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What is lifetime of ATV630/930?

In chapter 8 of ATV630 service instruction there is maintanance program. Here you can find replacement of DC bus capacitors is required after 12 year. The replacement is not cost effective for small size drives. So, we can say this is the lifetime. It is similar toother competitors,  because all drives use electrolitic capacitors and these capacitors are the weakest part of the drives.
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