Rev.01
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These two parameters have the following meaning:
•
No Load Time
: If the circuit has been open for less time than the setting, the Cold Load Pickup
function is not in working conditions.
•
Cold Load Time
: If the Cold load Pickup function is in working conditions, after the circuit has
been closed, during this time the new setting group is applied. After this time, the relay returns
to the adjusted setting group.
The function operates according to the following automaton. The automaton consists of five states, in
three of those states the relay works with normal setting group (the group adjusted in general settings),
and in the other two, with the new settings group.
The relay uses the current level to determine the circuit breaker state (open or closed). If the current is
less than 0.8% of the rated level, it is understood that the line is open, with an extremely low usage level
(operating at night, or on weekends). In one case or the other Cold Load is in working condition.
The relay usually operates with the settings in their active group. When the circuit breaker opens, a timer
‘No Load Time’ starts. After this time, the relay considers that the circuit breaker is open, so the CLP
function is in working conditions.
Once the circuit breaker is closed, CLP function picks-
up and ‘Cold load time’ starts to count. During
this time the relay will work with the new setting group regardless of the circuit breaker situation, this is,
without taking into account whether the circuit breaker is maintained closed or is open.
When the setting group changed occurs, not all the protection functions change, only 50, 50/51, 50N/G,
50/51N/G and 46 functions are modified to new settings.
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...
