Data Sheet

8
Carlo Gavazzi Controls S.p.A.
EM530
EM530 DS ENG07/07/2021
Electrical variable Unit System Phase
Voltage L-N V ● ●
Voltage L-L V ● ●
Current A ● ●
DMD A - ●
DMD MAX A - ●
Neutral current A ● -
Active power W ● ●
DMD W ● -
DMD MAX W ● -
Apparent power VA ● ●
DMD VA ● -
DMD MAX VA ● -
Reactive power Var ● ●
Power factor PF ● ●
Frequency Hz ● -
THD Current* THD A % - ●
THD Voltage L-N* THD L-N % - ●
THD Voltage L-L* THD L-L % - ●
* Up to 15
th
harmonic
NOTE: the available variables depend on the type of system set.
Total imported active energy (kWh TOT) is the only MID certied meter. Apparent energy, reactive energy and
exported active energy are not MID certied. Partial meters are not MID certied.
All the variables calculated by the meter are referred to the primary current of the current transformer.
Energy metering
Energy metering depends on the measurement type you chose (selectable in non-MID models, according to
the model in MID-certied models).
A measurement (MID PFA models)
Easy connection function: irrespective of the current direction, the power always has a plus sign and contributes
to increase the positive energy meter. The negative energy meter is not available.
B measurement (MID PFB models)
For each measuring time interval, the individual phase energies with a plus sign are summed to increase the
positive energy meter (kWh+), while the others increase the negative one (kWh-).
Example:
P L1= +2 kW, P L2= +2 kW, P L3= -3 kW
Integration time = 1 hour
kWh+ = (2+2) x1h = 4 kWh
kWh- = 3 x 1h= 3kWh
C measurement (MID PFC models)
For every measuring interval time, the energies of the single phases are summed; according to the sign of the
result, the positive (kWh+) or negative totalizer (kWh-) is increased.
Example:
P L1= +2 kW, P L2= +2 kW, P L3= -3 kW