250A Cable Accessories

Property Specification

Type: 250A Medium-Voltage Cable Accessories / 3-Core Termination & Sealing Kit (6/10 kV & 8.7/15 kV Series)

Features: Fabricated from premium radiation cross-linked polymers that deliver outstanding dielectric strength, flexible flame-retardant performance, and robust resistance to corrosion. Shrinks uniformly under heat to create an airtight, waterproof encapsulation that provides dependable mechanical protection and environmental sealing. Lightweight, highly durable, and engineered for hassle-free field installation, maintaining operational integrity across severe temperature fluctuations (both extreme heat and sub-zero cold). Manufactured under comprehensive 6S quality management systems to guarantee zero-defect reliability.

Applications: Designed for terminating, insulating, and moisture-sealing 6/10 kV and 8.7/15 kV 3-core XLPE-insulated power cables rated up to 250A, as well as electronic wire branch junctions. Widely deployed throughout electrical power distribution grids, petrochemical plants, telecommunications networks, heavy manufacturing facilities, electronic installations, and infrastructure construction projects.

Description

Technical Specifications & Kit Configuration

Technical Parameter / Kit Component Single-Core 3-Core Specification / Application Notes
Outdoor Wet AC Withstand Voltage 35 kV 35 kV Evaluated for 1 min under wet testing conditions
Indoor Dry AC Withstand Voltage 39 kV 39 kV Evaluated for 5 min continuous dry operation
Impulse Withstand Voltage (BIL) 95 kV 95 kV 1.2/50 μs standard surge profile, +10 impulses
Partial Discharge Threshold 10 pC ≤10 pC Screened at 1.73 U0 test potential
Molded Cable Breakout Boot 1 pc Environmental multi-leg branching boot
Stress Relief Sleeves 1 pc 3 pcs High-dielectric field-grading control tube
Primary Insulation Sleeves 1 pc 3 pcs Heavy-wall cross-linked polymeric protective sleeve
External Sealing Tubes 1 pc 3 pcs Moisture-proof outer containment tubing
Single-Core Rain Sheds 2 pcs 6 pcs Anti-tracking creepage skirts (outdoor installations only)
3-Core Trifurcating Rain Shed 1 pc Neck rain shield (outdoor installations only)
Core Identification Sleeves 3 pcs Phase marking color-coded tubes
Sealant & Void-Filling Mastic 1 bag 1 bag Hydrophobic stress-grading filling compound
Braided Copper Ground Wire 1 pc 1 pc Flexible solderless earthing connection
Constant-Pressure Clamping Springs 1 pc 2 pcs Mechanical roll springs for secure braid retention
Dielectric Lubricant Grease 1 bag 1 bag Interface silicone compound for void elimination
Cable Stripping Knife 1 pc 1 pc Insulation and outer sheath trimming tool
Abrasive Preparation Strips 2 pcs 3 pcs Non-conductive sanding paper for surface abrasion
Installer Safety Gloves 2 pairs 2 pairs Clean handling protective gloves
Solvent Surface Cleaning Wipes 2 pkts 3 pkts Fast-drying, residue-free degreasing towels
Conductor Alignment Wedge 1 pc Phase separation and positioning cone
Step-by-Step User Manual 1 pc 1 pc Detailed field assembly guide