3
T1

Main Power Transformer T1

ABB / GE (TBD) · 42 MVA, 69/34.5 kV Δ-Y · Site east-thistle

WarningTier 1 criticalLead-time 2–3 yr
Headline signal
Winding hot-spot74.00 °C
Nameplate
MVA42 / 56 / 70 ONAN/ONAF/ONAF
HV69 kV
LV34.5 kV
VectorDyn1
Impedance8.5%
LTC Positions±10 × 0.625%
CoolingONAN/ONAF
Installed2026-09-15
Children
Calisto R9 · T1
Calisto R9 (9-gas online DGA)
Calisto T1 · T1
Calisto T1 — IDD + PD Guard + iO
LTC · T1
MSENSE

Alarm history

Warning4h ago
Bushing PF drift · T1 LV-B
tan δ drifted from 0.32% → 0.45% over 30 days — 0.5% alarm threshold. doblePRIME expert system flagged deviation.

Command palette

Search assets, alarms, sites, and quick actions

APG Copilot
Hi — I'm your APG assistant. Ask me anything: "any critical alarms?", "draft a DGA report for T2", "what spares are behind their lead time?"

Powered by CopilotKit