Forming 12.98
6SE7087-7NP87-2DD0 Siemens AG
6-2 Operating Instructions SIMOVERT MASTERDRIVES
♦
Rectifier (A): SKD 62/16
♦
Resistor (R): 470
Ω
, 100 W
♦
Capacitor (C): 22 nF, 1600 V
The unit has hazardous voltage levels up to 5 minutes after it has been
powered down due to the DC link capacitors. The unit or the DC link
terminals must not be worked on until at least after this delay time.
♦
Before you form the DC link capacitors, the unit must be removed or
the front and middle DC link bus module must be taken out.
♦
Connect the required components in accordance with the circuit
example.
♦
Energize the forming circuit. The duration of forming is dependent
on the idle time of the capacitor module.
Off-circuit idle
time in years
Forming time
in hours
12345
1
2
3
4
5
6
Fig. 6-2 Forming time as a function of the capacitor module idle time
Components for the
forming circuit
(suggestion)
WARNING
Procedure
Derating curves
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