GU_TRIDENT_V_1_20_EN
18/47
Measuring slow variations:
C O N F I G . P R O G R A M 3 / 7
I n t E g S l o w V a r s 0 1 m n
T h r e s R : + 0 3 % ( 2 3 6 . 9 V )
T h r e s D r : - 0 3 % ( 2 2 3 . 1 V )
Select here the integration period of the slow voltage, current & power variations, and also the
thresholds of swells and sags. High thresholds determine limits over which the slow variations must
not pass, in accordance with the EN50160 standard.
Integration time for means :
This value can be between 1 and 60mn.
TRIDENT can record continuously 28 days of measurements with a 10 mn integration period. If
a longer period is chosen, the autonomy of TRIDENT changes.
Examples :
Period 3mn, TRIDENT records a little over 8 days.
Period 30 mns, TRIDENT records for nearly 3 months.
The TRIDENT memory is “circular”, that is to say that when it is full, the measurement program
continues, but the oldest recordings are replaced by the most recent.
Swells threshold :
ThresholdH
This is entered as a percentage of the nominal voltage. This threshold can be between 3 and 30%
of the nominal voltage.
Sags threshold:
ThresholdCr
This can be between -3 and -80% of the nominal voltage.
When one of the 2 thresholds is modified, the corresponding voltage (simple or line according to
the type of network selected) is displayed for information. If the nominal voltage is superior to
760V , TRIDENT displays voltages in kV.
After having checked the modifications, validate each one and advance to the 4th config. page.
Measurement of voltage faults:
C O N F I G . P R O G R A M 4 / 7
R i s e : + 0 9 % ( 2 5 0 . 7 V )
F a l l : - 0 5 % ( 2 1 8 . 5 V )
I n t e r . : - 8 7 % ( 0 2 9 . 9 V )
Here the quick variation parameters, thresholds of rises, dips and interruptions are configured.
Overvoltage thresholds determine limits over which the rapid variations (instantaneous) should not
pass, in accordance with the norm EN50160.
TRIDENT records up to 1000 faults within the limit of the circular memory: when it is full, the
measurement program continues, but the oldest records are replaced by the most recent.
Otherwise TRIDENT has a fault counter that memorizes the total number of faults detected
independently of the available memory, which enables better appreciation of the state of the
network during the program.
