Product Name : Zerohalogen Heat-Shrinkable Tubing
Product Introduction

Description :
Raychem zero halogen hot to contract sleeve pipe pass UL test in order to 100%, conform with UL VW-1, 224 norms, UL file number is E35586.

Character :
Divided into two kinds of heavy walls and thin walls, is it able to bear voltage 600V and 300V two to have 125 more heat-resisting, for have now hot to shrink sleeve pipe only zero halogen and in common use UL environmental protection sleeve pipe of authentication.

ZEROHAL ZH2 and ZH4 TubingPolyolefin, Flexible, Heat-Shrinkable, Flame Retarded

  1. scope

    This specification covers the requirements for halogen–free, flexible electrically insulating, extruded tubing whose diameter will reduce to a predetermined size upon the application of heat in excess of 90°C (194°F). The tubing is essentially free of halogens. ZH2, a standard wall, 600 V, 125°C, VW-1 rated, UL recognized tubing meeting the requirements of UL 224. ZH2 also meets the requirements of Standard C22.2 No. 198.1 and is CSA certified. ZH4, a thin wall very flexible, 300 V, 125°C, VW-1 rated, UL recognized tubing meeting the requirements of UL 224. ZH4 also meets the requirements of Standard C22.2 No. 198.1 and is CSA certified with a 150 V rating.

  2. applicable documents

    This specification takes precedence over documents referenced herein. Unless otherwise specified, the latest issue of referenced documents applies. The following documents form a part of this specification to the extent specified herein. 2.1 underwriters laboratories, incorporated

    1. underwriters laboratories, incorporated

      UL Subject 224 Extruded Insulating Tubing (Copies of UL publications may be obtained from Underwriters Laboratories, Inc., 1285 Walt Whitman Road, Melville, Long Island, New York 11746.)

    2. Canadian standards association

      C22.2 No. 198.1 Extruded Insulating Tubing (Copies of CSA publications may be obtained from Canadian Standards Association, 1897 Rexdale Boulevard, Rexdale, Ontario, Canada M9W 1R3.)

    3. other publications

      ISO 846 Plastics-Evaluation of the Action of Microorganisms (Copies of ISO publications may be obtained from the International Organization for Standardization, 1, rue de Varembé, CH-1211 Geneva 20, Switzerland or via the ISO website at www.iso.ch/iso/en/ISOOnline.frontpage) American Society for Testing and Materials (ASTM) ASTM D 2671 Standard Methods of Testing Heat-Shrinkable Tubing for Electrical Use (Copies of ASTM publications may be obtained from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.)

  3. requirements
    1. material

      The tubing shall be essentially halogen free and fabricated from thermally stabilized, flame retarded, modified polyolefin and shall be crosslinked by irradiation. It shall be homogeneous and free from defects, pinholes, bubbles, seams, cracks and inclusions.

    2. properties

      The tubing shall meet the requirements of Table 3.

    3. Color

      The tubing shall be available in black.

  4. quality assurance provisions
    1. classification of tests
      1. Qualification Tests

        Qualification tests are those performed on tubing submitted for qualification as a satisfactory product and shall consist of all tests listed in this specification.

      2. Acceptance Tests

        Acceptance tests are those performed on tubing submitted for acceptance under contract. Acceptance tests shall consist of the following:

        Dimensions

        Longitudinal Change

        Tensile Strength

        Ultimate Elongation

    2. sampling instructions
      1. Qualification Test Samples

        Qualification test samples shall consist of 15 m (50 feet) of tubing of the size and color specified.

        Qualification of the 1 mm size of ZH2 to all properties and the 25 mm size to dimensions and flammability will qualify all sizes of ZH2. Qualification of the 1 mm size of ZH4 to all properties and the 10 mm size to dimensions and flammability will qualify all sizes of ZH4.

      2. Acceptance Test Samples

        Acceptance test samples shall consist of not less than 5 m (16 feet) of tubing selected at random from each lot. A lot shall consist of all tubing of the same size from the same production run and offered for inspection at the same time.

    3. test procedures

      Unless otherwise specified, tests shall be performed on specimens which have been fully recovered by conditioning in accordance with 4.3.1. Prior to all testing, the test specimen (and measurement gauges, when applicable) shall be conditioned for 4 hours at 23 ± 3°C (73 ± 5°F) and 50 ± 5 percent relative humidity. All ovens shall be of the mechanical convection type in which air passes the specimens at a velocity of 30-60 m (100 to 200 feet) per minute.

      1. Dimensions and Longitudinal Change

        Three 150 mm (6 inch) specimens of tubing, as supplied, shall be measured for length, to an accuracy of ± 1 mm (±1/32 inch), and inside diameter in accordance with ASTM D 2671. The specimens then shall be conditioned for 3 minutes in a 200 ± 3°C (392 ± 5°F) oven, removed from the oven, cooled to 23 ± 3°C (73 ± 5°F), remeasured for length, inside diameter and wall thickness in accordance with ASTM D 2671.

