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Reforming with power on for 30 minutes

This method can be used for capacitor reforming if the converter has been stocked (non-

operational) for one to two years (product series ACS800, ACS850, ACQ810, ACSM1,

ACS880-104, ACS380, ACH480 and ACS480) or for one to three years (product series

ACH580, ACQ580, ACS580 and ACS880 except ACS880-104).

1. Switch the power on to the converter for 30 minutes.

2. Do not load the converter while the reforming is ongoing.

The converter "wakes up" its capacitors on its own, after which it is ready for use.

This method can be used for capacitor reforming if the converter has been stocked (non-

operational) for two years or longer (product series ACS800, ACS850, ACQ810, ACSM1,

ACS880-104, ACS380, ACH480 and ACS480) or for three years or longer (product series

ACH580, ACQ580, ACS580 and ACS880 except ACS880-104).

WARNING! Obey the safety instructions in section

If you ignore them, injury or death, or damage to the equipment can occur. Never

switch on the converter power supply while the reforming circuit is connected.

Lock the disconnector (if any) to an open position.

1. Make sure that the converter module is disconnected from all possible power sources

(all AC and DC inputs/outputs are disconnected).

2. Measure that the installation is de-energized:

•

Use a multimeter with an impedance of at least 1 Mohm.

•

Make sure that the voltage between the converter input power terminals (U1, V1

and W1) and the grounding terminal (PE) is close to 0 V.

•

Make sure that the voltage between the converter DC terminals (UDC+ and UDC-)

and the grounding terminal (PE) is close to 0 V.

Reforming the capacitors 11

Safety instructions

on page 6.