related side effects (conductor overload, circuit breakers and machines, phase unbalances,
interferences in electronic units, RCCB trips, etc.).
The level of harmonics is usually measured with the total harmonic distortion rate (THD), which
is the ratio, usually as a %, of the RMS value of the harmonic content and the value of the fun-
damental component.
4.2.- MEASUREMENT PARAMETERS
The unit displays the following electrical parameters:
4�2�1� CONNECTION TYPE: 3U.3C
Table 3: Controller MASTER control VAR FAST measurement parameters (3U.3C connection)
Parameter Units Phases
L1-L2-L3
N
Total
III
Max
(1)
Min
(2)
Phase-neutral voltage V
Phase-phase voltage V
Current A
Leakage current mA
Frequency Hz
(L1)
Active Power M/kW
Apparent Power M/kVA
Total Reactive Power M/kvar
Inductive Reactive Power M/kvarL
Capacitive Reactive Power M/kvarC
Power factor PF
Cos φ φ
Voltage THD % % THD V
Current THD % % THD A
Harmonic Breakdown - Voltage
(up to the 17th harmonic)
harm V
Harmonic Breakdown - Current
(up to the 17th harmonic)
harm A
Active energy M/kWh
Inductive Reactive Energy M/kvarLh
Capacitive Reactive Energy M/kvarCh
Apparent energy M/kVAh
Temperature ºC
No. of operations x1000
Total activated power %
(1)
Displays the maximum value.
(2)
Displays the minimum value.
25