Eaton Cooper Power Series 35 kV / 40.5 kV 3-Core Cold Shrink Waterproof Splice Joint Kit CSPK4033E

Product Specifications

Product Name/Series: Eaton Cooper Power Series Advanced Waterproof Cold Shrink Splice Kit (CSPK4033E)Maximum Rated System Voltage (Um): 40.5 kV Class (Perfectly optimized for standard 26/35 kV, 18/30 kV, and lower medium voltage power transmission networks)

• Lightning Impulse Insulation Withstand: 200 kV Peak Crest Parameters.
• AC Power Frequency 5-Minute Withstand Voltage: 117 kV rms Symmetrical Baseline.
• Minimum Corona/Partial Discharge Level: Checked at strictly < 5 pC (Factory routine screening under < 1 pC thresholds).
• Standard Compliance: Fully certified under IEC 60502.4, GB/T 12706.4, and global quality center type test parameters.

Applicable Cable Layout: Optimized for Three-Phase / 3-Core medium voltage underground utility branching circuits.Cable Cross-Section Accommodations: Accommodates heavy-duty extruded polymeric insulation cables (XLPE/EPR) ranging seamlessly from 185 mm² up to 400 mm².Cable Insulation Outer Diameter (OD) Scope: Precision-calibrated to fit cable cores with an insulation outer diameter of 36.0 mm to 42.4 mm. 

Symmetrical Array & Voltage Configuration Matrix

The Eaton Cooper Power series 35kV/40.5kV cold shrink infrastructure is tightly structured across specialized material compounds to handle extreme subsurface environmental stresses and core dimensions:

• Low-Range Sectional Layouts (25 mm² – 50 mm² / 70 mm² – 120 mm²): Utilizing specialized pre-molded stress relief bodies tailored for light commercial branching loops.
• Mid-to-High Core Layouts (185 mm² – 400 mm²): Engineered with an optimal expansion-to-retraction ratio, providing constant interfacial radial sealing pressure over long-term field operational lifetimes up to 24 months of shelf-life storage.
• Advanced Waterproof Protective Setup (E-Series Combo): Bundled with an outer protection shell and premium polyurethane resin to isolate the internal splices from severe high-vibration heavy railway tunnels and wind field networks.

 

Material & Structural Characteristics

• Imported Liquid Silicone Rubber Compounding: Formulated and molded using ultra-pure liquid silicone polymers that exhibit excellent dielectric strength, superior corona resistance, and extreme chemical aging stability.
• Advanced Trackless Mechanical Expanding Technique: Unique spiral supporting core configuration ensures no physical expansion tracks remain after the core is uncoiled, completely eliminating micro-gap dielectric failure risks.
• Pre-Molded Internal Geometric Stress Relief Profile: ANSYS computer-aided electrical field stress cones pre-molded directly inside the splice body to smoothly neutralize potential high-voltage grid disruptions.
• Ultra-High Hydrophobicity Exterior Surface: Silicone outer skin provides permanent water-beading performance, significantly rising surface flashover voltage thresholds in humid cable vaults.
• UL94 V-0 Rated Flame-Retardant AB Resin: Premium normal-temperature curing dual-group resin featuring an intuitive mixing workflow that guarantees a dense, gap-free, waterproof radial barrier.
• Heavy-Gauge Coffin Box Armour Frame: High Shore D mechanical hardness outer shell prevents termite bites, rodent chewing, and delivers reliable anti-explosion safety protection for nearby equipment.

 

Product Functions

1. Dual-Core Interfacial Potential Balancing: Integrates internal geometric stress cones and semi-conductive inner shielding rings to perfectly balance electrical stresses at the cable screen break point.2. Complete Axial & Radial Hermetic Sealing: High retention expanding memory exerts a continuous 360-degree gripping force on the cable jacket, creating a 100% dust-tight and submersible connection.3. Environmental Armor Isolation Protection: The solidified outer polyurethane matrix establishes a rugged, flame-retardant structural block that resists severe chemical oxidation and long-term water submersion. 

Key Features

1. Fire-Free Cold Quick Field Deployment: Requires zero torch heating, specialised installation gear, or chemical vulcanizing wrapping tapes; minimizes labor complexity in inflammable-proof and explosive-proof underground coal lines.2. Uniform Structural Fluid-Seal Bonding: The specialized AB resin flows smoothly and cures into a compact, integrated coffin box within 2 to 3 hours, offering an ample 40-minute working time window for multi-step jointing.3. Extreme Operational Temperature Tolerance: Maintains persistent mechanical elastic recovery and excellent insulation values under hot cyclical overloads or freezing arctic ground temperatures down to severe winter thresholds.4. 100% Automated Micro-Volt Factory routine-tests: Every single shipping unit undergoes 100% non-destructive automated quality screening including micro-pC partial discharge tests, X-ray fluoroscopic internal checking, and AC withstand verification.