SINUS PENTA
GUIDE TO THE
REGENERATIVE APPLICATION
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3.9.
External Components of the Regenerative Drive
Figure 7 : External components of the regenerative drive
As shown in Figure 7, some external components must be installed between the regenerative drive and the
mains, to allow for a correct operation of the drive:
1
– BY-PASS CONTACTOR. Three-phase power contactor, used to by-pass the pre-charge resistors. It is
controlled by the MDO3 digital output of the drive (see Menu n.5
– Outputs). For its sizing, refer to the tables
in the following sections:
Cross-section of Power Cables and Size of Safety Components for 2T Class Drives
Cross-section of Power Cables and Size of Safety Components for 4T Class Drives
Cross-section of Power Cables and Size of Safety Components for 5T and 6T Class Drives
The column
“AC1 Class Rated Current of TL1 Pre-charge Contactor” provides the rated current values of the
contactor to be used.
2
– REGENERATIVE REACTOR (L
R
). Three-phase reactor, to be installed between the drive and the
regenerative panel. For the correct type, refer to the following sections:
Regenerative Reactors for 2T Voltage Class
Regenerative Reactors for 4T Voltage Class
Regenerative Reactors for 5T and 6T Voltage Class
3
– FILTER REACTOR (L
F
). Three-phase reactor, to be installed between the regenerative panel and the
mains. Together with the filter capacitors, installed in the interface panel, it acts as a mains filter for the
harmonic component at the switching frequency. For the correct type, refer to the following sections:
Filter Reactors for 2T Voltage Class
Filter Reactors for 4T Voltage Class
Filter Reactors for 5T and 6T Voltage Class
4
– INTERFACE PANEL. The interface panel is a device containing: the pre-charge resistors, the filter
capacitors with the relevant protection breaker, and the mains voltage measurement circuits. For the correct
type, refer to the following sections:
Interface Panel
– 2T Voltage Class
Interface Panel
– 4T Voltage Class
Interface Panel
– 5T and 6T Voltage Class
