NHP Terasaki TemBreak PRO P SE Series, User Manual

Page: 56 / 122

Measurements and settings
56
TemBreak PRO
P_SE-UM-001-EN
– V1.2.0
Power Related Measurements
The P_SE OCR calculates the electrical power related parameters in real-time by taking discrete instantaneous measurements of voltage and current at
regular sample intervals, with the available data refreshed once every second:
-
Active power (P)
-
Reactive power (Q)
-
Apparent power (S)
-
Power Factor (PF)
-
Fundamental power factor (Cosφ)
-
Power sign
-
Power quadrant
Active, Reactive, Apparent power
Active (P), Reactive (Q) and Apparent (S) Power related parameters vary in availability according to system topology (3Ph or 3Ph+N), which are provided in
the following table. Individual power values per phase are only available on MCCB variants with a Neutral reference, whereas total 3-phase power values
are available for both system topologies.
Electrical Parameter Symbol
3Ph 3Ph+N
Active power per phase
P
1
, P
2
, P
3
─
✓
Apparent power per phase
S
1
, S
2
, S
3
─
✓
Reactive power per phase
Q
1
, Q
2
, Q
3
─
✓
Total 3-phase active power P
tot
✓ ✓
Total 3-phase reactive power
Q
tot
✓ ✓
Total 3-phase apparent power
S
tot
✓ ✓
Notice : Accuracy and correct polarity of power related measurements are dependent on several calculation,
power flow and sign convention settings. Refer to the respective sections for details on these settings:
Power flow direction and quadrant
Reactive and apparent power calculation convention
Power factor sign convention