Eaton Power Xpert XGIS gas-insulated switchgear (ANSI, 38 kV)
Manufacturer: Eaton
Eaton Power Xpert XGIS, ANSI 38 kV gas-insulated switchgear in 24-inch sections, SF6-insulated despite the green wave
This model is part of SecondWatt’s switchgear research catalogue. Specifications and price observations are included where supported by sources. Equipment availability and commercial terms require confirmation.
Eaton Power Xpert XGIS dossier: ANSI 38 kV GIS at 2,500 A and 31.5 kA with 170 kV BIL in 24-inch sections, SF6 clarification, GIS illiquidity analysis.
Power Xpert XGIS is Eaton's ANSI-market compact gas-insulated MV switchgear: sealed SF6-insulated sections with vacuum interruption, 24 inches wide, arc-resistant, aimed at 38 kV-class duty where air-insulated gear cannot fit. Published ratings: up to 38 kV, 2,500 A continuous, 31.5 kA interrupting, BIL 170 kV, tested to IEEE C37.20.7 Type 2B and IEC 62271-200 AFLR with IEEE C37.20.9 (the ANSI GIS standard) and CSA C22.2 No. 31, in sections 24 by 71 by 106 inches.
Despite the category's SF6-free momentum, XGIS is SF6-insulated; Eaton's natural-origin-gas alternative is the newer Power Xpert IGX line (5-38 kV) with its VacAir model, which looks like the growth platform.
No used XGIS listing exists anywhere, and sealed-gas MV GIS rarely trades: resale requires OEM gas handling, and CARB-style rules penalize SF6 acquisitions. The reason gas-insulated switchgear does not trade used bears directly on the residual value of air-insulated alternatives.
Why it matters
XGIS is the ANSI-market case study in GIS illiquidity: a current, US-spec, data-center-relevant product with literally zero secondary supply. That fact reframes AIS-versus-GIS procurement, air-insulated gear retains residual value and resale optionality that sealed SF6 sections structurally cannot.
Who buys it
US data center campuses and utilities needing 38 kV-class switching in tight footprints specify XGIS new; the 78-104 week class lead time is the constraint. Buyers wanting SF6-free at the same duty evaluate IGX VacAir; nobody buys used XGIS because none exists.
Role in the data center
Compact 34.5-38 kV class campus intake switching where an air-insulated footprint will not fit the available electrical room or yard, sitting between the utility service and the step-down transformers. Procurement is new-build only: there is no resale optionality on a sealed section, so the acquisition case has to stand on footprint and lead time alone.
Key specifications
| Voltage ceiling | 38 kV |
|---|---|
| Continuous current | 2,500 A |
| Interrupting | 31.5 kA |
| BIL | 170 kV |
| Arc resistance | IEEE C37.20.7 Type 2B; AFLR |
| GIS standard | IEEE C37.20.9 |
| Section footprint | 24 x 71 x 106 in |
| Insulation clarification | SF6 (IGX VacAir is the SF6-free path) |
| Construction | sealed SF6-insulated sections with vacuum interruption |
| Additional standard | CSA C22.2 No. 31 |
Technical summary
Voltage: up to 38 kV. Continuous current: 2,500 A. Interrupting: 31.5 kA. BIL: 170 kV. Insulation: SF6 (sealed); interruption in vacuum. Arc resistance: IEEE C37.20.7 Type 2B; IEC 62271-200 AFLR. GIS standard: IEEE C37.20.9; CSA C22.2 No. 31. Section size: 24 x 71 x 106 in. Construction: sealed sections, arc-resistant, vacuum interruption. Capacity note: Bellevue NE plant adds GIS output 1H 2027. SF6-free alternative: Power Xpert IGX (VacAir model).
Major variations
Breaker, switch and metering sections on the sealed 24-inch platform across the 5-38 kV classes, all arc-resistant and all SF6-insulated with vacuum interruption, in sections measuring 24 by 71 by 106 inches. The Power Xpert IGX sibling covers the same 5-38 kV span with a compact arc-resistant design that adds a VacAir natural-origin-gas model, and it is the line Eaton positions for buyers who want the footprint without the gas inventory. Full rating matrices sit in the design guide linked from the product page.
Configurations and options
Sections are ordered by duty, breaker, switch or metering, on a fixed 24-inch-wide platform measuring 24 by 71 by 106 inches, so section count is the main lever on lineup price and floor area. Within that, the variables are the voltage class up to 38 kV, the continuous rating to 2,500 A, the 31.5 kA interrupting rating, and the relay and instrument-transformer package. Arc resistance is built into the platform and tested to IEEE C37.20.7 Type 2B with IEC 62271-200 AFLR. Full rating matrices sit in the design guide linked from the product page. Eaton's SF6-free path at the same voltages is the separate Power Xpert IGX line with its VacAir model, not an XGIS option.
