L21, Unit Fan For Single-Phase Connection; L85, 85 A Field Power Unit - Siemens SINAMICS DCM Betriebsanleitung

Options
11.1 SINAMICS DCM DC Converter
11.1.8

L21, unit fan for single-phase connection

Category
SINAMICS DCM DC Converter
Function
Converter units from 400 A up to and including 1200 A rated DC current can, using this
option, be equipped with a fan for connection to a single-phase supply. This is supplied from
the internally generated 230 V AC control voltage, and from a circuit perspective, is treated
in exactly the same way as a standard fan. Cabinet fans, which are installed in the converter
cabinet in order to implement higher degrees of protection, are not affected by the option.
The fans are protected using an integrated overtemperature protection function.
Connection
Is connected up in the manufacturer's factory.
11.1.9

L85, 85 A field power unit

Category
SINAMICS DCM DC Converter
Function
All components in the field circuit and the field power unit in the SINAMICS DCM DC
Converter are dimensioned for a rated current of 85 A (possible for units with a rated DC
current, armature ≥ 1500 A; also in conjunction with option L11 (2Q field power unit)). With
option L85, the maximum connection cross-section of the auxiliary supply is increased up to
50 mm
protection (fusing) on the customer side is 125 A.
Connection
The connection is made to the terminal strip for the field output -X3.1 and -X3.2. For details,
see the operating instructions for the SINAMICS DCM Cabinet, Chapter Connecting the
motor and power cables (Page 81).
202
and for the DC output to the field, up to 35 mm
2
. The maximum permissible
2
Operating Instructions, 04/2015, A5E36161239/RS-AA/001
SINAMICS DCM Cabinet