Monitoring Elements - GE D30 Instruction Manual
Line distance
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Also See for D30:
- Instruction manual (686 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (685 pages)
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5 SETTINGS
a) MAIN MENU
PATH: SETTINGS
CONTROL ELEMENTS
MONITORING
ELEMENTS
MESSAGE
MESSAGE
MESSAGE
b) BREAKER ARCING CURRENT
PATH: SETTINGS
CONTROL ELEMENTS
BREAKER 1
ARCING CURRENT
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
There is one Breaker Arcing Current element available per CT bank, with a minimum of 2 elements. This element calcu-
lates an estimate of the per-phase wear on the breaker contacts by measuring and integrating the current squared passing
through the breaker contacts as an arc. These per-phase values are added to accumulated totals for each phase and com-
pared to a programmed threshold value. When the threshold is exceeded in any phase, the relay can set an output operand
to "1". The accumulated value for each phase can be displayed as an actual value.
The operation of the scheme is shown in the following logic diagram. The same output operand that is selected to operate
the output relay used to trip the breaker, indicating a tripping sequence has begun, is used to initiate this feature. A time
delay is introduced between initiation and the starting of integration to prevent integration of current flow through the
breaker before the contacts have parted. This interval includes the operating time of the output relay, any other auxiliary
relays and the breaker mechanism. For maximum measurement accuracy, the interval between change-of-state of the
operand (from 0 to 1) and contact separation should be measured for the specific installation. Integration of the measured
current continues for 100 ms, which is expected to include the total arcing period.
GE Multilin
MONITORING ELEMENTS
BREAKER 1
ARCING CURRENT
BREAKER 2
ARCING CURRENT
VT FUSE FAILURE 1
VT FUSE FAILURE 2
MONITORING ELEMENTS
BKR 1 ARC AMP
FUNCTION: Disabled
BKR 1 ARC AMP
SOURCE: SRC 1
BKR 1 ARC AMP INT-A:
Off
BKR 1 ARC AMP INT-B:
Off
BKR 1 ARC AMP INT-C:
Off
BKR 1 ARC AMP
DELAY:
0.000 s
BKR 1 ARC AMP LIMIT:
1000 kA2-cyc
BKR 1 ARC AMP BLOCK:
Off
BKR 1 ARC AMP
TARGET: Self-reset
BKR 1 ARC AMP
EVENTS: Disabled
D30 Line Distance Relay
5.6 CONTROL ELEMENTS
5.6.8 MONITORING ELEMENTS
See below.
See below.
See page 5–171.
See page 5–171.
BREAKER 1(2) ARCING CURRENT
Range: Disabled, Enabled
Range: SRC 1, SRC 2
Range: FlexLogic™ operand
Range: FlexLogic™ operand
Range: FlexLogic™ operand
Range: 0.000 to 65.535 s in steps of 0.001
2
Range: 0 to 50000 kA
-cycle in steps of 1
Range: FlexLogic™ operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5
5-169
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