Compatibility and dependencies
XGIS is sealed and SF6-insulated with vacuum interruption, so gas density monitoring, certified gas handling for any relocation, and end-of-life recovery are permanent obligations rather than installation tasks. Ratings are 38 kV, 2,500 A, 31.5 kA and BIL 170 kV, which have to be matched to the upstream transformer and the network fault contribution. The compact section is what buys the footprint, and the arc-resistant rating to IEEE C37.20.7 Type 2B is valid only with the tested clearances and exhaust arrangement, so the room and any plenum have to be designed around it. Standards coverage is IEEE C37.20.9 for ANSI gas-insulated switchgear plus CSA C22.2 No. 31, which makes it directly specifiable in Canada as well.
Pricing and availability
Trend: rising What is dated and documented is category-level: medium-voltage switchgear up 50% since 2021 per Electrical Trader's 2026-04-01 review, and 78-104 week lead times for the 38 kV class per Terrapin Construction Group, 2026-06-10. The supply-side item to watch is Eaton's Bellevue, Nebraska plant, a 30 million USD-plus investment adding gas-insulated capacity from the first half of 2027. Lead time, new: 78-104 weeks (38 kV class); Bellevue NE plant adds capacity 1H 2027. Lead time, used or refurbished: No used channel (sealed SF6 GIS). Warranty, used: 1-year typical from reconditioning dealers.
Lifecycle and maintenance
Gas-insulated switchgear targets 35-40 year service from sealed-for-life compartments with minimal maintenance: density monitoring, PD surveys, and mechanism service. Sealed tanks cannot be repaired in the field, so gas loss or internal fault usually ends the asset. EU F-gas and CARB rules add end-of-life SF6 recovery and reporting obligations that must be priced into any SF6 unit, while SF6-free designs (clean air, dry air, C4-FN mixtures) remove that liability entirely.
Thermal and emissions profile
The regulatory story is the insulation gas: SF6 carries a global warming potential of 24,300 and an atmospheric lifetime near 3,200 years. EU Regulation 2024/573 bars placing new SF6 switchgear at or below 24 kV on the EU market from 2026-01-01, extends to 52-145 kV classes from 2028, above 24 to 52 kV from 2030, and above 145 kV from 2032. California's CARB rule phases out acquisition of new SF6 gas-insulated equipment from 2025 on a staged schedule. Legacy SF6 gear remains legal to operate but faces stranded-asset discounts and end-of-life gas recovery obligations.
Common failure points
- Gas leakage — Density alarms and lockout; insulation margin lost as pressure falls
- Partial discharge in compartments — PD at spacers, particles, or terminations progressing to internal fault
- Operating mechanism — Spring and motor failures on switch and breaker drives
- Cable terminations — Tracking in cable boxes and poorly seated plug-in connectors
- Density monitor drift — False alarms or missed low-gas conditions from drifted gauges
- End-of-life gas liability — SF6 recovery and reporting costs land on the owner at decommissioning
Inspection checklist
Gas density: verify density monitors against nameplate fill (150 kPa class systems); alarm thresholds intact. Leak rate: review gas top-up logs; leakage above 0.5% per year fails modern acceptance. Gas quality: test SF6 moisture and decomposition before transfer; SO2 presence flags internal arcing. F-gas compliance: verify EU 2024/573 and CARB status; new SF6 MV gear is barred from the EU market from 2026. Partial discharge: UHF or acoustic survey per IEC 60270 practice; PD is the dominant latent defect. Vacuum interrupters: hipot test breaking units; interruption is vacuum even in gas-insulated designs. Mechanism: exercise and verify spring charge; check counters against 10,000-operation class ratings. Terminations: inspect cable boxes for tracking; verify stress cones and plug-in connectors seated.
Procurement channels
Eaton's Bellevue, Nebraska plant, a 30 million USD-plus investment with production from the first half of 2027, explicitly adds gas-insulated capacity, which is the supply-side development to watch on lead times.
Regional notes
An ANSI-market product, which is unusual for compact gas-insulated switchgear: built to IEEE C37.20.9 and CSA C22.2 No. 31 with IEEE C37.20.7 Type 2B arc resistance for 60 Hz North American 34.5-38 kV work, and also carrying IEC 62271-200 AFLR classification. California's SF6 rule caps utility emissions at 1% per year from 2020 and phases out new SF6 equipment from 2025, so a CARB-jurisdiction project should be looking at the SF6-free IGX line instead. Eaton is adding gas-insulated capacity at its Bellevue, Nebraska plant from the first half of 2027.