Joints
JC72
Engineered for Excellence in High-Voltage Cable Connections
The JC 72 Connection Joint is a high-performance solution designed for the secure and efficient connection of high-voltage polymeric cables in both onshore and offshore environments. Engineered with precision and built to meet the rigorous demands of modern power infrastructure, the JC 72 ensures long-term reliability, safety, and ease of installation.
Key features
Versatile cable compatibility The JC 72 supports a wide range of conductor types and sizes, including copper and aluminum conductors from 185 mm² to 1200 mm², and is compatible with RM, RE, and class 5 conductors. It accommodates insulation diameters from 39 mm to 78 mm, making it suitable for various cable designs.
Advanced stress control Utilizing a field control method based on geometrically pre-molded silicone rubber, the JC 72 ensures optimal electrical field distribution, reducing stress concentrations and enhancing long-term performance.
Robust electrical performance Tested in accordance with IEC 60840 standards, the JC 72 delivers outstanding electrical reliability:
- AC withstand voltage: 90 kV (30 minutes)
- Impulse withstand voltage: 325 kV
- Partial discharge: < 5 pC at 54 kV
- Rated voltage: 60–69 kV
- Highest voltage: 72.5 kV
- Design voltage to ground: 36 kV
Exceptional short-circuit resistance Designed to handle high fault currents, the JC 72 withstands:
- Thermal short-circuit current (1s): 33.8 kA at 185 mm² Cu
- Dynamic short-circuit current: 107 kA at 185 mm² Cu
Material and construction Crafted from high-quality silicone rubber using precision injection molding, the JC 72 offers excellent mechanical strength, environmental resistance, and long service life. Its compact 1000 mm length and 2 kg weight make it easy to handle and install.
Scope of delivery Each JC 72 kit includes:
- Pre-molded Silicone Rubber Joint Body
- Compatible Compression or Mechanical Shear Bolt Connectors
- All Required Accessories for Installation
- Clear Assembly Instructions
Applications Ideal for high-voltage cable connections in:
- Power transmission and distribution networks
- Offshore wind farms and substations
- Industrial and utility-scale infrastructure
- Harsh environmental conditions requiring robust sealing and protection
Installation and storage
- Installation temperature: –5°C to +50°C
- Storage temperature: +5°C to +40°C (dry, max. 60% RH, non-condensing)
- Expected service life: 40 years
- Installation height: Not limited
- Protection: Rain and dust protected; certified fitters recommended
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The JC 72 Connection Joint is a high-performance solution designed for the secure and efficient connection of high-voltage polymeric cables in both onshore and offshore environments. Engineered with precision and built to meet the rigorous demands of modern power infrastructure, the JC 72 ensures long-term reliability, safety, and ease of installation.
Key features
Versatile cable compatibility The JC 72 supports a wide range of conductor types and sizes, including copper and aluminum conductors from 185 mm² to 1200 mm², and is compatible with RM, RE, and class 5 conductors. It accommodates insulation diameters from 39 mm to 78 mm, making it suitable for various cable designs.
Advanced stress control Utilizing a field control method based on geometrically pre-molded silicone rubber, the JC 72 ensures optimal electrical field distribution, reducing stress concentrations and enhancing long-term performance.
Robust electrical performance Tested in accordance with IEC 60840 standards, the JC 72 delivers outstanding electrical reliability:
- AC withstand voltage: 90 kV (30 minutes)
- Impulse withstand voltage: 325 kV
- Partial discharge: < 5 pC at 54 kV
- Rated voltage: 60–69 kV
- Highest voltage: 72.5 kV
- Design voltage to ground: 36 kV
Exceptional short-circuit resistance Designed to handle high fault currents, the JC 72 withstands:
- Thermal short-circuit current (1s): 33.8 kA at 185 mm² Cu
- Dynamic short-circuit current: 107 kA at 185 mm² Cu
Material and construction Crafted from high-quality silicone rubber using precision injection molding, the JC 72 offers excellent mechanical strength, environmental resistance, and long service life. Its compact 1000 mm length and 2 kg weight make it easy to handle and install.
Scope of delivery Each JC 72 kit includes:
- Pre-molded Silicone Rubber Joint Body
- Compatible Compression or Mechanical Shear Bolt Connectors
- All Required Accessories for Installation
- Clear Assembly Instructions
Applications Ideal for high-voltage cable connections in:
- Power transmission and distribution networks
- Offshore wind farms and substations
- Industrial and utility-scale infrastructure
- Harsh environmental conditions requiring robust sealing and protection
Installation and storage
- Installation temperature: –5°C to +50°C
- Storage temperature: +5°C to +40°C (dry, max. 60% RH, non-condensing)
- Expected service life: 40 years
- Installation height: Not limited
- Protection: Rain and dust protected; certified fitters recommended
Product Information
Further product data, downloads and certificates
Downloads
Downloads
- Data Sheets
- EPD
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