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5-174
L60 Line Phase Comparison Relay
GE Multilin
5.6 CONTROL ELEMENTS
5 SETTINGS
5
The
PICKUP DELAY
setting should be greater than the operating time of the breaker to avoid nuisance
alarms.
EXAMPLE 2: BREAKER TRIP CIRCUIT INTEGRITY MONITORING
If it is required to monitor the trip circuit continuously, independent of the breaker position (open or closed), a method to
maintain the monitoring current flow through the trip circuit when the breaker is open must be provided (as shown in the fig-
ure below). This can be achieved by connecting a suitable resistor (see figure below) across the auxiliary contact in the trip
circuit. In this case, it is not required to supervise the monitoring circuit with the breaker position – the
BLOCK
setting is
selected to “Off”. In this case, the settings will be:
Figure 5–102: TRIP CIRCUIT EXAMPLE 2
DIGITAL ELEMENT 1
DIGITAL ELEMENT 1
FUNCTION: Enabled
MESSAGE
DIG ELEM 1 NAME:
Bkr Trip Cct Out
MESSAGE
DIG ELEM 1 INPUT:
Cont Op 1 VOff
MESSAGE
DIG ELEM 1 PICKUP
DELAY: 0.200
s
MESSAGE
DIG ELEM 1 RESET
DELAY: 0.100
s
MESSAGE
DIG ELEM 1 BLOCK:
Off
MESSAGE
DIGITAL ELEMENT 1
TARGET: Self-reset
MESSAGE
DIGITAL ELEMENT 1
EVENTS: Enabled
NOTE
Trip
Coil
52a
V
I
H1a
H1c
H1b
UR Relay - Form-A
V = Voltage Monitor
I = Current Monitor
DC+
DC–
827074A2.VSD
R
By-pass
Resistor
Table 5–22: VALUES OF RESISTOR ‘R’
POWER
SUPPLY (V DC)
RESISTANCE
(OHMS)
POWER
(WATTS)
24
1000
2
30
5000
2
48
10000
2
110
25000
5
125
25000
5
250
50000
5
Содержание L60
Страница 2: ......
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Страница 24: ...1 14 L60 Line Phase Comparison Relay GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1...
Страница 42: ...2 18 L60 Line Phase Comparison Relay GE Multilin 2 2 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2...
Страница 78: ...3 36 L60 Line Phase Comparison Relay GE Multilin 3 3 DIRECT INPUT OUTPUT COMMUNICATIONS 3 HARDWARE 3...
Страница 368: ...8 28 L60 Line Phase Comparison Relay GE Multilin 8 2 SINGLE POLE TRIPPING 8 THEORY OF OPERATION 8...
Страница 470: ...D 10 L60 Line Phase Comparison Relay GE Multilin D 1 PROTOCOL APPENDIXD D...
Страница 482: ...E 12 L60 Line Phase Comparison Relay GE Multilin E 2 DNP POINT LISTS APPENDIXE E...
Страница 498: ...x L60 Line Phase Comparison Relay GE Multilin INDEX Z ZERO SEQUENCE CORE BALANCE 3 9...