curves
Time Adder
0
100
0,01
blkAnyOC
blkAnyProt
blk51
+
-
IFG
MED
IFG Pickup
blk51G
r51GPkup
(pickup)
r51GTrip
(trip)
Time Element
Time Element
•
Pickup
•
Curve
•
Curve family
•
Characteristic
•
Electromechanical Reset (S/N)
•
Definite time
•
Curve Modifiers
Содержание smART P500
Страница 1: ...Instruction Manual Multifunction Protection Relay smART P500...
Страница 23: ...2BTABLES INDEX THIS PAGE HAS BEEN LEFT BLANK INTENTIONALLY...
Страница 39: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 9 Wye Wye Connection measured neutral...
Страница 40: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 10 Wye Wye Connection sensitive neutral...
Страница 41: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 11 Open Delta Connection measured neutral...
Страница 42: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 12 Open Delta Connection sensitive neutral...
Страница 499: ...1BIEC 255 4 AND BS142 CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 1 Standard inverse IEC Curve...
Страница 501: ...1BIEC 255 4 AND BS142 CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 2 Very inverse IEC Curve...
Страница 503: ...1BIEC 255 4 AND BS142 CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 3 Extremely inverse IEC curve...
Страница 505: ...1BIEC 255 4 AND BS142 CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 4 Short inverse IEC curve...
Страница 507: ...1BIEC 255 4 AND BS142 CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 5 Long inverse IEC curve...
Страница 511: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 6 Moderately ANSI curve...
Страница 513: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 7 Very inverse ANSI curve...
Страница 515: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 8 Extremely inverse ANSI curve...
Страница 532: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 14 Recloser Curves 101 119...
Страница 535: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 15 Recloser Curves 120 142...
Страница 538: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 16 Recloser Curves 151 202...
Страница 541: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 17 Recloser Curves 25 Amp 35 Amp A B C D E...
Страница 544: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 18 Recloser Curves 50 Amp 70 Amp A B C D E...
Страница 547: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 19 Recloser Curves 100 Amp 140 Amp A B C D E...
Страница 550: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 20 Recloser Curves 160 Amp 185 Amp A B C D E...
Страница 553: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 21 Recloser Curves 225 Amp A B C D E...
Страница 556: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 22 Recloser Curves 280 Amp 280X Amp A B C D E...
Страница 559: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 23 Recloser Curves 400 Amp 400X Amp A B C D E...
Страница 562: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 24 Recloser Curves 560 Amp 560X Amp A B C D E...