ASTM F1742-03(2011)
(Specification)Standard Specification for PVC Insulating Sheeting
Standard Specification for PVC Insulating Sheeting
SCOPE
1.1 This specification covers acceptance testing of Poly Vinyl Chloride insulating sheeting for use as a covering for protection of workers.
1.2 The following safety hazards caveat applies only to the test method portion, Sections 17-19, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See 18.1 for a specific warning statement.
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Designation:F1742 −03 (Reapproved 2011)
Standard Specification for
PVC Insulating Sheeting
This standard is issued under the fixed designation F1742; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This specification covers acceptance testing of Poly 3.1 Definitions:
Vinyl Chloride insulating sheeting for use as a covering for 3.1.1 voltage, maximum use—the ac voltage (rms) classifi-
protection of workers. cation of the protective equipment that designates the maxi-
mum nominal design voltage of the energized system that may
1.2 The following safety hazards caveat applies only to the
be safely worked. The nominal design voltage is equal to
test method portion, Sections 17-19, of this specification:This
phase-to-phase voltage on multiphase circuits.
standard does not purport to address all of the safety concerns,
3.1.1.1 Discussion—If there is no multiphase exposure in a
if any, associated with its use. It is the responsibility of the user
system area, and the voltage exposure is limited to phase
of this standard to establish appropriate safety and health
(polarityondcsystems)togroundpotential,thephase(polarity
practices and determine the applicability of regulatory limita-
ondcsystems)togroundpotentialshallbeconsideredtobethe
tions prior to use.See 18.1 for a specific warning statement.
nominal design voltage.
3.1.1.2 Discussion—If electrical equipment and devices are
2. Referenced Documents
insulated, or isolated, or both, such that the multiphase expo-
2.1 ASTM Standards:
sure on a grounded wye circuit is removed, then the nominal
D149 Test Method for Dielectric Breakdown Voltage and
design voltage may be considered as the phase-to-ground
DielectricStrengthofSolidElectricalInsulatingMaterials
voltage on that circuit.
at Commercial Power Frequencies
3.1.2 voltage, nominal design—a nominal value consistent
D412 Test Methods forVulcanized Rubber andThermoplas-
with the latest revision of ANSI C84.1, assigned to the circuit
tic Elastomers—Tension
or system for the purpose of conveniently designating its
D570 Test Method for Water Absorption of Plastics
voltage class.
D747 Test Method for Apparent Bending Modulus of Plas-
tics by Means of a Cantilever Beam
4. Significance and Use
D1004 Test Method for Tear Resistance (Graves Tear) of
4.1 This specification covers the minimum electrical and
Plastic Film and Sheeting
physical properties guaranteed by the manufacturer and the
D1048 Specification for Rubber Insulating Blankets
detailed procedures by which such properties are to be deter-
D1746 Test Method for Transparency of Plastic Sheeting
mined. The purchaser may at his option perform or have
D2240 Test Method for Rubber Property—Durometer Hard-
performed any of these tests in order to verify the guarantee.
ness
Claims for failure to meet the specification are subject to
2.2 American National Standard:
verification by the manufacturer.
ANSI C84.1 Voltage Ratings for Electric Power Systems
NOTE 1—This material is intended for a single use application.
and Equipment (60 Hz)
4.2 The safe and proper field use of PVC sheeting is beyond
the scope of this specification.
4.2.1 When authorizing use of PVC sheeting for personal
This specification is under the jurisdiction of ASTM Committee F18 on
protection, a margin of safety should be allowed between the
Electrical Protective Equipment for Workers and is the direct responsibility of
maximum voltage at which it is used and the proof-test voltage
Subcommittee F18.25 on Insulating Cover-Up Equipment.
Current edition approved May 1, 2011. Published June 2011. Originally at which it is tested. The relationship between proof-test and
´01
approved in 1996. Last previous edition approved in 2003 as F1742– 03 . DOI:
the maximum voltage at which sheeting shall be used is shown
10.1520/F1742-03R11.
in Table 1.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on 5. Classification
the ASTM website.
