Sprs Connection Diagram - ABB ACS880 Supplement Manual

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SPRS connection diagram

Step down transformer
LCL
FILTER
K4
Component
Inverter (INV)
Converter (ISU)
Transformer
Synchronization unit
.
TR
Synchronisation card
ISU
Function
Connected to rotor winding. Modulates the
amount of power fed back into the power
system and controls motor speed.
Connected to power system.
Matches system voltages.
Uses the zero crossing transformer for
bumpless transfer to
control offers reactive power compensation by
changing the flux length for system power
factor correction, which eliminates the
requirement of capacitor bank.
Operating principle and I/O control 17
HT
isolator
T1 K31
K1
T2
INV
Sine filter
SPRS
HT supply
~
T
M
K2
GRR
and GRR. Q-