GE Power Management
LPS-D Line Protection System
1-
5
1 PRODUCT DESCRIPTION
1.2 INTRODUCTION
1
The Zone 4 variable-mho distance functions can be reversed in direction when a reversed or blocking function
is required. When the POTT2, Blocking or Hybrid scheme is selected, Zone 4 is automatically set to the
reverse direction, because these schemes require a reverse-looking blocking function. The Zone 4 phase and
ground distance functions are provided with independent timers for time delayed backup protection. Revision B
models also have the ability to use Zone 4 ground quadrilateral distance functions for time-delayed backup
protection.
Table 1–2: LPS-D MEASUREMENT FUNCTIONS
Zone or Type
Functions
Zone 1
•
3 Variable-Mho phase distance functions
•
3 Variable-Mho ground distance functions
or
3 Reactance ground distance functions with “adaptive reach” Mho
supervision or 3 Quadrilateral ground distance functions (Revision B
relays only)
Zone 2 (Pilot Zone)
•
3 Variable-Mho phase distance functions
•
3 Variable Mho ground-distance functions
and/or
Ground directional-overcurrent functions consisting of:
IPT: Ground Trip overcurrent
NT: Negative Sequence Directional Trip
IPB: Ground Block overcurrent
NB: Negative Sequence directional block
or
3 Quadrilateral ground distance functions (Revision B relays only)
Zone 3
•
3 Variable-Mho phase-distance functions
•
3 Variable-Mho ground-distance functions, or
3 Quadrilateral ground distance functions (Revision B relays only)
Zone 4
•
3 Reversible variable-Mho phase-distance functions
•
3 Reversible variable-Mho ground-distance functions
Out of Step Blocking (OSB)
3 Variable-Mho phase-distance functions
Overcurrent Backup
50 — Phase-overcurrent direct trip (directional or nondirectional
50G — Ground-overcurrent direct trip (directional or nondirectional)
51G — Ground time-overcurrent direct trip (directional or nondirectional)
Overcurrent Supervision
IT — Trip-supervision overcurrent
IB — Block-supervision overcurrent
Fault Detector
FD
Line-Pickup Overcurrent
I1
Remote-Open Detectors
ROD
Line-Overload Detectors
Level 1 Overcurrent
Level 2 Overcurrent
Содержание LPS-D
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Страница 164: ...3 14 LPS D Line Protection System GE Power Management 3 3 PRINTED CIRCUIT BOARD MODULES 3 HARDWARE DESCRIPTION 3 ...
Страница 226: ...7 4 LPS D Line Protection System GE Power Management 7 1 RATINGS 7 SPECIFICATIONS 7 ...
Страница 284: ...10 20 LPS D Line Protection System GE Power Management 10 8 HELP MENU 10 ALPS TEST PROGRAM 10 ...
Страница 334: ...A 4 LPS D Line Protection System GE Power Management A 1 FREQUENTLY ASKED QUESTIONS APPENDIXA A ...
Страница 412: ...C 34 LPS D Line Protection System GE Power Management C 3 POINT LISTS APPENDIXC C ...
Страница 416: ...D 4 LPS D Line Protection System GE Power Management D 1 KEYPAD MENUS APPENDIXD D ...
Страница 422: ...F 2 LPS D Line Protection System GE Power Management F 1 WARRANTY INFORMATION APPENDIXF F ...
Страница 435: ...GE Power Management LPS D Line Protection System xiii INDEX INDEX tests 6 11 ZONE TIMER functional tests 5 10 ...
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