nullsig
Member
- Location
- Louisville KY
I work at an industrial facility and we are replacing ~20 year old UPS systems that provide power to critical process control equipment, network racks, and servers.
Currently these systems/loads are not on an isolated ground but the question was raised as to if we should implement an isolated ground when replacing the old UPSs.
Is there a convention or recommendation for when isolated ground is appropriate? As I said before, these systems have been in for ~20 years and we haven't had any grounding or noise related issues to date. However, I feel newer electronic systems are becoming more sensitive so it is prudent to address the issue.
Some of these loads are "dual sourced"- they have ATSs with normal power and UPS power inputs, or particular equipment might actually have two separate power inputs/power supplies for UPS and normal. Are there any consequences or considerations for dual fed loads when one of the sources is on isolated ground and the other is not?
Currently these systems/loads are not on an isolated ground but the question was raised as to if we should implement an isolated ground when replacing the old UPSs.
Is there a convention or recommendation for when isolated ground is appropriate? As I said before, these systems have been in for ~20 years and we haven't had any grounding or noise related issues to date. However, I feel newer electronic systems are becoming more sensitive so it is prudent to address the issue.
Some of these loads are "dual sourced"- they have ATSs with normal power and UPS power inputs, or particular equipment might actually have two separate power inputs/power supplies for UPS and normal. Are there any consequences or considerations for dual fed loads when one of the sources is on isolated ground and the other is not?