ABB Installation Products R2T15M2N2330 Ranger2 Termination. Type - Outdoor, 15kV, Cable Type - Tape Shield/Wire Shield/…

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How to Install the R2T15/28M Shrink Fit Silicone Rubber Termination

This guide provides step-by-step instructions for installing the 15kV & 28kV Ranger 2 Shrink Fit Silicone Rubber Termination on tape shield cables. It covers cable preparation, ground braid installation, lug connection, and termination placement.

Estimated time: 2h

1. Prepare Cable for Termination

   DANGER: All apparatus must be de-energized during installation or removal of part(s). This product should be installed only by competent personnel trained in good safety practices involving high voltage electrical equipment. First, check that the cable size fits within the insulation range shown in the Termination Selection Chart. Train the cable into position and cut it to the length required for installation. Prepare the cable using the specified dimensions, ensuring to allow for the depth of the terminal lug and any growth allowance for aluminum lugs. To prevent the tape shield from unrolling, hold down its edge with a single wrap of the supplied copper foil tape.

2. Install Ground Braid Assembly

   Using 50% stretch, carefully wrap one band of mastic around the cable jacket 1/4" (6mm) from the jacket end. Position the mastic carefully as it also serves as a marker for termination placement; cut it flush without overlap. Position the preformed ground braid with its short tail over the tape shield and the solder block centered over the mastic strip. Secure the ground braid to the cable jacket using vinyl tape and press the solder block into the mastic. Apply a second mastic band over the solder block and the previously applied mastic, maintaining the 1/4" (6mm) dimension; cut flush without overlap. Wrap two half-lapped layers of vinyl tape around the mastic seal, carefully maintaining the 1/4" (6mm) dimension. Wrap the ground braid around the cable tape shield one complete wrap, trim any excess to prevent overlap, and secure it in place with the constant force spring. Wrap the spring in the same direction as the ground braid, cinch (tighten) it after the final winding, and secure it with two wraps of vinyl tape. SPECIAL NOTE: For cables with cloth or paper semi-conductive insulation shields, overwrap the shield with one half-lapped layer of highly stretched semi-conductive rubber tape (e.g., Scotch® No. 13).

3. Install Terminal Lug or Connector

   Check to ensure the termination assembly fits over the selected lug. If the lug will not fit through the termination core, clean the insulation and slide the termination onto the cable before installing the lug (do not remove the core at this time). Position the connector/lug and crimp it according to the manufacturer’s directions. Do not crimp the last 3/8" to 1/2" of the connector. Remove any excess oxide inhibitor and all sharp crimp flashings and edges following crimping.

4. Clean Cable Insulation and Lug Barrel

   Wipe the cable insulation with an approved solvent, ensuring not to allow the solvent to touch the semi-conductive insulation shield. If abrasive cleaning must be used, apply it only to the insulation (use aluminum oxide abrasive, grit 120 or finer) and do not use it on the semi-conductive insulation shield. Be careful not to reduce the cable insulation diameter below that allowed by the kit.

5. Install the Silicone Rubber Termination Body

   IMPORTANT: A track-resistant moisture seal must be made between the termination insulator and the lug/connector using the gray silicone rubber electrical tape (contained in the kit). Wrap a band of silicone tape around the base of the terminal lug. If the barrel diameter is equal to or greater than the cable primary insulation, the tape band should not exceed 2 layers. If the barrel diameter is smaller than the cable primary insulation, use the tape strip to form the tape band equal to the insulation diameter. Cover the edge of the semi-conductive insulation shield with a liberal coating of silicone grease; on this product, the silicone is used to fill the step at the semi-con cut-off. On lower terminations with a fold-down skirt, pull the loose end of the removable core through the top of the termination until the core is flush with the bottom of the termination. Slide the termination body onto the cable, aligning the termination with the forward edge of the mastic seal. Carefully begin to remove the core by unwinding it counter-clockwise, starting with the loose end. Make sure the termination body, not the core, is butted up to the leading edge of the mastic seal. Continue to remove the core without pushing or pulling on the termination assembly.

6. Complete Termination Sealing and Grounding

   Apply a thin film of silicone lubricant to the skirt and mastic seal area; do not lubricate the skirt tabs. Carefully fold down the skirt over the mastic seal. With the termination installed, complete the lug area moisture seal using the remaining gray silicone rubber electrical tape. Overlap the termination insulator by approximately 1" and extend the tape wrapping over a non-crimped region of the lug/connector barrel with a half-lap configuration. Connect the ground braid to the system ground. Finally, confirm that the High-K step does not exceed 1.5".

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