Cable joints are essential components used to ensure continuous electrical conductivity by securely connecting two or more cables. In practice, especially for long cable runs, proper joining systems are indispensable. Yamuna Power provides versatile solutions, addressing varied applications and ensuring seamless power transmission across network segments.
These jointing systems come in diverse formats: Straight Through Joints (for cables of the same type such as XLPE to XLPE or PILC to PILC), and Transition Cable Joints (for connecting dissimilar cables like XLPE to PILC). These are particularly vital for underground installations, functioning reliably even in scenarios of water stagnation.
Types of Cable Joints Offered by Yamuna Power
1. Heat Shrink Cable Joints
Heat shrink joints are designed for applications from 1.1 kV up to 72.5 kV, offering various styles for different cable types and voltage requirements:
- Straight Joints up to 36 kV for XLPE/EPR and PILC cables
- Transition Joints up to 36 kV for XLPE/EPR cables
- Straight Through Joints for single-core XLPE/EPR cables
- Aerial Bunched Cable Joints and 72.5 kV Straight Through variants
These products are built using in-house compounding technology, providing robust defense against electrical stresses like corona discharge and dielectric failure. They operate continuously between −55 °C to 120 °C, are corrosion-resistant, highly impact-durable, and comply with standards such as IEC 60502-4 and IS 13573. Product variants such as the Heat Shrinkable Straight Joint up to 36 kV (suitable for aerial-bunched cables) reflect the same high-performance characteristics.
2. Pre-Moulded Cable Joints
Pre-moulded joints are cold-applied, require no special tools, and deliver consistent radial pressure with built-in stress control. They exhibit exceptional electrical and mechanical strength, making them ideal for challenging environments like tunnels and manholes. Options include designs for 11 kV, 22 kV, and 33 kV XLPE cable systems.
3. Cold Shrink Cable Joints
Cold shrink joints are pre-moulded and pre-expanded rubber connectors that shrink upon release, enabling easy installation without heat or tools. Their features include intrinsic stress cones, weatherproofing, UV resistance, and high electrical performance. These joints meet international standards such as IS 7098, BS 6346, and others, being available for up to 36 kV in both single and multi-core configurations.
Why Cable Joints Are Critical
Cable joints are vital for:
- Maintaining continuity in power and signal transmission
- Facilitating flexibility in cable length segmentation and deployment
- Enhancing reliability, especially under challenging conditions such as water exposure or vibration
Selecting the right type—be it heat shrink, cold shrink, or pre-moulded—depends on the site conditions (environmental risks), operating parameters, voltage level, and cable specifications.
Key Benefits and Strengths of Yamuna Power’s Joints
- Broad Voltage Range: From low tension 1.1 kV systems to high-voltage applications up to 72.5 kV
- Superior Electrical Protection: Built for resistance against tracking, corona, dielectric stress, and more
- Durability: Excellent resistance to corrosion, mechanical damage, impact, moisture, UV radiation, and thermal cycles
- Ease of Installation: Heat shrink requires heating tools; cold shrink and pre-moulded variants simplify or eliminate that need, reducing installation time and errors
- Standards Compliance: All products meet recognized national and international specifications like IEC 60502-4, IS 13573, IS 7098, BS 6346, and more
Reliable Cable Joint Solutions for Every Application
Cable joints are indispensable for forming reliable, efficient, and durable electrical and data links across cable networks. Yamuna Power & Infrastructure Ltd. provides a comprehensive suite of cable joint solutions including heat shrink, cold shrink, and pre-moulded types, each engineered to address different applications, voltage levels, and environmental challenges. With superior materials, engineering precision, and compliance with global standards, Yamuna Power ensures optimized performance and peace of mind for every jointing requirement.
