Ben,
Thanks for the reply!. [Linked Image]
I'm a HV Faultsman here in New Zealand and this sort of thing is "Bread and Butter" to me.
Also I have quite a bit of experience with the ABB VT series of Circuit protection.
Tell me, was the new equipment of the same "ratio" as the old?.
Also, we use the Siemens SJ5005 on a few of our systems here.
Are you sure that you haven't got a conductor going through the loop in the wrong direction?.
I can only sort of help, I think.