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10 Reforming the capacitors
If the non-operational time has been more than two (graph a) or three (graph b) years,
reform the converter using the method in section
supply
on page
11
or
Reforming time (hours)
6
5
4
3
2
1
1/2
0
0
a) Product series ACS800, ACS850, ACQ810, ACSM1, ACS880-104, ACS380, ACH480 and
ACS480
b) Product series ACH580, ACQ580, ACS580 and ACS880 except ACS880-104
Checking the converter age
The converter serial number defines the week when the converter was manufactured:
•
7 digits: For example, in 3260034, 3 denotes manufacturing year (2003), 26
manufacturing week and 0034 running manufacturing number.
•
8 digits: For example, in 14250125, 1 denotes manufacturing country (1 = Finland), 4
manufacturing year (2004), 25 manufacturing week and 0125 running manufacturing
number.
•
10 digits: For example, in 1173200725, 1 denotes manufacturing country, 17
manufacturing year (2017), 32 manufacturing week and 00725 running manufacturing
number.
Reforming with external diode bridge
a
1
2
Reforming with external DC power
on page 13.
b
3
4
Non-operational time (years)
5
6