System
voltage angle
UL1
("System volt
UL1 ang")
0.00…
360.0
deg
0.01
deg
The primary line-to-neutral angle UL1 (measured or calculated).
System
voltage angle
UL2
("System volt
UL2 ang")
0.00…
360.0
deg
0.01
deg
The primary line-to-neutral angle UL2 (measured or calculated).
System
voltage angle
UL3
("System volt
UL3 ang")
0.00…
360.0
deg
0.01
deg
The primary line-to-neutral angle UL3 (measured or calculated).
System
voltage angle
U0
("System volt
U0 ang")
0.00…
360.0
deg
0.01
deg
The primary zero sequence angle U0 (measured or calculated).
System
voltage angle
U3
("System volt
U3 ang")
0.00…
360.0
deg
0.01
deg
The primary measured Synchrocheck angle SS. This magnitude is only valid when the
"2LL+U3+U4" mode is selected and both U3 and U4 are in use.
System
voltage angle
U4
("System volt
U4 ang")
0.00…
360.0
deg
0.01
deg
The primary measured Synchrocheck angle SS. This magnitude is displayed only when
the "2LL+U3+U4" mode is selected and both U3 and U4 are in use.
Table. 5.2.2. - 34. Harmonic voltage measurements.
Name
Range
Step Default
Description
Harmonics
calculation values
("Harm Abs.or Perc.")
0: Percent
1: Absolute
-
0:
Percent
De nes whether the harmonics are calculated as percentages or
absolute values.
Harmonics display
0: Per unit
1: Primary V
2:
Secondary
V
-
0: Per
unit
De nes how the harmonics are displayed: in p.u. values, as primary
voltage values, or as secondary voltage values.
Maximum harmonics
value
("UxMaxH")
0.00…100
000.00 V
0.01
V
-
Displays the maximum harmonics value of the selected voltage input
Ux.
Fundamental
frequency
("Ux Fund")
0.00…100
000.00 V
0.01
V
-
Displays the voltage value of the fundamental frequency from the
selected voltage input Ux.
Ux harmonics
(2
nd
...31
st
harmonic)
0.00...100
000.00 V
0.01
V
-
Displays the selected harmonic from the voltage input Ux.
5.2.3. Power and energy calculation
The relays that are equipped with both a voltage and a current card can calculate power, and can
therefore have power-based protection and monitoring functions (the number of available functions
depends of the relay type). In addition to power calculations, energy magnitudes are also calculated.
Power is divided into three magnitudes: apparent power (S), active power (P) and reactive power (Q).
Energy measurement calculates magnitudes for active and reactive energy. Energy can flow to the
forward direction (exported) or to the reverse direction (imported).
If a unit has more than one CT measurement module, the user can choose which module's current
measurement is used by the power calculation.
AQ-E215
Instruction manual
Version: 2.01
57
© Arcteq Relays Ltd