Busbar Insulation and Covers
S1-10 Flame Retardant Busbar Insulation Heat Shrink Tube 6 to 24 kV
Flame retardant busbar insulation available in red yellow green and blue for phase identification up to 24 kV
- Operating temperature: -40 to 105°C
- Minimum full recovery temperature: 125°C
- Voltage class: 6kV to 24kV
- Environmental friendly, RoHS compliant
- Shrink ratio: 2:1 & 2.5:1
- Standard Color: Red, Yellow, Green or Blue
S1-10 · Busbar Insulation and Covers
Product Overview
What S1-10 Does
Environmental friendly flame retardant polyolefin material, can be applied in 6kV to 24kV power switchgear, providing insulation enhancement, protection against flashover or accidental discharge. Especially suitable for switchgear with limited space, it can be used for circular and rectangular copper or aluminum busbars.
Flame retardant busbar insulation available in red yellow green and blue for phase identification up to 24 kV 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
- Four colours so phase identification is built into the insulation
- Flame retardant and RoHS compliant environmentally friendly formulation
- Works on round and rectangular copper and aluminium bar
- 2:1 and 2.5:1 shrink ratios covering a wide bar section range
- Especially suited to switchgear with limited internal space
Who It Is For
Who Benefits Most from S1-10
The buyers and site teams this product was designed around
Switchgear Manufacturers Using Phase Colour Coding
Colour coded busbar makes commissioning and maintenance faster and safer.
Industrial Plant Switchrooms
Sites where phase identification is part of the maintenance procedure.
Marine and Offshore Switchboards
Flame retardant is the normal specification on vessels and platforms.
Utility Kiosk and Package Substations
Compact enclosures where insulated bar is necessary and colour coding helps field crews.
Problems It Solves
Problems This Product Removes
Every one of these is a failure mode we have seen on real networks
Bare Busbar Phases Look Identical
Colour coded insulation removes the guesswork during maintenance and commissioning.
Animal and Condensation Bridging Faults
Insulated bar removes the bridging path that destroys switchboards.
Compact Enclosures Cannot Achieve Air Clearance Alone
Insulating the bar is what allows a small cubicle to pass its withstand test.
Fire Performance Is Specified on Vessels and in Plant
The flame retardant formulation meets the normal marine and industrial requirement.
Application Scenarios
Where It Is Used
Phase Coded Switchgear Busbar
Colour coded main and dropper bars inside a 24 kV cubicle.
Marine Switchboards
Flame retardant colour coded bar on vessels.
Package and Kiosk Substations
Compact enclosures needing insulated bar.
Industrial Motor Control Centres
MV starter and drive panels.
Capacitor and Filter Banks
Bar insulation in tightly packed assemblies.
Technical Data
Specifications and Dimensions
Test methods and requirements taken directly from the manufacturing specification
Technical Data
| Property | Test Method | Requirement |
|---|---|---|
| Specific gravity | ASTM D2671 | 1.1-1.3 |
| Thermal endurance | IEC 216 | 105°C minimum |
| Tensile Strength | ASTM D2671 | ≥10 MPa |
| Ultimate Elongation | ASTM D2671 | ≥300% |
| Heat Aging (136°C/168h) Tensile Strength Ultimate Elongation | ASTM D2671 | ≥8 MPa ≥200% |
| Long-term Heat Aging (100°C/3000h) Ultimate Elongation | IEC 60684-2 | ≥175% |
| Fluid resistance (23°C/168h) Tensile Strength Ultimate Elongation | IEC 60684-2 | ≥8 MPa ≥200% |
| 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 cracking, dripping or flowing |
| Dielectric strength | ASTM D2671 | ≥16 kV/mm |
| Volume resistivity | ASTM D2671 | ≥1.0×1013Ω·cm |
| Flammability | ASTM D2863 | Oxygen index 27 min. |
| Color fastness to light | IEC 60684-3-283 | Color stability, no change |
| Copper corrosion (150°C/168h) | IEC 60684-3-283 | No corrosion |
Dimensions
| Size S1-10 | As supplied (mm) Inner diameter D (min.) | After recovered (mm) Inner diameter d (max.) | Wall thickness t (nom.) | Standard length (m) |
|---|---|---|---|---|
| 25/10 | 25 | 10 | 2.5 | 25 |
| 30/12 | 30 | 12 | 2.7 | 20 / 25 |
| 40/16 | 40 | 16 | 2.7 | 20 / 25 |
| 50/20 | 50 | 20 | 2.7 | 20 / 25 |
| 65/25 | 65 | 25 | 2.9 | 20 / 25 |
| 75/30 | 75 | 30 | 2.9 | 20 / 25 |
| 85/35 | 85 | 35 | 2.9 | 20 / 25 |
| 100/40 | 100 | 40 | 2.9 | 20 / 25 |
| 120/50 | 120 | 50 | 2.9 | 20 / 25 |
| 150/60 | 150 | 60 | 3.0 | 20 / 25 |
| 175/75 | 175 | 75 | 3.0 | 20 / 25 |
| Products Slection | ||||
| Bus Bar Size (mm) | Single Layer Bus Bar | Double Layer Bus Bar | ||
| 20×3, 25×3 | Φ25/10 | Φ30/12 | ||
| 30×3, 30×4 | Φ30/12 | Φ40/16 | ||
| 30×10, 40×4 | Φ40/16 | Φ50/20 | ||
| 40×10, 50×5, 50×6 | Φ50/20 | Φ65/25 (Φ75/30) | ||
| 50×8, 50×10, 60×6, 60×8 | Φ65/25 (Φ75/30) | Φ75/30(Φ85/35) | ||
| 60×10, 80×6, 80×8, 80×10 | Φ75/30(Φ85/35) | Φ100/40(Φ120/50) | ||
| 100×8, 100×10, 100×12 | Φ100/40(Φ120/50) | Φ120/50 | ||
| 150×12, 150×15 | Φ150/60 | Φ175/75 |
CROSS REFERENCE · Tyco-Raychem: BPTM
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 S1-10 Compares
An honest comparison so you can rule this product in or out quickly
| Selection Question | Answer |
|---|---|
| Do you need halogen free | Use S1(n)-10 or S1(n)-35 |
| Do you need phase colours | Use S1-10 or S1-35 |
| Is the class above 24 kV | Use S1(n)-35 or S1-35 |
| Is it a bolted lap joint | Use S1-B molded cover |
Use Guide
How to Select and Install S1-10
The sequence our engineers walk customers through on every first installation
-
01
Assign the Colours First
Decide the phase colour scheme before ordering so the right quantity of each colour arrives.
-
02
Measure the Bar Diagonal
The tube must clear the largest diagonal and recover onto the perimeter.
-
03
Break Every Edge
Sharp corners cut the recovering tube.
-
04
Degrease Before Fitting
Remove oil and oxide so the tube sits on clean metal.
-
05
Shrink from the Centre Outward
Air escapes at both ends and the tube stays square to the bar.
-
06
Cover the Joints
Use S1-B molded lap joint covers on bolted connections.
FAQ
S1-10 Frequently Asked Questions
The questions buyers ask before they place an order
Which colours are available
Is the colour through the wall or only on the surface
Is it halogen free
Can it be used above 24 kV
Does it work on aluminium busbar
Do you supply pre cut lengths
Still need an answer ask our engineers on WhatsApp
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S1-B Lap Joint Cover
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S1 Busbar Tube
The general purpose busbar insulation family covering 1 kV to 35 kV with UL 224 recognition under file E341796
VIEW DETAILSGet a Quotation for S1-10
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