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Overview
- 15/25 kV voltage class with 600 Amp continuous rating
- Built-in test point for diagnostic testing without service interruption
- Aluminum compression lug compatible with 250-300 kcmil conductors
- Cable adapter for insulation diameters 0.980" to 1.180"
- Deadbreak design eliminates arc flash risk during disconnection
Specifications
Amperage Rating | 600 A |
Application | 15/25kV, 600 Amp Deadbreak Elbow Connection |
Color | Black |
Conductor Range | 250 kcmil , 300 kcmil |
Environmental Conditions | Fully Submersible |
Insulation | True |
Length | 13 in |
Length | 330.2 mm |
Material | Housing - EPDM-Rubber |
Special Features | Fully Shielded, Fully Submersible Molded Rubber Housing. 100 percent Peroxide-Cured Construction includes Insulation and Conductive EPDM Materials. Can be Easily Connected or Disconnected using Standard Hand Tools and Equipment in a De-Energized State. Non-Corrosive, Capacitive Test Point |
Standard | ANSI/IEEE Standard 386 |
Temperature Rating, Maximum | 149 F |
Temperature Rating, Maximum | 65 C |
Temperature Rating, Minimum | -40 F |
Temperature Rating, Minimum | -40 C |
Type | Deadbreak Elbow Connector with Test Point |
Voltage Rating | 25 kV |
Width | 10.36 in |
Width | 263.144 mm |
Package Dimensions (L x W x H) | 0.01 IN x 0.01 IN x 0.01 IN |
Package Dimensions (L x W x H) | 0.0254 cm x 0.0254 cm x 0.0254 cm |
Package Weight (Imperial) | 6.4000 L |
Package Weight (Metric) | 2.9030 kg |
K655SR-J0280
600 Amp, 15/25kV, 600 Series Deadbreak Straight Receptacle with Cable Adapter, Lug and Retaining Ring. Cable Insulation Diameter 0.980 inch to 1.180 inch. Aluminum Compression Lug. Conductor Size kcmil Compressed Stranded 250 or Compacted Solid 300.
K656LR-LM0380-S
15/25kV 600 Amp Series Deadbreak Elbow with Test Point (with Insulated Plug, Cap, Stud, Lug and Cable Adapter), Aluminum Compression Lug. Cable Insulation Diameter 1.280 inch to 1.430 inch. Conductor Size Compressed/Stranded 700/750 or Compact/Solid 900. Cold-Shrinkable Jacket Seal Included.K656LR-LM0330-S
15/25kV 600 Amp Series Deadbreak Elbow with Test Point (with Insulated Plug, Cap, Stud, Lug and Cable Adapter), Aluminum Compression Lug. Cable Insulation Diameter 1.280 inch to 1.430 inch. Conductor Size Compressed/Stranded 500 or Compact/Solid 600 or mm2 Compact 250/300. Cold-Shrinkable Jacket Seal Included.K656LR-K0300-SG3
15/25kV 600 Amp Series Deadbreak Elbow with Test Point (with Insulated Plug, Cap, Stud, Lug and Cable Adapter), Aluminum Compression Lug. Cable Insulation Diameter 1.090 inch to 1.310 inch. Conductor Size Compressed/Stranded 350 or Compact/Solid 400 or mm2 Compact 185. Cold Shrinkable Seal with Copper Braid and Constant Force Spring Included.K656LR-L0330
15/25kV 600 Amp Series Deadbreak Elbow with Test Point (with Insulated Plug, Cap, Stud, Lug and Cable Adapter), Aluminum Compression Lug. Cable Insulation Diameter 1.180 inch to 1.465 inch. Conductor Size Compressed/Stranded 500 or Compact/Solid 600 or mm2 Compact 250/300.K656LR-J0290
15/25kV 600 Amp Series Deadbreak Elbow with Test Point (with Insulated Plug, Cap, Stud, Lug and Cable Adapter), Aluminum Compression Lug. Cable Insulation Diameter 0.980 inch to 1.180 inch. Conductor Size Compressed/Stranded 300 or Compact/Solid 350 or mm2 Compact 150.K656LR-K0330
15/25kV 600 Amp Series Deadbreak Elbow with Test Point (with Insulated Plug, Cap, Stud, Lug and Cable Adapter), Aluminum Compression Lug. Cable Insulation Diameter 1.090 inch to 1.310 inch. Conductor Size Compressed/Stranded 500 or Compact/Solid 600 or mm2 Compact 250/300.Frequently Asked Questions
What is the maximum operating voltage for the K656LR elbow connector?
For the 15kV voltage class, the maximum operating voltage is 8.3kV phase-to-ground and 14.4kV phase-to-phase. For the 28kV voltage class, it is 16.2kV phase-to-ground and 28kV phase-to-phase.
What is the conductor size range for the K656LR elbow connector?
The K656LR can be used with conductor sizes ranging from #2 AWG to 1250 kcmil for both aluminum and copper conductors.
What is the insulation diameter range for the K656LR elbow connector?
The K656LR is designed for insulation diameters ranging from 0.640 inches to 1.935 inches.
What standards does the K656LR elbow connector meet?
The K656LR elbow connector meets ANSI/IEEE Standard 386, Latest Revision.
What is the continuous current rating for the K656LR elbow connector?
The K656LR elbow connector has a continuous current rating of 600 Amps.
What is the momentary current rating for the K656LR elbow connector?
The K656LR elbow connector has a momentary current rating of 25kA Sym for 10 Cycles.
What is the impulse withstand rating for the K656LR elbow connector?
For the 15kV class, the impulse withstand is 95kV BIL. For the 28kV class, it is 140kV BIL.
