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Connector Wiring Instructions
Circular Connectors / 7 Pins / 12 kV
12,000 Volts / 7.5 Amps / Air Service to 125°C

The instructions presented herein must be used in conjunction with connector wiring document number
987001 supplied with each connector. If you would like to receive a copy of this document before purchasing a connector, please contact the ISI customer service.

1. Grit blast or abrade the I.D. of shell (back end only) backshell and the entire O.D. of snap ring, using a medium grit sand media. Mask off as required and clean with acetone after grit blasting.

2. Prime I.D. of shell (back end only) with primer (A) and I.D. of backshell and entire snap ring with primer (B)

3. Lightly abrade large O.D. and back end of insulator using medium grit emery cloth. Clean with acetone.

4 Apply thin smooth layer of adhesive to large O.D. of insulator. Align with keyway and slide into shell until it bottoms out. Wipe any excess adhesive with a cotton swab. Insert snap ring behind insulator and check insulator depth as detailed. Let adhesive cure for a minimum of 12 hours before proceeding to step 5.

5. Lightly abrade back end of insulator and wire insulation approximately 1 inch from the end, using medium grit emery cloth. Wipe clean with isopropyl alcohol or acetone. 

6. Strip insulation on each conductor 3/16" to 1/4" from ends, being careful not to nick or cut conductor strands.


7. Crimp socket contacts to exposed conductors, using specified crimp tool. Crimp tool should be set to .040" closure diameter as required for #20-AWG wires.


8. Thoroughly clean wires and contacts  with isopropyl alcohol or acetone.

9. Prime back end of contacts using primer (A) and let dry for a minimum of 1 hour before applying adhesive.

10. Apply thin smooth layer of adhesive to the same areas primed in step 9 and approximately 1/4" of the wire insulation. Push crimped contacts and wires into back end of insulator, using a twisting motion, until contacts "POP" into place. Let adhesive cure for a minimum of 12 hours. 

11. Thread backshell onto shell until it bottoms out. Hand tighten.

12. Pot the back end of shell assembly using the specified potting compound. Cure for at least 12 hours @ 50% R.H. minimum before handling and 24 hours before testing.

13. Thread cable strain relief and clamp to cable as required.

Go to Circular Connectors / 7 Pins/ 12 kV products listing.