Splicing Using Insulated Moisture Proof Butt Connector

Splicing using insulated moisture proof butt connector

Table for insulated moisture proof butt connectors
















Prepare the cables




- Select a suitable butt connector according to cable area.
- Cut the cables
- Strip cables to strip length as shown in table above.

Splicing cables of different areas




If the cable areas are so different that they will not fit in the same butt connector, do as follows:
- Select butt connector to fit the larger cable.
- Strip the smaller cable to double length and bend the stripped section double.

Splice with several cables (branch point)




Select a butt connector large enough to take the cables to be inserted on the same side.
If a single cable is to be inserted on one side of the butt connector it will more than likely have too small an area compared to the opening in the butt connector.
Strip the cable to double length and bend it double.

Locate the butt connector in the crimp tool




Use the crimp tool recommended in Other tools Other Tools.
- Locate the butt connector in crimp tool jaws
Use the correct insert that matches the area of the butt connector.
- Apply pressure to the tool grips until the insert in the jaws retains the without deforming it.
- Insert cables in both ends of the so that each stripped section of core is up against the center divider in the butt connector.

Crimping a butt connector





Before completing crimping:
- Check that the butt connector is correctly located in the crimp tool forming section.
- Check the cables are still in the correct position in the butt connector.
If the butt connector is not correctly located, abort the crimp operation.
On most crimp tools of this type there is a locking device that can be released to open the tool. See picture.





Complete the crimping operation:
- Press the tool grips together to close the jaws
Do not release pressure on the grips until the tool has fully completed the crimp operation. Not until then will complete crimping have occurred and the tool can be opened.

Inspect the crimped butt connector




If the butt connector has been correctly crimped both crimping points should be uniformly compressed.
All cables should be crimped in place towards the center of the butt connector and not displaced towards the ends.
Pull the cables to ensure that none are loose.

Shrink butt connector using heat gun




After crimping the butt connector it must be shrunk using a heat gun.
The butt connector has an internal layer of glue which is released when heated and flows out and around the cables. The glue and crimp together provide a mechanically robust and moisture proof splice.
- Use a heat gun with a high enough rating to shrink the crimped butt connector.





Inspect results of shrinking
Check the shrinking results. If OK the glue should have been forced out of the ends of the butt connector and around the splice.