Eaton Power Xpert XGIS gas-insulated switchgear (ANSI, 38 kV)
Eaton Power Xpert XGIS, ANSI 38 kV gas-insulated switchgear in 24-inch sections, SF6-insulated despite the green wave
Eaton Power Xpert XGIS gas-insulated switchgear (ANSI, 38 kV) is one of 41 data center switchgear tracked in the SecondWatt catalogue, each with specifications, lead times and indicative secondary-market pricing.
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. The clarification worth publishing: 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 dossier's market story is why GIS does not trade used, and what that means for AIS residual values, content SecondWatt can own.
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 campus intake switching where AIS footprints do not fit; procurement is new-build only with no resale optionality.
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) |
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)
Pricing and availability
Trend: up 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.
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 Enclosure — verify sealed-compartment integrity (IP65 class HV parts), pressure relief, and corrosion Interlocks — verify 3-position switch logic (closed/open/earthed) and padlock provisions Gas handling — confirm certified handling equipment and trained personnel for any gas transfer Monitoring — verify density and PD telemetry channels report correctly to the control system Nameplate — confirm kV class, BIL (75-185 kV in MV GIS), kA rating, and busbar current Standards — IEC 62271-200 (or -203 HV) type-test documentation present and matching configuration Records — gas logs, factory routine tests, and service history; sealed units without logs reprice sharply
Procurement channels
The Bellevue, Nebraska plant (30M+ USD, production 1H 2027) explicitly covers gas-insulated capacity.