VAMP 220 - Reading Measured Currents in CURRENT Mode

VAMP 220 / 220R Arc protection system
User manual
VAMP Ltd
46
Vamp 24h support phone : +358 (0)40 573 6316
VM220.EN004
-> 1A
-> 5A
TR1
TR2
TR3
TR4
TR1 -> TR2
TR1 -> TR3
Temp / T R4
All / TR4
Latch
1
2
3
4
5
6
7
8
off o
n
IL1
IL3
I
0
0,01
0,6
0,1
1
2
3
4
5
6
Figure 6.5-1b Setting rated current and start current on VAMP 220R
In CURRENT mode, the set start current value can be read on
the display of the master unit. In addition, the actual values of
the three phase currents (220) / two phase and E/F (220R)
measured by the overcurrent subunit can be read on the
display. To move between the set value and the measured
actual values, use the left and right arrow buttons. See Figure
6.5-2.
NOTE!
The current values read on the display are expressed in units of
the rated current.
For instance, the reading 1.5 means a current of 1.5 x In, i.e.
1.5 x 1 A = 1.5 A or 1.5 x 5 A = 7.5 A depending on the rated
current selected according to the nominal secondary current of
the current transformer.
The setting of the start value of the overcurrent subunit can be
changed even if the master unit is not in the CURRENT mode.
However, it is recommended that the start current is set in the
CURRENT mode, since then the accurate set value can be
viewed on the display during the procedure.