Siemens SENTRON PAC3100, Manual, Page: 21 / 152

Description
3.3 Measured variables
SENTRON PAC3100
Manual, 07/2009, A5E02385159B-01
21
3.3 Measured variables
Measured variables – overview
The table below lists all measured variables that the device records or derives from basic
variables.
Table 3- 4 Measured variables
Measured variable Abbreviation Instantan
eous
value
Min Max Mean
value
Total
value
Unit
Voltage ph-n V
a-n
/ V
b-n
/ V
c-n
✓ ✓ ✓ [V]
Voltage ph-ph V
a-b
/ V
b-c
/ V
c-a
✓ ✓ ✓ [V]
Current I
a
/ I
b
/ I
c
✓ ✓ ✓ [A]
Neutral current I
N
✓ ✓ ✓ [A]
Apparent power per phase VA
a
/ VA
b
/ VA
c
✓ ✓ ✓ [VA]
Active power per phase
import/export
W
a
/ W
b
/ W
c
✓ ✓ ✓ [W]
Reactive power (VAR1) per
phase positive / negative
VAR
1 a
/ VAR
1 b
/
VAR
1 c
✓ ✓ ✓ [VAR]
Total apparent power over all
phases
VA ✓ ✓ ✓ [VA]
Total active power over all
phases import / export
P ✓ ✓ ✓ ✓
1)
[W]
Total reactive power VAR1
over all phases positive /
negative
Q
1
✓ ✓ ✓ ✓
1)
[VAR]
Total power factor PF ✓ ✓ ✓
Line frequency f ✓ ✓ ✓ [Hz]
Active energy
import/export/balance
E
a
✓ [Wh]
Reactive energy
import/export/balance
E
r
✓ [VARh]
1) Power demand of the last completed period for import and export, as well as minimum and maximum instantaneous
value. Can only be called via RS 485 interface. See the chapter "Power demand".
See also
Measured variables (Page 119)
Power demands and counters (Page 22)