Measurements and settings
62
TemBreak
PRO
P_SE-UM-001-EN
– V1.2.0
Demand Values (averaged values over an interval)
The P_SE OCR calculates the averaged current and power values by integration over a specified time interval. These are the Demand values or the
averaged values over an interval. Demand values are useful in order to create a load profile for the loads supplied by the P_SE MCCB.
Demand values are distinct and not to be confused with other instantaneous average measurements (e.g. I
avg
, U
avg
etc.), which are given as arithmetic
averages of several phases.
The P_SE OCR calculates an average demand value (G) by adding all the values for G for a time interval (T) and dividing them by the total time in the
window interval. The formula is represented by an integral continuous over time, though the OCR does perform this calculation using discrete time and
measurement values.
G
average
=
1
T
∫
Gdt
T
0
Where:
T = Time window interval
G = Demand value over time interval
For each averaged value (Demand value) period calculated, the maximum value over the time interval is also stored. The maximum values can be reset via
the TPED or TPCM.
The exhaustive list of variables calculated according to system topology (3Ph and 3Ph+N) and the display interface are given in the following table:
Electrical Variable
Symbol
3Ph
3Ph+N
TPED
TPCM
Phase currents
I
1 Dmd
, I
2 Dmd
, I
3 Dmd
✓
✓
─
✓
Neutral current (*4P MCCB only)
*I
N Dmd
─
✓
*
─
✓
Average current
I
avg Dmd
✓
✓
─
✓
Active power per phase
P
1 Dmd
, P
2 DMD
, P
3 Dmd
─
✓
✓
✓
Total active power
P
tot Dmd
✓
✓
✓
✓
Reactive power per phase
Q
1 Dmd
, Q
2 Dmd
, Q
3 Dmd
─
✓
✓
✓
Total reactive power
Q
tot Dmd
✓
✓
✓
✓
Apparent power per phase
S
1 Dmd
, S
2 Dmd
, S
3 Dmd
─
✓
✓
✓
Total apparent power
S
tot Dmd
✓
✓
✓
✓
Maximum current phase
I
1 max Dmd
, I
2 max Dmd
, I
3 max Dmd
✓
✓
─
✓
Neutral current maximum (*4P MCCB only)
*I
N max Dmd
─
✓
*
─
✓
Average current maximum
I
avg max Dmd
✓
✓
─
✓
Maximum active power per phase
P
1 max Dmd
, P
2 max Dmd
, P
3 max Dmd
─
✓
✓
✓
Maximum total active power
P
tot max Dmd
✓
✓
✓
✓
Maximum reactive power per phase
Q
1 max Dmd
, Q
2 max Dmd
, Q
3 max Dmd
─
✓
✓
✓
Maximum total reactive power
Q
tot max Dmd
✓
✓
✓
✓
Maximum apparent power per phase
S
1 max Dmd
, S
2 max Dmd
, S
3 max Dmd
─
✓
✓
✓
Maximum total apparent power
S
tot max Dmd
✓
✓
✓
✓
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
Summary of Contents for Terasaki TemBreak PRO P SE Series
Page 106: ...106 TemBreak PRO P_SE UM 001 EN V1 2 0 Annex A Dimensions P160 Dimensions...
Page 107: ...Annex A Dimensions 107 TemBreak PRO P_SE UM 001 EN V1 2 0 P250 Dimensions...
Page 108: ...Annex A Dimensions 108 TemBreak PRO P_SE UM 001 EN V1 2 0 P400 Dimensions...
Page 109: ...Annex A Dimensions 109 TemBreak PRO P_SE UM 001 EN V1 2 0 P630 Dimensions...
Page 111: ...111 TemBreak PRO P_SE UM 001 EN V1 2 0 Annex C I2t Let Through Curves P160_SE...
Page 112: ...Annex C I2t Let Through Curves 112 TemBreak PRO P_SE UM 001 EN V1 2 0 P250_SE...
Page 113: ...Annex C I2t Let Through Curves 113 TemBreak PRO P_SE UM 001 EN V1 2 0 P400_SE...
Page 114: ...Annex C I2t Let Through Curves 114 TemBreak PRO P_SE UM 001 EN V1 2 0 P630_SE...
Page 115: ...115 TemBreak PRO P_SE UM 001 EN V1 2 0 Annex D Peak Let Through Curves P160_SE...
Page 116: ...116 TemBreak PRO P_SE UM 001 EN V1 2 0 P250_SE...
Page 117: ...117 TemBreak PRO P_SE UM 001 EN V1 2 0 P400_SE...
Page 118: ...118 TemBreak PRO P_SE UM 001 EN V1 2 0 P630_SE...
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