Bavaria, Germany

Mönchwald 220 kV

Night flight after a protection trip. The hottest contact of the year: a busbar joint at 102.3 °C.

Black-hot thermal frame of Mönchwald 220 kV with the hot spot marked

TRK 0298

102.3 °C

2 contacts

48.3794° N 11.6215° E

ALT 24 m AGL · HDG 312° · 04:57 UTC

Black-hot thermal frame of Mönchwald 220 kV with the hot spot marked

TRK 0298

102.3 °C

2 contacts

48.3794° N 11.6215° E

5

ha

Area covered

20

min

Flight time

2

flagged

Anomalies found

102

°C

Hottest reading

Findings

  • Busbar joint B2-14 at 102.3 °C, priority 1

  • Breaker Q4 pole C 9 K above poles A and B

Debrief

The operator requested a flight within six hours of the trip. Plan, approval and flight took 47 minutes.

The joint was re-torqued during the following outage and re-flown: 36 °C.

Trip at two, aircraft up at five, joint found at five past.

Stefan Kraus, network operations

Next contact

Pinecrest Switchyard

Pinecrest Switchyard

End of feed · CH2

© 2026 Isotherm Systems

End of feed · CH2

© 2026 Isotherm Systems

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