5.1 PVCinsulatingsheetingcoveredunderthisspecification
Available from American National Standards Institute, 11 West 42nd St., 13th
Floor, New York, NY 10036. shall be designated as Class 0 or Class 1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1742−03 (2011)
TABLE 1 Proof Test/Use Voltage Relationship TABLE 3 DC Voltage Requirements
Dielectric
Electrode Clearances
NOTE 1—The ac voltage (rms) classification of the protective equip-
Proof Test
A Breakdown
Min
ment designates the maximum nominal design voltage of the energized
Class Voltage
Test Voltage
avg V
systemthatmaybesafelyworked.Thenominaldesignvoltageisequalto:
mm in.
avg V
(a) The phase to phase on multiphase circuits, or
0 76 3 8500 17 000
(b) The phase to ground voltage on single phase grounded circuits.
1 76 3 17 000 44 000
A
Maximum Use
These nominal clearances are intended to avoid flashover and may be
Class of Insulating AC Proof-Test DC Proof-Test
A
Voltage Phase-
increased from the standard of 100 kPa (1 atm) barometric pressure and average
Sheeting Voltage, rms V Voltage, avg V
Phase ac rms, max
humidity by no more than 51 mm (2 in.) when required by change in atmospheric
0 1000 5000 8500
conditions.These clearances may be decreased if atmospheric conditions permit.
1 7500 10 000 17 000
A
Except for class 0 equipment, the maximum AC use voltage is based on the
following formula: Maximum use voltage (maximum nominal design voltage) =
value) specified in Table 3. The test voltage shall be applied
0.95 ac proof-test voltage-2000.
continuously for 1 min.
9.2 The sheeting material when tested between 51-mm
(2-in.) disk electrodes with edges rounded to a radius of 6 mm
5.1.1 The class designation shall be based on the electrical
(0.25 in.), shall show a 60-Hz dielectric strength of not less
properties as shown in Table 2 or Table 3.
than the requirements shown in Table 2 or Table 3 for the
thickness of each individual specimen.
6. Ordering Information
10. Dimensions and Permissible Variations
6.1 Orders for PVC insulating sheeting under this specifi-
cation should include the following information:
10.1 Width—Standard widths shall be 1220 6 25 mm (48 6
6.1.1 Class, 1 in.). Other widths may be negotiated with the manufacturer.
6.1.2 Thickness,
10.2 Thickness—The thickness of the sheeting shall be as
6.1.3 Width, and
specified in Table 5.
6.1.4 Length.
11. Workmanship and Finish
7. Manufacture and Marking
11.1 The sheeting shall be smooth and uniform and free of
7.1 The insulating sheet shall consist of a clear PVC
harmful physical irregularities, which can be detected by a
compound with a smooth, polished finish on each surface (see
thorough test or inspection.
Fig. 1).
11.1.1 Nonharmful Irregularities—Flow marks may be
present on all PVC sheeting due to inherent difficulties in the
7.2 Each piece of sheeting shall be marked clearly and
manufacturing process. These irregularities may appear as
permanently at a maximum interval of1m(3ft) with the name
waves in the sheeting which are acceptable provided that the
of the manufacture or supplier, ASTM D and class.
sheeting thickness at any irregularity conforms to the thickness
8. Physical Requirements requirements of Table 5.
8.1 Insulating sheeting shall conform to the physical re-
12. Guarantee
quirements in Table 4.
12.1 The manufacturer or supplier shall replace, without
8.2 PVC insulating sheeting should remain flexible for use
charge to the purchaser, unused sheeting which at any time
through normal temperature ranges.
within a period of nine months from date of initial delivery of
shipment to the purchaser or his designee, fail to pass the tests
8.3 PVC insulating sheeting is clear but may be tinted to aid
in this specification. This guarantee will be binding on the
in visual identification.
manufacturer or supplier only if the sheeting has been properly
9. Electrical Requirements stored and has not been subjected to more than an original
acceptance test and one retest.
