Installation After A Period Of Storage; Fig. 2-1 Forming - Siemens MICROMASTER 440 Operating Instructions Manual

Issue 10/03
2.1

Installation after a Period of Storage

Following a prolonged period of storage, you must reform the capacitors in the
inverter.
Frame Sizes A to F
Voltage
[%]
100
75
50
0,5 1
Fig. 2-1 Forming
Frame Sizes FX and GX
Reforming the capacitors can be accomplished by applying 85% of the rated input
voltage for at least 30 minutes without load.
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
Storage period less than 1 year:
Storage period 1 to 2 years:
Storage period 2 to 3 years:
Storage period 3 and more years:
2 4
2 Installation
No action necessary
Prior to energizing, connect to
voltage for one hour
Prior to energizing, form
according to the curve
Prior to energizing, form
according to the curve
Time t [h]
6 8
23