Instructions

33
Instruction Manual
MYeBOX 150 - MYeBOX 1500
Table 11 (Continued): MYeBOX measurement parameters�
Parameter Units Tariff: T1-T2
No. of hours of active tariff
(12)
hours

Cost
(12)
COST

CO
2
Emissions
(12)
kgCO
2

(12)
Parameters shown on the device's display.
4�2�1�- QUALITY PARAMETERS
Power quality control requires dening the TRMS of the voltage level, subsequently used by
the analyzer to record events. According to Standard EN-61000-4-30, the RMS value must be
calculated for all the AC magnitudes or each cycle and refresh every ½ cycle. If the RMS value
exceeds certain programmed thresholds, this is understood as an event�
The device detects quality parameters such as overvoltages, gaps, voltage outages and tran-
sients. Figure 28 shows an example of these events.
Figure 28:Example of quality events�
 Overvoltage
An overvoltage event is shown in the time interval t0 in Figure 28 . The duration of the event
is the time that the signal stays above the congured threshold value (“6.3.1.- OVERVOLTAGE,
SWELL”). In this example it is 110% of the rated voltage plus the time the signal takes to fall
below the congured value, including a hysteresis of 2%.
 Voltage gap
In the time intervals t1 and t3 of Figure 28 there are two voltage gaps. The duration of the event
is the time that the signal stays below the congured threshold value (“6.3.2.- GAP, SAG”). In this
example it is 90% of the rated voltage.
 Voltage outage
An outage or disruption event is shown in the time interval t2 in Figure 28 . The duration of the
event is the time that the signal stays below the congured threshold value (“6.3.3.- OUTAGE,
DISRUPTION”). In this example it is 10% of the rated voltage plus the time the signal takes to
rise above the congured value, including a hysteresis of 2%.