74
Checking the power measurement
Short-circuit all current converter outputs ex-
cept one and check the displayed power out-
puts.
The EM-PQ2500 may only display one power
output in the phase with the current converter
input that is not short-circuited. If this does not
apply, please check the connection of the mea-
surement voltage and measurement current.
If the amount of effective power is correct but
the sign of effective power is negative, this may
have two causes:
•
Connections S1(k) and S2(l) are mixed up on
the current converter.
•
Effective power is returned to the network.
Initialization
In the pointer diagram, voltages are shown with
the longer pointers and currents with shorter
pointers.
