CHAPTER 2: PRODUCT DESCRIPTION
SIGNAL PROCESSING
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
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2.4 Signal processing
2.4.1 UR signal processing
The UR series relays are microprocessor-based protective relays that are designed to measure power system conditions
directly via CT and PT inputs and via other sources of information, such as analog inputs, communications inputs and
contact inputs. The following figure shows the overall signal processing in URs.
An analog low pass anti-aliasing filter with a 3 dB corner frequency is set at 2.4 kHz and is used for current and voltage
analog filtering as well as signal conditioning. The same filtering is applied for phase, ground currents, phase-to-phase
(when applicable), and auxiliary voltages. The 2.4 kHz cut-off frequency applies to both 50 Hz and 60 Hz applications and
fixed in the hardware, and thus is not dependent on the system nominal frequency setting.
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7E
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Channel 1 - G.703; Channel 2 - 820 nm, multimode
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7F
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Channel 1 - G.703; Channel 2 - 1300 nm, multimode
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7G
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Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED
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7H
|
820 nm, multimode, LED, 2 Channels
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7I
|
1300 nm, multimode, LED, 2 Channels
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7J
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1300 nm, single-mode, ELED, 2 Channels
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7K
|
1300 nm, single-mode, Laser, 2 Channels
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7L
|
Channel 1 - RS422; Channel 2 - 820 nm, multimode, LED
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7M
|
Channel 1 - RS422; Channel 2 - 1300 nm, multimode, LED
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7N
|
Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, ELED
|
7P
|
Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, Laser
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7Q
|
Channel 1 - G.703; Channel 2 - 1300 nm, single-mode Laser
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7R
|
G.703, 1 Channel
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7S
|
G.703, 2 Channels
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7T
|
RS422, 1 Channel
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7W
|
RS422, 2 Channels
TRANSDUCER INPUTS/OUTPUTS
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5A
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4 DCmA inputs, 4 DCmA outputs (only one 5A module is allowed)
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5C
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8 RTD inputs
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5D
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4 RTD inputs, 4 DCmA outputs (only one 5D module is allowed)
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5E
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4 DCmA inputs, 4 RTD inputs
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5F
|
8 DCmA inputs
UR
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Содержание L60
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Страница 464: ...5 334 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 498: ...7 10 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 570: ...10 14 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL DISPOSAL CHAPTER 10 MAINTENANCE 10 ...
Страница 582: ...A 12 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 588: ...C 4 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL REVISION HISTORY APPENDIX C MISCELLANEOUS C ...
Страница 592: ...iv L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...