ABB ACA 6 Series - Page 98

Chapter 6 – Preventive Maintenance
6-4 ACS 600 MultiDrive
Method 2 A Capacitor reforming is realised by connecting a rectifier and a resistor
circuit to the converter DC link. The reforming circuit and component
values for different voltages are given below. See Figure 6-1 for the
reforming time.
WARNING! The converter supply must be disconnected while the
reforming circuit is connected.
Supply Voltage Recommended Components
AR C
380 V < U
1
< 415 V SKD 82/16 220 Ohm / 700 W 22 nF / 2000 V
380 V < U
1
< 500 V SKD 82/16 470 Ohm / 1200 W 22 nF / 2000 V
525 V < U
1
< 690 V SKD 82/16 680 Ohm / 1700 W 22 nF / 2000 V
L–
L+
R
A
C
U
1
1.35 ×U
1
Converter
or phase module
W2 (W1)
U2 (U1)
V2 (V1)
Disconnect