Rev.01
75/151
8.9.1
Circuit Breaker opening and closing commands
The circuit breaker opening and closing commands are implemented. These commands can be
executed from the HMI commands menu or using the HMI’s specific keypad or from local or remote
communications.
To execute the commands from remote communications it is necessary to execute the Remote
Command, with this action, the Local Control bit is deactivated and the remote actions are allowed.
Please, note that commands executed from HMI commands menu, HMI specific keys or Local
Communication will be always executed, regardless the status of the bit ‘Local Control’.
For the commands to have an effect, they should be assigned to the corresponding outputs. By default,
the "Open circuit breaker" and "Close circuit breaker" bits are assigned to their corresponding outputs
in the "PGC" states group in the ‘STATES’ menu.
8.9.2
‘Openings Number’ counter.
SILG relay has a counter which records the number of openings of circuit breaker.
This counter has associated the setting ‘Maximum number of openings’
. When number of openings is
higher than adjusted value the state “Number of openings” is activated and associated event is created.
The value of this counter can be initialized to any value inside the range, by HMI or by communications,
in case of installing this protection with a circuit breaker which was already working.
8.9.3
‘Accumulated amperes: I
2
t’ counter
There is also an ‘Accumulated amperes’ counter. This counter accumulates broken am
peres by circuit
breaker with its openings.
When a circuit breaker opening happens the maximum of primary amperes are detected in any phase.
If detected current is lower than nominal current, nominal current is used to calculate the accumulation.
It is
used with “Openings Number” counter, as an estimation of aging of circuit breaker.
As primary amperes are accumulated, is indispensable to set correctly the CT’s ratio of the phases.
Associated with this counter, there is a setting called ‘Maximum accumulated amperes’. When
accumulated amperes are higher than adjusted value, state ‘Accumulated amperes’ is activated and
associated event is created.
The value of this counter can be initialized to any value inside the range, by HMI or by communications,
in case of installing this protection with a circuit breaker which was already working.
8.9.4
Maximum openings in a time frame
As well as counting the number of times the circuit breaker opens, the SIL-G equipment sets up a time
frame and the maximum number of openings allowed during this time. Both parameters can be adjusted.
It works like a time accumulator, to be active it needs to detect openings within the range defined by
these two settings.
When this number is exceeded, the ‘Openings/Time Alarm’ status is activ
ated, and its corresponding
event is generated.
Summary of Contents for SIL-G
Page 1: ...USER S MANUAL USER S MANUAL SIL G Feeder Relay...
Page 8: ...www fanox com Rev 01 8 151 2 3 Connection diagrams 2 3 1 Analog current connections...
Page 10: ...www fanox com Rev 01 10 151 3 VT configuration phase neutral...
Page 11: ...www fanox com Rev 01 11 151 3 VT configuration phase neutral residual voltage...
Page 12: ...www fanox com Rev 01 12 151 3VT configuration phase phase residual voltage...
Page 13: ...www fanox com Rev 01 13 151 2VT configuration phase phase residual voltage...
Page 14: ...www fanox com Rev 01 14 151 3 VT configuration phase neutral phase B line voltage...
Page 27: ...www fanox com Rev 01 27 151 Dimensions 175x175x150 3 3 Functional diagram...
Page 28: ...www fanox com Rev 01 28 151...
Page 69: ...www fanox com Rev 01 69 151 General trip...
Page 88: ...www fanox com Rev 01 88 151...
Page 89: ...www fanox com Rev 01 89 151...
Page 90: ...www fanox com Rev 01 90 151...
Page 95: ...www fanox com Rev 01 95 151 Time Minutes Seconds Milliseconds...
Page 150: ...www fanox com Rev 01 150 151 NOTES...
Page 151: ...www fanox com Rev 01 151 151...
