Renewable sites fail quietly until protection or insulation issues force an unplanned outage far from your maintenance base.
Solar and battery storage projects place transformers and MV equipment in outdoor, often remote locations where inspection visits are infrequent and costly. Inverter harmonics, daily load cycling and switching transients stress insulation differently from steady industrial profiles — meaning standard maintenance intervals designed for conventional loads may not match actual degradation rates. When something develops between scheduled visits, the first indication is often a protection trip or failed export, not a gradual trend you had time to act on. Correcting a protection specification or cable installation issue on a remote site costs significantly more than getting it right at commissioning.
We combine harmonic- and switching-aware transformer and protection selection with documentation for grid connection approval — arresters, cable accessories and instrument transformers specified against IEC requirements so commissioning is not delayed by missing test evidence.
Remote condition monitoring provides visibility into what is happening on site when no one is there: temperature trends, load patterns and early fault indicators visible from the operations centre, reducing the need for routine physical inspection at every site on a fixed calendar.
PA-Gateway edge gateways maintain monitoring continuity when cellular backhaul is limited — local alarm processing, data buffering and continued operation when network availability is intermittent, which is common on greenfield renewable sites. Periodic infrared inspection results from site visits are uploaded through the gateway on reconnection, keeping the condition record complete regardless of network conditions.
Monitoring System"Your solar farm runs unattended. Your transformer monitoring shouldn't."
Components selected for a specific role in this scenario — not a full catalogue listing.
Generation-side or interconnection transformer matched to inverter and grid code requirements — supplied on project specification.
Remote temperature and condition visibility for assets you cannot inspect frequently — continuous data without requiring a site visit.
Edge processing and data buffering for poor network conditions — alarms and condition records maintained when the site is offline.
Lightning and switching surge protection at MV — critical on exposed outdoor switchgear and export connection points.
Best suited for solar EPC firms and BESS developers managing multiple MV interconnection points in the 1MVA to 50MVA range, especially where sites are more than two hours from a maintenance depot and remote monitoring reduces the frequency of physical inspection visits required. For utility-scale grid transformers with dedicated substation O&M teams, we can support component supply and monitoring integration as part of a broader specification process.
Further reading on the engineering behind this scenario — practical context, no sales pitch.
Thermal cycling, inverter harmonics and voltage excursions — failure mechanisms and monitoring priorities for PV transformer assets.
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Insulation aging, cooling faults, tap changers, through-fault damage and moisture — which are detectable, and what monitoring actually prevents.
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