Stress Control and Insulation Tubes
C102-35 Stress Control Heat Shrink Tube up to 36 kV
The 36 kV stress control layer with a dielectric constant of 25 to 50 for 26/35 kV terminations and joints
- Operating temperature: -55 to 105°C
- Minimum fully recovery temperature: 125°C
- Voltage class: 36kV
- Effective electrical stress control
- Single or Dual wall optional
- Shrink ratio: 2.5:1
C102-35 · Stress Control and Insulation Tubes
Product Overview
What C102-35 Does
Stress control heat shrink tube.Electrical stress control protection of power cable termination and joint under 36kV.
The 36 kV stress control layer with a dielectric constant of 25 to 50 for 26/35 kV terminations and joints It is manufactured by Dalian United Polymer Material Co., Ltd. in Dalian China where radiation cross linking extrusion and molding are all performed in house under one quality system.
Key Benefits
- A stress control grade matched specifically to 26/35 (40.5) kV service
- Volume resistivity of 1.0×10⁹ Ω·cm or higher so the layer grades the field without leaking
- Consistent extruded geometry that removes jointer variability at the highest distribution voltage
- Nine sizes from 26/10 mm to 95/45 mm covering the full 35 kV conductor range
- Single wall or adhesive lined dual wall depending on whether sealing is required
Who It Is For
Who Benefits Most from C102-35
The buyers and site teams this product was designed around
35 kV Accessory Kit Assemblers
Kit manufacturers building 26/35 kV terminations who need the higher permittivity grade.
Transmission and Sub Transmission Utilities
Network operators maintaining 33 kV and 35 kV feeder circuits.
Renewable Collector System Contractors
Projects that collect at 33 or 35 kV to reduce losses across a large array.
Heavy Industry Electrical Departments
Mines smelters and process plants operating their own 35 kV distribution.
Problems It Solves
Problems This Product Removes
Every one of these is a failure mode we have seen on real networks
Field Strength at 35 kV Overwhelms a 24 kV Grade Tube
A stress control layer sized for 24 kV does not redistribute the field far enough at 35 kV. C102-35 raises the dielectric constant to 25 to 50 for the higher class.
Longer Overlaps Demand a Thicker Consistent Wall
Recovered wall thickness runs 2.7 to 3.4 mm so the layer keeps its function across the whole overlap length.
Higher Permittivity Can Mean Higher Losses
Loss factor at 50 Hz is held to 1.0 or below at 1000 V so the layer does not heat itself in continuous service.
Mixing 24 kV and 36 kV Stock Causes Field Errors
Clear part number separation between C102-10 and C102-35 prevents a crew fitting the wrong grade.
Application Scenarios
Where It Is Used
35 kV Termination Screen Cut Back
The primary field grading layer in a C35 indoor or outdoor termination.
35 kV Joint Screen Interruption
Field control on both sides of a straight through joint.
Substation Cable Box Terminations
Compact field grading where a stress cone would not fit.
Collector Circuit Terminations
Repeated terminations at solar and wind switching stations.
Laboratory Qualification Samples
Building 35 kV type test specimens.
