VAMP 260 - Ma Scaling Examples

VAMP Ltd Power monitoring unit
Technical description
VAMP 260
VM260.EN004 Vamp 24h support phone : +358 (0)20 753 3264
31
Connections:
• X2: 1 AO1+ X2: 2 AO1-
• X2: 3 AO2+ X2: 4 AO2-
• X2: 5 AO3+ X2: 6 AO3-
• X2: 7 AO4+ X2: 8 AO4-
Note!
All positive poles (X2:1, -3, -5 and -7) are internally connected
together.
4.5.1. mA scaling examples
In this chapter, there are three example configurations of
scaling the transducer (mA) outputs.
Example 1
Coupling = IL
Scaled minimum = 0 A
Scaled maximum = 300 A
Analogue output minimum value = 0 mA
Analogue output maximum value = 20 mA
IL
(A)
(mA)
Analogue
output
4
8
12
16
20
300
mAScaling_1
Figure 4.5.1-1. Example of mA scaling for IL, average of the three phase
currents. At 0 A the transducer ouput is 0 mA, at 300 A the output is 20 mA