Lsu Block Diagram; Lsu (12-Pulse) Circuit Diagram; Main Components In A 12-Pulse Lsu Cabinet - ABB ACS6000 User Manual

(1) LSU
(2) DC-link
1L1
1L2
1L3
2L1
2L2
2L3
(1) Thyristor crowbar
(2) Diode rectifier
Component
12-pulse diode
rectifier
Snubber circuit
di/dt limiting
reactors
Thyristor crowbar
3BHS212794 E01 REV M
1
Figure 3-6 LSU block diagram
1
1
Figure 3-7 LSU (12-pulse) circuit diagram
Table 3-2 Main components in a 12-pulse LSU cabinet
Description
Limits the rate of the voltage rise (dv/dt) across the
diodes and the crowbar thyristors.
Define the current rise in the thyristor crowbar.
Protection circuit that activates when a short-
circuit occurs. By applying protection firing, the thyristor
crowbar short-circuits the rectifier to prevent further
damage of the drive.
ACS6000 USER MANUAL
03 POWER ELECTRONICS AND CABINET FEATURES
2 3
(3) INU
(4) Motor
2 3
(3) Snubber circuit
(4) di/dt choke
4
4
DC (-)
4
DC (+)
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