Is there a street date for the new site prep guide? I've come across a few sites now discussing un-documented solutions that are looking for "approved" methods.
For example: Take a cabinet with a redundant CIOC carrier and redundant 24VDC bulk power supplies. My gut instinct would have me wire the bulk power supplies through OR-ing diodes and jump the Primary to the Secondary CIOC carrier power supply. That may be the wrong approach though if the two power inputs on the CIOC carrier are isolated and you may want something like that described in KB NA-0800-0089, where the bulk power supplies are not connected through OR-ing diodes to maximize reliability in the case of a high voltage failure.
The other hot topic seems to be shields. Interesting options appear when you run some of the migration extensions into several cabinets, from different CIOC busses. Although I know the shield drains to be on the CIOC column terminators, I can't find a single document showing the terminations.The new 11.3 SP1 media disks just arrived and are the first media to include the white paper on landing the shields to the DC (Reference Ground). Rumor was that this White Paper was rescinded (common impedance coupling!!!). Is that official somewhere?
Thanks,
Travis
In reply to Radomir Pistek:
Travis, I saw an email about an updated version coming in December or early January of the DeltaV power and grounding document for proper design and control system electrical power and ground networks preparation. Changes should include: