Connection Check - CARLO GAVAZZI EM330 Instrucciones De Instalacion Y Uso

Connection check

The analyzer checks whether connections are correct and signals any faults.
The check can be disabled using the Install parameter, see
Initial assumptions
The check is based on some initial assumptions on the system to be measured. Specifically, it is assumed that each
system phase is characterized by:
a load with PF>0.766 (<40°) power factor if inductive or PF>0.996 (<5°) if capacitive
l
current at least equal to 10% rated current (primary current transformer)
l
Controls and signals
Following are the controls in the order in which they are run and corresponding signals:
Control
Voltage order
Voltage and current correspondence. x, y = number of current phases connected to a non
corresponding voltage.
Current direction *. Check phase 1 first, then 2 and lastly 3. x = number of phases involved in
the fault
NOTE *: control only run if the imported and exported energies are measured separately (Measure = b).
8021422 | EM330
"Parameters (Fig. 17)" on page 9.
©2014 | CARLO GAVAZZI Controls SpA| 5
Signal
xy
x