The JJCD 10 kV Insulation Piercing Grounding Clamp is designed for reliable grounding and temporary electrical inspection on overhead insulated conductors. Its insulation-piercing design allows the contact teeth to penetrate both main and branch conductor insulation simultaneously without stripping, ensuring safe, fast, and secure electrical connections. Suitable for both aluminum and copper ABC conductors, it guarantees precise torque installation via shear-head bolts.
Standard Compliance: NFC 33-020, ANSI C119.5, IEC 61284, EN 50483-4, IRAM2435
Construction & Materials:
Piercing Blades
• Tin-plated high-conductivity copper or aluminium alloy
• Provides reliable, low-resistance piercing contact
Connector Body
• Thermoplastic polyamide 66 (PA66) reinforced with fiberglass
• High mechanical strength, UV-resistant, flame-retardant, and weatherproof
Connecting Bridge
• Tinned copper, tinned brass, or aluminium
• Ensures stable electrical continuity for Cu–Cu, Al–Al, or Cu–Al combinations
Sealing & Environmental Protection
• Flexible PVC sealing caps for complete watertight protection
• Internal silica-gel grease prevents moisture entry and improves long-term reliability
Hardware Assembly
• Bolts: Hot-dip galvanized steel, Grade 8.8
• Washer and Nut: Hot-dip galvanized steel
• Fuse Nut: High-strength zinc alloy for controlled torque shearing
Performance & Reliability
• Rated for 10 kV overhead insulated systems
• UV-resistant, glass-fiber-reinforced polymer body
• Bimetallic contact teeth suitable for both aluminum and copper conductors
• Watertightness tested at 6 kV for 30 minutes under water
• Safe live-line installation using potential-free shear-head bolts
• Corrosion-resistant hardware ensures long-term reliability
• Designed to maintain stable electrical contact under mechanical and thermal stress
Installation Guide (JJCD Grounding Series)
-
Prepare the Conductor
• Ensure the insulated conductor is clean and free from surface contaminants.
• No stripping of insulation is required. -
Open the Clamp
• Loosen the bolts until the conductor can be inserted freely into the connector slot.
• Verify that the earthing ring (for 10 kV models) is properly aligned. -
Insert the Conductor
• Position the main insulated conductor inside the clamp channel.
• Ensure the cable is fully seated and correctly aligned with the piercing blades. -
Tighten the Bolts
• Begin tightening the bolts evenly using a suitable wrench.
• Continue tightening until the shear-head bolts break off automatically, indicating correct torque application. -
Verify Contact and Sealing
• Ensure the clamp is fully closed and the piercing blades have established proper electrical contact.
• Confirm that sealing caps are securely in place to maintain waterproofing. -
Final Safety Check
• Inspect the connection for proper alignment, tightness, and insulation integrity.
• Ensure grounding leads and accessories are attached according to system requirements. -
Commissioning
• Once installation is confirmed, the grounding clamp is ready for operational use in temporary grounding, maintenance work, or system inspection.
JJCD 10 kV Insulation Piercing Grounding Clamp by Telexc is reliable, waterproof, UV-resistant, for ABC lines, safe live-line installation, and long-lasting.