        The longitudinal change shall be calculated as follows:
        C = x 100
        Where: C = Longitudinal Change (percent)
        L0 = Length Before Conditioning [mm (inches)]
        L1 = Length After Conditioning [mm (inches)]

      2. Tensile Strength and Ultimate Elongation

        The tensile strength and ultimate elongation of the tubing shall be determined in accordance with ASTM D 2671 using 25 mm (1 inch) bench marks and a 25 mm (1 inch) initial jaw separation. The speed of jaw separation shall be 500 ± 50 mm (20 ± 2 inches) per minute.

      3. Secant Modulus

        The secant modulus of the tubing shall be tested using tubing as supplied in accordance with ASTM D 2671.

      4. Copper Stability

        Three 150 mm (6 inch) specimens of tubing shall be slipped over a snug fitting, straight, clean and bare copper conductor. For tubing sizes 1/4 and smaller, a solid conductor shall be used; for tubing sizes 3/8 and larger, a solid or tubular conductor shall be used. The specimens on the conductors shall be conditioned for 24 hours in a desiccator or similar humidity chamber at 90 to 95 percent relative humidity and 23 ± 3°C (73 ± 5°F). Three specimens shall be conditioned for 7 days in a 158.0 ± 1.0°C (316.4 ± 1.8°F) oven. After conditioning, the specimens shall be removed from the oven and cooled to 23.0 ± 3.0°C (73.0 ± 5.0°F). The copper conductor shall then be removed from the tubing, the tubing and conductor shall then be examined. Darkening of the copper due to normal air oxidation shall not be the cause for rejection. The tubing then shall be conditioned at room temperature for 16 to 96 hours and tested for ultimate elongation in accordance with 4.3.2.

      5. Dielectric Withstand, Breakdown and Strength

        The dielectric strength of the tubing shall be measured under oil in accordance with ASTM D 2671.

        Five 150 mm (6 inch) specimens of tubing shall be recovered over a metal mandrel by conditioning for 3 minutes in a 200 ± 3°C (392 ± 5°F) oven. The mandrel diameter shall be slightly larger than the fully recovered inside diameter of the tubing being tested. The metal mandrel shall serve as one electrode and a 25 mm (1 inch) wide strip of metal foil wrapped around the outside of the tubing as the other electrode. The test voltage shall be applied at a rate of rise of 500 volts per second. Thickness measurements for calculating dielectric strength shall be made adjacent to the point of breakdown. Specimens for dielectric withstand shall be held for 60 seconds at 2500 volts.

      6. Corrosive Effect

        Three specimens of tubing shall be tested for copper contact corrosion in accordance with ASTM D 2671, Procedure B. Three specimens shall be conditioned for 7 days in a 158.0 ± 1.0°C (316.4 ± 1.8°F) oven. After conditioning, the specimens shall be visually examined for evidence of corrosion.

      7. Material Halogen Content

        Determine the halogen content (fluorine, chlorine and bromine) of the tubing by any suitable elemental analysis technique capable of measuring each halogen to +/- 50 ppm or all three halogens together to +/- 100 ppm.

    4. rejection and retest

      Failure of any samples of tubing to conform to any one of the requirements of this specification shall be cause for rejection of the lot represented. Tubing which has been rejected may be replaced or reworked to correct the defect and then resubmitted for acceptance. Before resubmitting, full particulars concerning the rejection and the action taken to correct the defect shall be furnished to the inspector.

  5. preparation for delivery
    1. form

      The tubing shall be supplied on spools, unless otherwise specified.

    2. packaging

      Packaging shall be in accordance with good commercial practice.

    3. marking

      Each container of tubing shall be permanently and legibly marked with the size, quantity, manufacturer's identification, specification number, product designation and lot number.

TABLE 1 ZH2 TUBING DIMENSIONS, METRIC

sizeAs Supplied (mm)As Recovered (mm)
Inside DiameterWall ThicknessInside DiameterWall Thickness
 NominalMaximumMinimum
0.8/0.4 1.2 ± 0.2 0.2 0.4 0.33
1.0/0.5 1.5 ± 0.2 0.2 0.5 0.33
1.5/0.75 2.1 ± 0.2 0.2 0.75 0.34
2.0/1.0 2.6 ± 0.2 0.25 1.0 0.43
2.5/1.25 3.1 ± 0.2 0.25 1.25 0.43
3.0/1.5 3.6 ± 0.2 0.25 1.5 0.43
3.5/1.75 4.1 ± 0.3 0.25 1.75 0.43
4.0/2.0 4.6 ± 0.3 0.25 2.0 0.43
5.0/2.5 5.6 ± 0.3 0.3 2.5 0.56
6.0/3.0 6.6 ± 0.3 0.3 3.0 0.56
7.0/3.5 7.6 ± 0.3 0.3 3.5 0.56
8.0/4.0 8.6 ± 0.3 0.3 4.0 0.56
9.0/4.5 9.6 ± 0.3 0.3 4.5 0.56
10.0/5.0 10.4 ± 0.3 0.3 5.0 0.56
11.0/5.5 11.4 ± 0.3 0.3 5.5 0.56
12.0/6.0 12.7 ± 0.3 0.3 6.0 0.56
13.0/6.5 13.5 ± 0.3 0.35 6.5 0.66
14.0/7.0 14.4 ± 0.4 0.35 7.0 0.68
15.0/7.5 15.7 ± 0.4 0.35 7.5 0.68
16.0/8.0 16.9 ± 0.4 0.35 8.0 0.68
18.0/9.0 19.0 ± 0.4 0.4 9.0 0.76
20.0/10.0 21.4 ± 0.4 0.4 10.0 0.76
22.0/11.0 23.2 ± 0.4 0.45 11.0 0.89
25.0/12.5 26.8 ± 0.4 0.45 12.5 0.89
28.0/14.0 30.0 ± 0.5 0.45 14.0 0.89
30.0/15.0 32.1 ± 0.5 0.45 15.0 0.89

