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Overview
- 15/25kV voltage rating for medium voltage applications
- 600 Amp current rating for robust power handling
- Integrated test point for diagnostic access
- Accommodates cable insulation diameters from 0.760" to 0.950"
- Supports 250 kcmil compressed/stranded or 300 kcmil compact/solid conductors
Specifications
Amperage Rating | 600 A |
Application | 15/25kV, 600 Amp Deadbreak Elbow Connection |
Color | Black |
Conductor Range | 250 kcmil , 300 kcmil |
Connection Type | Deadbreak Elbow |
Current Rating | 600 A |
Environmental Conditions | Fully Submersible |
Insulation | True |
Length | 13 in |
Length | 330.2 mm |
Material | Aluminum |
Material | Housing - EPDM-Rubber |
Series | K656LR |
Size | Cable Insulation Diameter 0.760 inch to 0.950 inch |
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 |
Voltage Rating | 15/25 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) | 1.0000 L |
Package Weight (Metric) | 0.4540 kg |
K656LR-N0280
15/25kV, 600 Amp, DeadBreak, Elbow with Test Point (includes Insulated Plug, Cap, Stud, Lug and Cable Adapter). Cable Insulation 1.515-1.780 inches, Aluminum Compression Lug, Conductor Size 250 Stranded/Compressed
K656LR-M5380-S
15/25kV 600 Amp Series Deadbreak Elbow with Test Point (with Insulated Plug, Cap, Stud, Lug and Cable Adapter), Bi-Metal Compression Lug. Cable Insulation Diameter 1.370 inch to 1.630 inch. Conductor Size Compressed/Stranded 700/750 or Compact/Solid 900. Cold-Shrinkable Jacket Seal Included.K656LR-H0250
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 0.850 inch to 1.050 inch. Conductor Size Compressed/Stranded 2/0 or Compact/Solid 3/0 or mm2 Compact 70.K656LR-N0380
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 1.515 inch to 1.780 inch. Conductor Size Compressed/Stranded 700/750 or Compact/Solid 900.K656LR-G5240
25 kV, 600 Amp, Deadbreak, Elbow Kit, with Test Point, Insulated Plug, Cap, Stud, Bi-Metal Lug, and Cable Adapter. Cable Insulation Diameter .760-.950. Conductor Size 1/0 Stranded/Compressed or 2/0 Compact/SolidK656LR-M0330
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 1.370 inch to 1.630 inch. Conductor Size Compressed/Stranded 500 or Compact/Solid 600 or mm2 Compact 250/300.K656LR-N0360
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 1.515 inch to 1.780 inch. Conductor Size Compressed/Stranded 650 or Compact/Solid 750 or mm2 Compact 400.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. For the 28kV voltage class, it is 16.2kV phase-to-ground.
What conductor sizes can the K656LR handle?
The K656LR can be used with conductor sizes from #2 AWG to 1250 kcmil for both aluminum and copper conductors.
What is the continuous current rating for this elbow connector?
The K656LR elbow connector has a continuous current rating of 600 Amps.
What is the impulse withstand rating for the 28kV voltage class?
The impulse withstand rating for the 28kV voltage class is 140kV BIL (1.2 x 50 microsecond wave).
What is the AC one-minute withstand voltage for the 15kV class?
The AC one-minute withstand voltage for the 15kV voltage class is 34kV.
What is the corona extinction level for the 28kV voltage class?
The corona extinction level for the 28kV voltage class is 21.5kV AC at 3pC sensitivity.
What is the range of insulation diameters the K656LR can accommodate?
The K656LR can accommodate insulation diameters ranging from 0.640 inches to 1.935 inches.
What is the momentary current rating for the K656LR?
The momentary current rating is 25kA Sym for 10 Cycles.
What materials are used in the construction of the K656LR housing?
The housing is made of molded rubber and is 100% peroxide-cured, including insulation and conductive EPDM materials.
