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Hello,
Recently our company acquired an (older) power-plant. It turns out that the former owners had an extensive automated installation based on 110VDC. Just months before the take-over they changed most of their installation from 110VDC to 24VDC. Now all the contacts(level-switches, pressure-switches,valve-positionners,...) which previously for the past 20years were wired into 110VDC-circuits, are now wired into 24VDC-inputcircuits for a mainframe.
I expect that contacts that have been used for many years at 110VDC may have a certain amount of burn-in, making their usage at 24VDC a problem. Some people at the company advise me to change them all to gold-plated contacts ?!
Who has experience in these matters ?
Recently our company acquired an (older) power-plant. It turns out that the former owners had an extensive automated installation based on 110VDC. Just months before the take-over they changed most of their installation from 110VDC to 24VDC. Now all the contacts(level-switches, pressure-switches,valve-positionners,...) which previously for the past 20years were wired into 110VDC-circuits, are now wired into 24VDC-inputcircuits for a mainframe.
I expect that contacts that have been used for many years at 110VDC may have a certain amount of burn-in, making their usage at 24VDC a problem. Some people at the company advise me to change them all to gold-plated contacts ?!
Who has experience in these matters ?