2-30
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS
CHAPTER 2: PRODUCT DESCRIPTION
2
Timer accuracy:
±3% of operate time or ±20 ms, whichever is greater
Operate time:
<30 ms at 1.10
×
pickup at 60 Hz
UNDERFREQUENCY
Minimum signal:
0.10 to 1.25 pu in steps of 0.01
Pickup level:
20.00 to 65.00 Hz in steps of 0.01
Dropout level:
0.03 Hz
Level accuracy:
±0.001 Hz
Time delay:
0 to 65.535 s in steps of 0.001
Timer accuracy:
±3% of operate time or ±1/4 cycle (whichever is greater)
Operate time:
typically 4 cycles at 0.1 Hz/s change
typically 3.5 cycles at 0.3 Hz/s change
typically 3 cycles at 0.5 Hz/s change
Typical times are average operate times including variables such as frequency change instance, test method, and so on, and can vary by
±0.5 cycles.
RATE OF CHANGE OF FREQUENCY
df/dt trend:
increasing, decreasing, bi-directional
df/dt pickup level:
0.10 to 15.00 Hz/s in steps of 0.01
df/dt dropout level:
96% of pickup
df/dt level accuracy:
80 mHz/s or 3.5%, whichever is greater
Overvoltage supv.:
0.100 to 3.000 pu in steps of 0.001
Overcurrent supv.:
0.020 to 30.000 pu in steps of 0.001
Pickup delay:
0 to 65.535 s in steps of 0.001
Reset delay:
0 to 65.535 s in steps of 0.001
Timer accuracy:
±3% of operate time or ±1/4 cycle (whichever is greater)
95% settling time for df/dt:
<24 cycles
Operate time:
typically 9.5 cycles at 2
×
pickup
typically 8.5 cycles at 3
×
pickup
typically 6.5 cycles at 5
×
pickup
Typical times are average operate times including variables such as frequency change instance, test method, and so on, and can vary by
±0.5 cycles.
BREAKER FAILURE
Mode:
1-pole, 3-pole
Current supervision:
phase, neutral current
Current supv. pickup:
0.020 to 30.000 pu in steps of 0.001
Current supv. dropout:
97 to 98% of pickup
Current supv. accuracy:
0.1 to 2.0
×
CT rating:
±0.75% of reading or ±2% of rated (whichever is greater)
above 2
×
CT rating:
±2.5% of reading
BREAKER ARCING CURRENT
Principle:
accumulates breaker duty (I
2
t) and measures fault duration
Initiation:
programmable per phase from any FlexLogic operand
Compensation for auxiliary relays:
0 to 65.535 s in steps of 0.001
Alarm threshold:
0 to 50000 kA
2
-cycle in steps of 1
Fault duration accuracy:
0.25 of a power cycle
Availability:
1 per CT bank with a minimum of 2
INCIPIENT CABLE FAULT DETECTION
Principle:
detection of ½ cycle or less overcurrent condition during normal load
Availability:
two per CT/VT module (not including 8Z modules)
Pickup level:
0.1 to 10.00 pu in steps of 0.01
Reset delay:
0.000 to 65.535 s in steps of 0.001
Operating mode:
number of counts, counts per time window
Содержание L30
Страница 10: ...x L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 14: ...1 4 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 126: ...3 68 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL CONNECT TO D400 GATEWAY CHAPTER 3 INSTALLATION 3 ...
Страница 214: ...4 88 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FLEXLOGIC DESIGN USING ENGINEER CHAPTER 4 INTERFACES 4 ...
Страница 582: ...7 16 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 598: ...9 6 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 9 COMMISSIONING 9 ...
Страница 622: ...10 24 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FAULT LOCATOR CHAPTER 10 THEORY OF OPERATION 10 ...
Страница 670: ...A 18 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 678: ...C 6 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
Страница 682: ...D 4 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL REVISION HISTORY APPENDIX D MISCELLANEOUS D ...
Страница 686: ...iv L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...