Heat-shrinkable tubes for insulation of copper busbars

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  • lt_cp003.jpg

Product Description

Product introduction

Polyolefin heat shrinkable tube for high voltage copper bars of electric vehicles with rated voltage DC60V-1000V or AC25V-660V. It has the characteristics of good high temperature resistance, elastic recovery, anti-cracking, no choking and so on.

 

Product characteristics

Running temperature : -55℃~125℃

Minimum full-shrinkage temperature: 125 ℃

Shrinkage ratio: 2：1 & 2.5：1 & 3：1

Environmental protection flame retardant, in line with RoHS, ELV

Conform to UL224 E341796

Color: Orange, red, black

 

Specification and size

Product selection

S1-1

 Supply size(mm)

After-shrinkage size (mm)

 Suitable for rectangular busbars(mm) Suitable for round busbars(mm)

Inner diameter

(min)

Wall thickness

(routine)

Inner diameter

(max)

Wall thickness

 L+T D

Shrinkage ratio2:1
12/6 12 0.70±0.20 6.0 1.40±0.20 ≥12 ≤15.5 ≥7.5 ≤10
15/7.5 15 0.70±0.20 7.5 1.40±0.20 ≥15 ≤18.5 ≥9.5 ≤12
18/9 18 0.70±0.20 9.0 1.40±0.20 ≥18 ≤22 ≥10.5 ≤14
20/10 20 0.70±0.20 10.0 1.40±0.20 ≥19 ≤25 ≥13 ≤16
22/11 22 0.70±0.20 11.0 1.40±0.20 ≥22 ≤28 ≥14 ≤18
25/12.5 25 0.70±0.20 12.5 1.40±0.20 ≥26 ≤31 ≥16 ≤20
28/14 28 0.70±0.20 14.0 1.40±0.20 ≥28 ≤35 ≥18 ≤22
30/15 30 0.70±0.20 15.0 1.40±0.20 ≥30 ≤37.5 ≥20 ≤24
35/17.5 35 0.70±0.20 17.5 1.40±0.20 ≥35 ≤44 ≥22 ≤28
40/20 40 0.70±0.20 20.0 1.40±0.20 ≥40 ≤47 ≥26 ≤30
Shrinkage ratio 2.5:1
10/4 10 0.70±0.20 4.0 1.60±0.2 ≥8 ≤12.5 ≥5 ≤8
12/5 12 0.70±0.20 5.0 1.60±0.2 ≥10 ≤15.5 ≥6.5 ≤10
15/6 15 0.70±0.20 6.0 1.60±0.2 ≥12 ≤18.5 ≥7.5 ≤12
20/8 20 0.70±0.20 8.0 1.60±0.2 ≥16 ≤25 ≥10 ≤16
25/10 25 0.70±0.20 10.0 1.70±0.2 ≥19 ≤31 ≥12 ≤20
30/10 30 0.70±0.20 10.0 1.80±0.2 ≥24 ≤37.5 ≥15 ≤24
35/14 35 0.70±0.20 14.0 1.80±0.2 ≥26 ≤44 ≥17 ≤28
Shrinkage ratio 3:1
15/5 15 0.70±0.20 5.0 1.80±0.2 ≥10 ≤18 ≥6 ≤11.5
20/7.5 20 0.70±0.20 7.5 1.80±0.2 ≥14.5 ≤23.5 ≥9 ≤15
25/8.5 25 0.70±0.20 8.5 2.0±0.2 ≥16 ≤30 ≥10 ≤18.8
30/10 30 0.70±0.20 10.0 2.1±0.2 ≥19 ≤35 ≥12 ≤22.5
40/13 40 0.70±0.20 13.0 2.1±0.2 ≥24 ≤47 ≥15 ≤30

 

Technical parameters (Standard NB/T 10328--2019)

property unit demand

Concentricity before shrinkage

 % ≥65

Concentricity after shrinkage

 % ≥85

Length change

 % -5~+5

Tensile strength

 MPa ≥10.4

Elongation at break

 % ≥300

Heat aging {158℃±2℃/168h±2h}

Tensile strength

- Elongation at break

  

MPa

%

  

≥7.3

≥100

Shore hardness

 -- ≤A/15:95

Breakdown Voltage

--Normal temperature

Heat aging  {158℃±2℃/168h±2h}

V

  

≥7000

≥3500

Volume resistivity

 Ω.cm ≥1.0×10

 

Technical parameters (Standard NB/T10328--2019)

property unit demand

Flexibility at low temperature[-55℃±2℃/4h±10min]

--

No cracking

Resistant to rupture after being heated [158*C±2℃/168h±2h]

 --

No cracking
 Thermal shock  [180℃±2℃/4h±10min] --

No dripping, no flow, no cracking

Resistant to rupture after being heated [120℃±2℃/168h±2h]

 --

No dripping, no flow, no cracking

Load deformation [125℃士2℃/60min±5min]

 % ≤50

Temperature change

 -- No cracking

Copper corrosion [158℃士2℃/168h±2h]

 --

No visible black spot or chemical erosion

Flame spreadability

 --

Burning time ≤ 30S, indicating that its bottom cotton will not be ignited.

Water absorption [23℃土2℃/24h±1h]

 % ≤0.5

 

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