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Prophi
6T
®
2.1 Current measurement
When installing the current converter, care should be taken to ensure that the load
current flows through it. The outputs of the compensation network must be installed
behind the current converter (in the direction of current flow). If the device is connected
up via sum-current converters, the overall conversion ratio is entered.
Example:
C.converter 1: 1000/5A
C.converter 2: 1000/5A
Sum-current converter: 5A+5A/5A
C.converter ratio is: 2000/5A
2.2 Programming of phase-correction - e.g. connection directly L-L (400V)
Adjustment of phase-correction between voltage and current in the meas. system is done
in expert mode 1 (page 14)
Example:
Meas.current: L1
Meas. Voltage L3-L2
Phase U/I [ 90°]
using
preset
example
6
L 1 ( R )
L 2 ( S )
L 3 ( T )
N
P E
(L)
Ub
meas. current
meas. voltage
L1
L1 - N
L1
L1 - L2
L1 (k<->l)
L2 - N
L1
L3 - L2
L1
L3 - N
L1
L3 - L1
L1 (k<->l)
L1 - N
L1 (k<->l)
L1 - L2
L1
L2 - N
L1
L2 - L3
L1 (k<->l)
L3 - N
L1 (k<->l)
L3 - L1
- 5 -
Measurement via sum current converter
Feed 1
K
k
L
l
K
k
k
Current
measurement
Prophi-6T
k
(N)
(L3)
(L2)
k
Um
Im
Feed 2
k
K
l
L
L
K
L
l
l
l
l
phase-angle
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
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