Megger SVERKER 900, Техническое руководство

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Technical Guide
Testing self-powered relays with SVERKER 900
Page 3(33)
1. INTRODUCTION TO THIS TECHNICAL GUIDE. .................................................................................................. 4
2. ABOUT SELF-POWERED RELAYS: PAST AND FUTURE. ................................................................................. 4
3. GENERAL TOPICS RELATED TO TESTING SELF-POWERED RELAYS. ........................................................ 4
3.1. D
IRECT SECONDARY INJECTION OR INJECTION THROUGH TEST CIRCUITS
.............................................................................. 4
3.2. P
RE
-
FAULT QUANTITIES
................................................................................................................................................................. 6
3.3. SVERKER 900
AND SELF
-
POWERED RELAYS
........................................................................................................................... 6
4. GENERAL INFORMATION ABOUT OVERCURRENT RELAYS. ........................................................................ 7
4.1. IEC
STANDARD FOR OVERCURRENT PROTECTION
: IEC 60255-151:2009 ........................................................................ 7
4.1.1. Standardized IEC inverse time curves ........................................................................................................................ 7
4.1.2. The “Time Multiplier”, TMS. ........................................................................................................................................... 8
4.1.3. Testing the start value and the operate time. ......................................................................................................... 8
5. TESTING WIC-1 OVERCURRENT RELAY WITH SVERKER 900. ................................................................ 10
5.1. I
NTRODUCTION
............................................................................................................................................................................. 10
5.2. T
ESTING THE PHASE OVERCURRENT RELAY
. ............................................................................................................................ 12
5.2.1. Relay settings. .................................................................................................................................................................... 12
5.2.2. Connecting SVERKER 900 to WIC-1 relay. ............................................................................................................. 13
5.2.3. SVERKER 900 settings. ................................................................................................................................................... 14
5.2.4. Testing the overcurrent protection function. ........................................................................................................ 15
5.2.5. Can we accept the test results? ................................................................................................................................... 19
5.3. T
ESTING THE PROTECTION FUNCTION WITHOUT PRE
-
FAULT
(
SWITCH ONTO FAULT
). .................................................... 20
6. TESTING WIP-1 OVERCURRENT RELAY WITH SVERKER 900. ................................................................ 23
6.1. I
NTRODUCTION
............................................................................................................................................................................. 23
6.2. T
ESTING THE PHASE OVERCURRENT RELAY
. ............................................................................................................................ 23
6.2.1. Relay settings. .................................................................................................................................................................... 23
6.2.2. Connecting SVERKER 900 to WIP-1 relay. ............................................................................................................. 24
6.2.3. SVERKER 900 settings. ................................................................................................................................................... 25
6.2.4. Testing the overcurrent protection function. ........................................................................................................ 26
6.3. T
ESTING THE TRIPPING CIRCUITS OF
WIP-1 (
SELF
-
TEST
). .................................................................................................. 28
6.4. T
ESTING THE PROTECTION FUNCTION WITHOUT PRE
-
FAULT
(
SWITCH ONTO FAULT
). .................................................... 29
7. ACKNOWLEDGMENT .............................................................................................................................................. 31
8. ABOUT THE AUTHORS ........................................................................................................................................... 32
8.1. A
NDREA
B
ONETTI
........................................................................................................................................................................ 32
8.2. K
LAUS
S
PITZENBERG
................................................................................................................................................................... 32
8.3. L
ENNART
S
CHOTTENIUS
.............................................................................................................................................................. 32
8.4. S
TEFAN
L
ARSSON
......................................................................................................................................................................... 32
9. REVISIONS. ................................................................................................................................................................. 32
9.1. R
EVISION
1. ................................................................................................................................................................................... 32
10. REFERENCES .............................................................................................................................................................. 33