Technical Data
Specifications and Dimensions
Test methods and requirements taken directly from the manufacturing specification
Technical Data
| Property | Test Method | Requirement |
|---|---|---|
| Tensile Strength | ASTM D2671 | ≥12 MPa |
| Ultimate Elongation | ASTM D2671 | ≥300% |
| Heat Aging (136°C/168h) Tensile Strength Ultimate Elongation | ASTM D2671 | ≥10 MPa ≥250% |
| Water absorption (23°C/24h) | ASTM D2671 | ≤1.0% |
| Low-temperature flexibility (-40°C/4h) | ASTM D2671 | No cracking |
| Heat shock (200°C/4h) | ASTM D2671 | No splitting |
| Volume resistivity | ASTM D2671 | ≥1.0×109 Ω·cm |
| Dielectric constant | IEC 62631-2-1 | 25 to 50 |
| Loss factor(50Hz) | IEC 62631-2-1 | ≤ 1.0 (1000V) |
Dimensions
| Size C102-35 | As supplied(mm) Inner diameter D (min.) | After recovered (mm) Inner diameter d (max.) | Wall thickness t (nom.) | Standard length (m/pcs) |
|---|---|---|---|---|
| 26/10 | 26 | 10 | 2.7 | Spool or ≤1.5 |
| 30/12 | 30 | 12 | 2.8 | Spool or ≤1.5 |
| 35/14 | 35 | 14 | 2.9 | Spool or ≤1.5 |
| 40/16 | 40 | 16 | 3 | Spool or ≤1.5 |
| 47/18 | 47 | 18 | 3 | Spool or ≤1.5 |
| 55/21 | 55 | 21 | 3.1 | ≤1.5 |
| 65/24 | 65 | 24 | 3.2 | ≤1.5 |
| 85/30 | 85 | 30 | 3.4 | ≤1.5 |
| 95/45 | 95 | 45 | 3.2 | ≤1.5 |
CROSS REFERENCE · Tyco-Raychem: JSCR
Manufacturing and Quality
How It Is Made and Checked
Compounding extrusion radiation cross linking expansion and test all under one roof in Dalian
-
01
Compounding
Base polyolefin antioxidants flame retardants and functional fillers are mixed to a recipe held under our own formulation control rather than bought as a masterbatch.
-
02
Extrusion
The compound is extruded to the required wall and diameter. Co extruded products form two or three layers in a single pass so no interface can trap air.
-
03
Radiation Cross Linking
Electron beam irradiation creates the cross linked network that gives the material its shape memory. This step is what makes the product heat shrinkable.
-
04
Expansion
The cross linked part is heated expanded to its supplied diameter and cooled under tension so the expanded shape is locked in until heat is applied again.
-
05
Test and Inspection
More than 90 percent of product performance tests are carried out in our own laboratory including tensile elongation heat aging dielectric strength and tracking resistance.
-
06
Packing and Traceability
Each batch carries a production record so a delivered part can be traced back to its compound lot and process parameters.
Certification
ISO 9001:2015
Quality management system
IATF 16949:2016
Automotive quality management
ISO 14001:2015
Environmental management
ISO 45001:2018
Occupational health and safety
GJB 9001C-2017
Defence quality management
UL 224 E341796
Extruded insulating tubing
CE / RoHS
European conformity and restricted substances
CCS / ABS / DNV
Marine classification society approvals
Comparison
How C102-35 Compares
An honest comparison so you can rule this product in or out quickly
| Grade | Voltage Class | Dielectric Constant | Volume Resistivity |
|---|---|---|---|
| C102-10 | 6 to 24 kV | 10 to 25 | ≥1.0×10¹¹ Ω·cm |
| C102-35 | Up to 36 kV | 25 to 50 | ≥1.0×10⁹ Ω·cm |
Use Guide
How to Select and Install C102-35
The sequence our engineers walk customers through on every first installation
-
01
Confirm the Voltage Class
Use C102-35 only at 26/35 (40.5) kV class. For 24 kV and below use C102-10.
-
02
Prepare a Square Screen Edge
At 35 kV a ragged screen edge is unforgiving. Dress the edge and remove all burrs.
-
03
Set a Generous Overlap
Follow the C35 kit drawing. Overlaps at 35 kV are longer than at 15 kV.
-
04
Remove Every Trace of Semiconductive Material
Any residue on the insulation surface becomes a discharge site at this voltage.
-
05
Shrink from the Screen Outward
Drive trapped air away from the screen interface which is the highest stress point.
-
06
Cover with Insulation
Apply C101 non tracking tube or the kit insulating layers over the stress control tube before the termination is complete.
FAQ
C102-35 Frequently Asked Questions
The questions buyers ask before they place an order
Can I use C102-35 on a 15 kV circuit
Why does the higher grade have lower volume resistivity
What sizes are available
Is adhesive lined dual wall available
How is heat aging performance verified
Do you supply a datasheet for approval submissions
Still need an answer ask our engineers on WhatsApp
Related
Related Products
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MV Kits 26/35 kV
The highest voltage class in the range covering 26/35 (40.5) kV single core and three core cable to 630 mm²
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C106 Tri Layer Tube
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VIEW DETAILSGet a Quotation for C102-35
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