I'm working with a European company providing some control equipment for an off shore drilling unit. According to the specifications, the available power feed to our control system is 690V Delta "RI". I am having trouble with the "RI" definition ... basically I can't find a description for it.
From what I gather from the sales team (I don't have a technical resource yet) it's a delta feed that one phase can be grounded without tripping the system breaker. I think it's similar to a resistance grounded system.
Any insight from the group would be appreciated.
From what I gather from the sales team (I don't have a technical resource yet) it's a delta feed that one phase can be grounded without tripping the system breaker. I think it's similar to a resistance grounded system.
Any insight from the group would be appreciated.
