9
Instruction Manual
CIRWATT B 400
munications: with no expansion module or extra features.
2�2 - METROLOGY
The metrological features for the
CIRWATT type B Three-phase
(
TBT
) are:
• The current sensor is of the current transformer type.
• Range of currents:
Table 4: Range of currents�
Range of currents
Version with indirect/semi-indirect connection
Active Class B (1)
I
tr
0.250
I
st
0.010
I
min
0.050
I
n
/ I
ref
5.000
I
max
10.000
Version with direct connection
Active Class B (1)
I
tr
1.000
I
st
0.040
I
min
0.500
I
n
/ I
ref
10.000
I
max
100.000
2�3 - PARAMETERS MEASURED
The meter is able to measure the following parameters:
• Active energy imported, exported and reactive in all four quadrants.
• Active and reactive power.
• Effective voltage and current
• cos
φ
2�4 - NOMINAL, MAXIMUM AND MINIMUM OPERATING CONDITIONS
2�4�1 - ELECTRICAL PARAMETERS
Reference voltage (U
ref
):
3x57/100 V to 3x230/400 V (depending on version)
Operating voltages:
minimum: 80% U
ref
maximum: 120% U
ref
Reference frequency:
50-60Hz
Power absorbed per phase:
< 2 W; <10 VA for Ib, U
ref
(no auxiliary features)
2�4�2 - ENVIRONMENTAL PARAMETERS
Minimum temperature:
-40 ºC
Maximum temperature:
+70 °C; 95% relative humidity (without condensation).