Onl
Only line
y line-t
-to-line v
o-line volta
oltages a
ges avvailable
ailable
If the line-to-line voltages are measured but the zero sequence voltage is not measured or is not
otherwise known, the three-phase power calculation is based on Aron’s theorem:
Both cos(φ) and tan(φ) are calculated in the same way as in the line-to-neutral mode.
Troubleshooting
Check the "Troubleshooting" section in chapters “Current measurement and scaling” and “Voltage
measurement and scaling” for more information. Most power and energy measurement problems are
usually related to the same issues (i.e. wiring errors, wrong measurement modes, faulty frequency
settings, etc.).
Settings
Table. 5.2.3 - 36. Power and energy measurement settings
Name
Range
Step
Default
Description
3ph active
energy
measurement
0: Disabled
1: Enabled
-
0:
Disabled
Enables/disables the active energy measurement.
3ph reactive
energy
measurement
0: Disabled
1: Enabled
-
0:
Disabled
Enables/disables the reactive and apparent energy
measurement.
3ph energy
megas or kilos
0: Mega
1: Kilo
-
0: Mega
Defines whether energy is measured with the prefix 'kilo'
(10
3
) or 'mega' (10
6
).
Edit energy
values
0: Disabled
1: Enabled
-
0:
Disabled
When this parameter is enabled it is possible to manually
edit exported and imported active energy values.
NOTE: "E 3ph M or k" parameter has to be set to "kilo" for
this feature to function.
Invert imp/exp
energy
directions
0: Not inverted
1: Inverted
-
0: Not
inverted
Inverts the direction of imported and exported energy
without affecting the direction of power calculation.
Nominal power
kVA
0.10...500000.00kVA 0.01kVA 100kVA
Defines the nominal power of the protected object.
A
AQ
Q-T215
-T215
Instruction manual
Version: 2.04
80
