VAMP 150 - Page 34

VAMP 150 Motor protection relay
Technical Description
VAMP Ltd
6
Vamp 24h support phone : +358 (0)20 753 3264 VM150.EN005
Figure 2.1-1. Principle block diagram of a numerical protection relay.
Im
Um
I
U
16samples/cycle
16samples/cycle
Digital
inputs
Settings
Amplitudeand
phaseshiftof
basefreqency
component
FFT calculation
Calculationof
symmetric
components
Protection
functions
Trip
start
Block
Blockmatrix
Outputmatrix
Outputrelay
control
1
k212_16
Figure 2.1-2. Block diagram of a signal processing and protection software.
Figure 2.1-3. Block diagram of a basic protection function.