GU_TRIDENT_V_1_20_EN
19/47
NOTE :
this memory is completely independent from the memory for the slow variations and can
therefore «rotate » before or after the other. WINTRID will take
this phenomenon into
account for data analysis.
The high threshold can be b3 and +30% of the nominal voltage.
The low threshold can be between -3 and -80% of the nominal voltage.
The interruption threshold (break.) can be between -80 and -95% of the nominal voltage.
The entry interface is similar to that for the slow variations.
After having checked the modifications, validate each one and advance to the 5th config. page.
C O N F I G . C A M P A G N E 5 / 7
T h r e s I b / I l : 0 1 2 . 0 s
T h r e s d u r a t : 0 0 1 0 m s
T h r e s e a r t h : 0 0 5 V
Duration threshold between brief and long interruptions (
Threshold Ib/Il)
: entered in 0,1 second.
TRIDENT sorts interruptions between long and brief according to the threshold that has been
programmed. All interruptions whose length is superior to this threshold will be considered long
and the others brief.
This threshold can range from 0,1 to 999,9 secs.
Minimum fault duration
(Threshold duration)
: entered in milliseconds.
TRIDENT will ignore all faults below this threshold.
This threshold can be between 10 and 9990ms.
Earth/neutral fault
(Threshold earth)
: entered in volts.
Passing this threshold causes the recording of a Rise of Earth voltage.
This threshold can be between 5 and 400V whatever the ratio of transformation of the TPs.
The entry of 000 inhibits the detection of earth/neutral faults and can thus save memory.
After having checked the modifications, validate them and advance to the 6th configuration page.
Frequency measurement :
C O N F I G . P R O G R A M 6 / 7
F r e q u e n c y :
H i g h T h r e s h : 5 3 . 1 H z
L o w T h r e s h : 4 8 . 7 H z
Here the thresholds of variation of the frequency of the network are configured.
TRIDENT measures the frequency continuously and records the time during which the frequency
passes the thresholds in accordance with the norm EN50160.
These times are memorized in the successive weekly totals. For every week of the measurement
program, a counter indicating the time of out-of-limits in seconds is updated, for up to 10 counters.
If the program lasts more than 10 weeks, the last counter is incremented until the end of the
program, thus this ceases to be a weekly counter.
The threshold of frequency rise can be between 50.1 and 55Hz.
The threshold of frequency decrease can be between 45 and 49.9Hz.
The frequency is measured on the phase 1, if V1 > 10V.
After having checked the modifications, validate each one and advance to the 7th config. page.