What is the AC one-minute withstand voltage for the K656LR elbow connector?
For the 15kV class, the AC one-minute withstand is 34kV. For the 28kV class, it is 45kV.
What is the DC fifteen-minute withstand voltage for the K656LR elbow connector?
For the 15kV class, the DC fifteen-minute withstand is 53kV. For the 28kV class, it is 84kV.
What is the corona extinction rating for the K656LR elbow connector?
For the 15kV class, the corona extinction is 11kV AC @ 3pC sensitivity. For the 28kV class, it is 21.5kV AC @ 3pC sensitivity.
How to Install 655/675LR and K655/K675LR Deadbreak Elbow Connectors
This guide provides step-by-step instructions for the safe and proper installation of 655/675LR and K655/K675LR deadbreak elbow connectors, designed for fully shielded, submersible cable connections to high voltage apparatus.
Estimated time: 2h
Tools needed:
Cable cutting tool, Wire strippers, Crimping tool, Wire brush, Torque wrench, Hotstick, Suitable capacitive voltage sensing device
Supplies needed:
655/675LR or K655/K675LR Deadbreak Elbow Connector Kit (includes Elbow, Cable Adapter, Compression Lug, Insulating Plug, Lubricant, Stud Prepack), No. 14 AWG Copper wire (or equivalent ampacity), Suitable grounding connector, Silicone lubricant (if not included in kit or insufficient), Waterproofing material (for cable jacket)
- De-energize Apparatus and Ensure Safety
DANGER: Before beginning any work, ensure all apparatus is completely de-energized. Do not touch or move energized products in the work area. This installation must only be performed by competent personnel trained in good safety practices involving high voltage electrical equipment.
- Assemble Cable and Cut to Length
Assemble the cable in its final position with enough slack to provide adequate clearance for removing the elbows. For concentric neutral cable, unwind the neutral wires. Cut the cable 1-3/4” (45mm) from the centerline of the mating product.
- Clean Cable Outer Surface
Clean the outer surface of the cable for a distance of 24” (610mm) or up to the bent back concentric neutral wires.
- Prepare Cable for Connector
Remove the outer jacket (if applicable) and prepare the cable according to the specific type (e.g., non-jacketed concentric neutral, jacketed shield wires, flat metallic tape shield, fabric tape shield, or longitudinally corrugated shield). Ensure precise dimensions for cable insulation, semi-con shield, and tape markers as illustrated in the documentation. Refer to separate instructions for grounding devices or cable shield adapters if used.
- Install and Lubricate Cable Adapter
Bevel the end of the cable insulation at a 45-degree angle, approximately 1/4” (6mm) back. Thoroughly clean and lubricate the cable insulation, always working towards the semi-con shield. Install the cable adapter, small end first, until it is flush with the edge of the tape marker.
- Prepare Conductor Length
Remove the protruding cable insulation by cutting it even with the end of the cable adapter. Do not cut or nick the cable adapter or the conductor. Verify the exposed conductor length is between 4-1/4” – 4-9/16” (108mm-116mm). If the length is incorrect, redo the assembly from the cable preparation step.
- Crimp Compression Lug
For copper conductors, fully insert the conductor into the compression lug. For aluminum conductors, wire brush the conductor and immediately fully insert it. Measure the 'Check Dimension' before crimping (it should be less than 6-3/8”). Crimp the compression lug following its supplied instructions. Wipe all excess inhibitor. After crimping, verify the distance from the end of the compression lug to the cable adapter is between 6-3/8” to 7-1/8” (162mm-181mm). If incorrect, redo the assembly.
- Install and Lubricate Elbow
Lubricate the cable adapter and the inside of the elbow cable entrance. Install the elbow onto the cable adapter until it cannot advance further. Ensure the cable adapter remains flush with the tape marker. If not, reposition the cable adapter. Remove the tape marker.
- Prepare and Connect Mating Products
Remove protective caps from the elbow and the mating part. If the mating part lacks a stud, hand tighten the threaded stud supplied with the elbow into it. Clean and lubricate both the elbow and the mating part with the supplied lubricant, ensuring all surfaces remain clean.
- Push Elbow onto Mating Part
Push the elbow onto the mating part, carefully aligning the hole in the compression lug with the stud on the mating part.
- Connect Opposite End Mating Product
Clean and lubricate the mating part for the opposite end of the elbow. Insert this mating part into the elbow. Engage the threads and hand tighten. Torque the mating part according to its supplied instructions. For 600-amp L-Kits, ensure each component is tightened to the specified torque.
- Install Insulating Plug (if applicable)
If an insulating plug is used as a mating part, clean and lubricate the inner surface of the voltage detection cap. Place the cap on the elbow and push down hard until it snaps into place.
- Ground the Cable Shield
Insert one end of a wire (with ampacity at least equivalent to No. 14 AWG Copper) through the grounding eye and twist to form a small loop; do not damage the eye. Connect this wire to ground using a suitable connector. The cable shield must be grounded, either through a grounding device (following its instructions) or an alternate method. Waterproof the cable jacket at this point to prevent moisture ingress.
- Perform Voltage Test
WARNING: The voltage test point is a capacitance device; it is not directly connected to the conductor. Do not use conventional voltage measuring equipment. Remove the test point cap with a hotstick, peeling off at an angle. Test with a suitable sensing device designed for capacitive test points to determine if the cable is energized. Treat the elbow as energized until the 'no voltage' indication is confirmed by other means. After testing, clean and lubricate the inside surface of the cap with silicone lubricant and replace it on the test point.
Frequently Asked Questions about ABB - Installation Products
How are Thomas and Betts products typically installed?
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