TABLE 2 ZH4 TUBING DIMENSIONS, METRIC

sizeAs Supplied (mm)As Recovered (mm)
0.6/0.3 0.95 ± 0.25 0.1 0.3 0.25
0.8/0.4 1.2 ± 0.25 0.1 0.4 0.25
1.0/0.5 1.4 ± 0.25 0.1 0.5 0.25
1.5/0.75 1.9 ± 0.25 0.1 0.75 0.25
2.0/1.0 2.3 ± 0.25 0.1 1.0 0.25
2.5/1.25 2.8 ± 0.25 0.15 1.25 0.25
3.0/1.5 3.3 ± 0.25 0.15 1.5 0.25
3.5/1.75 3.8 ± 0.25 0.15 1.75 0.25
4.0/2.0 4.4 ± 0.25 0.15 2.0 0.25
5.0/2.5 5.5 ± 0.25 0.15 2.5 0.25
6.0/3.0 6.5 ± 0.4 0.15 3.0 0.28
7.0/3.5 7.5 ± 0.4 0.15 3.5 0.28
8.0/4.0 8.5 ± 0.4 0.15 4.0 0.28
9.0/4.5 9.5 ± 0.4 0.15 4.5 0.28
10.0/5.0 10.5 ± 0.5 0.15 5.0 0.28

TABLE 3 Requirements

PROPERTYUNITREQUIREMENTTEST METHOD
PHYSICAL
Dimensions
mm (inches) In accordance with
Tables 1& 2
Section 4.3.1
ASTM D 2671
Dimensional Recovery
Longitudinal Change
ZH2 - ASTM D 2671
ZH4 - ASTM D 2671
UL 224
Percent
Percent
Percent
+1, -5
+1, -15
+3, -3
Section 4.3.1
ASTM D 2671
ASTM D 2671
UL 224
Eccentricity
(Recovered)
Percent 30 maximum ASTM D 2671
Tensile Strength MPa (psi) 10.3 (1500) minimum Section 4.3.2
Ultimate Elongation Percent 200 minimum ASTM D 2671
Secant Modulus (expanded), 2% MPa (psi) 172 (2.5 x 104) maximum ASTM D 2671
Low Temperature Flexibility
1 hour at -30°C (-22°F)
- No cracking UL 224
Heat Shock
4 hours at 250°C
(482°F)
- No cracking UL 224
Heat Aging
7 days at 158°C
(316°F)
Followed by tests for:
Tensile Strength
Ultimate Elongation
Dielectric Withstand at 2500 V
Dielectric Breakdown
Dielectric Strength
- - UL 224
MPa (psi) 70% minimum of unaged specimens Section 4.3.2
UL 224
Percent 100 minimum
Seconds 60 minimum Section 4.3.5
ASTM D 2671
Volts 50% minimum of unaged specimen
kV/mm
(Volts/mil)
19.7 (500) minimum
Copper Stability
7 days at 158°C (316°F) Followed by
test for
Ultimate Elongation
  No brittleness, glazing, cracking or severe discoloration of tubing. No pitting or blackening of copper. Section 4.3.4
ASTM D 2671
Percent 100 minimum Section 4.3.2
Restricted Shrinkage - Pass UL 224
ELECTRICAL
Dielectric Withstand at 2500 V
Seconds 60 minimum UL 224
Dielectric Strength kV/mm (Volts/mil) 19.7 (500) minimum Section 4.3.5
Volume Resistivity Ohm-cm 1014 minimum ASTM D 2671

TABLE 3 Requirements (continued)

PROPERTYUNITREQUIREMENTTEST METHOD
CHEMICAL (continued)
Corrosive Effect
7 days at 158°C (316°F)
- No Corrosion Section 4.3.6
ASTM D 2671
Halogen Content Percent (ppm) 0.1 (1000) maximum Section 4.3.7
Flammability - Pass UL 224, VW-1
Water Absorption
(Recovered)
24 days at 23°C
(73°F)
Percent 0.5 maximum ASTM D 2671
Fungus Resistance
Followed by tests for:
Tensile Strength
Ultimate Elongation
Dielectric Strength
MPa (psi) percent kV/mm (Volts/mil) 10.3 (1500) minimum
200 minimum
19.7 (500) minimum
ISO 846
Method B
Section 4.3.2
ASTM D 2671
ASTM D 2671