Read the study change.
Vela records the revised 34.5 kV bus fault duty of 33.8 kA and the stated 40 kA switchgear minimum.
Utility & interconnection
Utility changes stay connected to the equipment and activities they can affect.
See Vela at workUtility & interconnection
Keep utility studies tied downstream.
Vela compares utility study revisions and follows changed requirements into the design and the active orders. Each finding stays tied to the source study and to the project records that need review.
Review the revised Oncor study.
Vela compares ONC-FS-104 Rev 04 with Rev 03, then checks the 40 kA switchgear minimum against NAC-E-214 Rev 03, NAC-EQ-221 and PO-24031. Jordan Lee reviews the interconnection finding.
What changed in the utility's revised study, and does it affect equipment we've already ordered?
Northstar 300 MW AI CampusShared project
One clause, traced through the yard.
A restudy is one clause in a long document. Vela traces it to the equipment it rules out, and to every record that has to change with it.
- 1This is the substation the project has to energize.
- 2Every piece of equipment is also a symbol on the single-line.
- 3Vela holds both as one record, under one tag.
- 4Then the utility raises fault duty to 33.8 kA.
- 5Only what the change touches reacts: SG-01 and four records.
- 6Four revisions, prepared for review. Everything else stays put.
Northstar 300 MW AI Campus · 138 / 34.5 kV substation
- ONC-FS-104 · Rev 04 · §4.3SG-01 is 31.5 kA in the design and on the orderFault duty 27.6 kA to 33.8 kA. Switchgear minimum 40 kA.
- Switchgear submittalNAC-EQ-221 · Rev 0231.5 kA to 40 kAPrepared for review
- Purchase orderPO-24031Change request, 40 kA lineupPrepared for review
- Protection studyNAC-E-214 · Rev 03Rerun at 33.8 kAPrepared for review
- Schedule activityNAC-CX-4410Retest before NAC-MIL-5000Prepared for review
Illustrative substation and single-line. The arrangement and the equipment are representative, not the design of a specific site.
Review the sources and the proposed changes.
Trace the requirement.
The new issue is linked to SG-01, the protection study, the switchgear submittal and the active order.
Stage the technical review.
Vela prepares the affected records and open checks for Jordan Lee before anyone changes a design or a supplier instruction.
The other two domains.
Get to know Vela.
Meet the team behind Vela and learn what we're building for power infrastructure.
An introductory conversation. No preparation needed.