All pictures and information supplied by RODALCO:

Quote
500 kVA, 11 kV / 230 / 400 Volts Transformer at Orbit road Albany TB 2163
Jumpers were 120 mm² Copper

I had to adjust a streetlight timeclock.
When I opened the door I smelled burning and hot plastics.
I took the photo's and closed the door, did not want to disturb anything in case a phase to phase flashover occurred.
Arranged an emergency shutdown to upgrade the jumpers.
New 240 mm² jumpers were put in that evening.
Next day I took a load check and measurements were as listed.

Load on Red phase 600 Amps
Yellow Phase 470 Amps
Blue Phase 440 Amps
Still within the 500 kVA rating which is 696 Amps per phase.

Currently there are another 2 big buildings nearing completion. the transformer will be upgraded to 750 or 1000 kVA.

Regards

Raymond

The pics:

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Thank you Ray!. [Linked Image]