How to Install K655/K675LR Deadbreak Elbow Connectors
This guide provides step-by-step instructions for the safe and proper installation of K655/K675LR Deadbreak Elbow Connectors, including cable preparation, lug crimping, and connection to high voltage apparatus.
Estimated time: 1h 30m
Tools needed:
Cable cutting tool, Wire strippers, Wire brush, Crimping tool, Hotstick, Suitable capacitive voltage sensing device, Torque wrench
Supplies needed:
K655/K675LR Deadbreak Elbow Connector kit (Elbow, Cable Adapter, Compression Lug, Insulating Plug, Lubricant, Stud Prepack), No. 14 AWG Copper wire (or equivalent) for grounding, Suitable ground connector, HV insulated cap(s) or connector(s) (if replacing shipping covers), Silicone lubricant, Tape marker, Waterproofing material (for cable jacket)
- De-energize Apparatus and Prepare Cable
DANGER: Ensure all apparatus is de-energized before beginning installation. Assemble the cable in its final position with enough slack. For concentric neutral cable, unwind the neutral wires. Cut the cable 1-3/4” (45mm) from the centerline of the mating product. Clean the outer surface of the cable for a distance of 24” (610mm) or up to the bent back concentric neutral wires. Remove any protective shipping covers and replace with appropriate HV insulated caps or connectors before energizing.
- Prepare Cable Insulation and Install Adapter
Prepare the cable by removing the outer jacket and semi-con shield according to the specific cable type and dimensions provided in the product documentation. Bevel the end of the cable insulation at a 45-degree angle, approximately 1/4” (6mm) back. Thoroughly clean and then lubricate the cable insulation, 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 and Install Compression Lug
Remove any protruding cable insulation by cutting it even with the end of the cable adapter, being careful not to cut or nick the adapter or conductor. The exposed conductor length must be between 4-1/4” to 4-9/16” (108mm-116mm). 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 (must be less than 6-3/8”). Crimp the compression lug according to its supplied instructions. Wipe off any excess inhibitor. The distance from the end of the lug to the cable adapter after crimping should be 6-3/8” to 7-1/8” (162mm-181mm).
- Install Elbow onto Cable Adapter
Lubricate the cable adapter and the inside of the elbow's cable entrance. Install the elbow onto the cable adapter until it cannot advance further. Verify that the cable adapter remains flush with the tape marker; reposition if necessary. Remove the tape marker.
- Connect Elbow to Mating Apparatus
DANGER: Do not connect or disconnect mating products while energized, and do not energize while disconnected. Remove protective caps from both 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 surfaces remain clean. Push the elbow onto the mating part, aligning the hole in the compression lug with the stud on the mating part.
- Connect Second Mating Part and Torque
If connecting a second mating part to the opposite end of the elbow, clean and lubricate its surface. Insert the mating part into the elbow, engage the threads, and hand tighten. Torque the mating part according to its specific instructions. CAUTION: When constructing 600-amp L-Kits, ensure each component is tightened to the specified torque.
- Install Insulating Plug (if applicable) and Ground Cable
If an insulating plug is used as a mating part, clean and lubricate the inner surface of the voltage detection cap and place it on the elbow, pushing until it snaps into place. Insert one end of a No. 14 AWG Copper wire (or equivalent) through the grounding eye, twist to form a small loop, and connect it to ground using a suitable connector. The cable shield must be grounded as per instructions for the grounding device or an alternate method. Waterproof the cable jacket to prevent moisture ingress.
- Perform Voltage Test
WARNING: The voltage test point is a capacitance device, not directly connected to the conductor. Do not use conventional voltage measuring equipment. Remove the test point cap with a hotstick, peeling it off at an angle. Use a suitable sensing device designed for capacitive test points to determine if the cable is energized. Treat the elbow as energized until a 'no voltage' indication is confirmed by other means to prevent serious injury. After testing, clean and lubricate the inside surface of the cap with silicone lubricant and replace it on the test point.
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