Potting Process

1) Pre heat resin to 120℉.

2) Mix resin / hardener at a volume ratio of 100:12.

3) Apply a 4 mm thick epoxy floor to bottom of can.(No Vacuum required)

4) Allow to harden. Approximately 24 hour.

5) Assemble Transformer into Can.

6) Place Can into vacuum chamber.

7) Pull a 10 to 40 torr vacuum for 5 minutes.

8) Fill can till transformer is covered with epoxy.(Under vacuum)

9) Total vacuum time is 20 minutes.

10) Apply 60 PSI for 6 minutes.

11) Remove part from vacuum and fill can to top and apply cover.

12) Allow to cure for 24 hour .

13) Over cure for 6 hours at 60 ℃.(Actual times mat vary as process is developed with new equipment)

Some facts

Total epoxy is approximately 9 lbs per unit(4100 grams)

This equayes to 150 cubic inches of epoxy.(2460 cu cm)

Epoxy flow rate of 123 cu cm per minute = 1 part in 20 minutes.

200 cu cm / minute is a better rate.