9.1 The entire length of each roll of sheeting when new
(unused) shall withstand the 60-Hz ac proof-test voltage (rms 12.2 Any acceptance test made by the purchaser or the
value) specified in Table 2 or the dc proof-test voltage (avg
purchaser’s designee, shall be performed within the first two
months of the guarantee period unless otherwise specified.
NOTE 2—Proper storage means that the sheeting is stored without
TABLE 2 AC Voltage Requirements
distortion and not stored directly above or in proximity to steam pipes,
Dielectric
Electrode Clearances
Proof Test radiators, or other sources of artificial heat, or exposed to direct sunlight.
A Breakdown Test
Min
Class Voltage It is desirable that the ambient storage temperature shall not exceed 35°C
Voltage
rms V
mm in. (95°F).
rms V
0 76 3 5000 10 000
13. Sampling
1 76 3 10 000 20 000
A
These nominal clearances are intended to avoid flashover and may be 13.1 Each roll of sheeting in a lot or shipment shall be
increased from the standard of 100 kPa (1 atm) barometric pressure and average
subject to inspection and test by the manufacturer including
humidity by no more than 51 mm (2 in.) when required by change in atmospheric
electrical proof test to levels required in Table 2 or Table 3 of
conditions.These clearances may be decreased if atmospheric conditions permit.
this specification.
F1742−03 (2011)
FIG. 1PVC Insulating Sheeting
TABLE 4 Physical Requirements
14.3 Thetestingshallbeterminatedandthemanufactureror
Tensile strength, min, MPa (psi) 2600 supplier notified if, during the course of testing, 5 % or more,
Elongation, min, % 300
but not less than two rolls, of the sheeting in a lot or shipment,
A
Moisture absorption, max increase, % 0.30
fail to meet the requirements of 9.1 or 9.2 as determined by the
Hardness, max shore A 90
B
Specular transmission, min, % 75 rejection criteria of 14.1, 14.2, 14.2.1, 14.2.2 or 14.2.3. The
Tear resistance, min, lbf/in. 575
manufacturer or supplier may in such a case require the
Stiffness, max, psi 25 000
purchaser to submit proof that the test procedure and equip-
20°F
−7°C ment conform to the appropriate paragraphs of Section 18.
Puncture resistance, min, lbf/in. 900
When such proof has been furnished, the manufacturer or
A
Distilled water − 23°C (75°F).
supplier may request that his representative witness the testing
B
550 nm.
of additional rolls from the shipment.
14.4 The entire lot or shipment of sheeting may be rejected
TABLE 5 Thickness Measurements at the option of the purchaser if two of the five specimens
tested fail any of the separate requirements outlined in Section
Thickness Tolerance
Class
mm in. mm in.
8.
0 1.02 0.040 0.12 ±0.005
1 1.02 0.040 0.12 ±0.005 14.5 The entire lot or shipment of sheeting may be rejected
at the option of the purchaser if 25 % of the sheeting in the lot
or shipment fail to meet the requirements of Section 10 or 11.
13.2 An original sample of sufficient material shall be cut
14.6 All rejected material shall be returned unaltered except
from the end of a roll or rolls selected from the lot for the test
as required for sampling, as directed by the manufacturer at his
requirements of Sections 9and 8. A lot is defined as that
or the supplier’s request. Those sheets punctured when tested
quantity of material produced by a common manufacturing
in accordance with 9.1 or 9.2, however, shall be stamped,
process during a consecutive time period not to exceed 24 h. If
punched, or cut prior to being returned to the supplier to
failure occurs in the first sample, a second sample of the same
indicate that they are unfit for electrical use.
quantity shall be selected and tested.
15. Packaging
14. Rejection
15.1 Sheeting shall be packaged in rolls and shall not be
14.1 Individual rolls shall be rejected if they fail to meet the
distorted mechanically (see Fig. 1).
manufacturing and marking requirements of Section 7, the
electrical requirements of 7, the width requirements of 10.1,
16. Thickness Measurements
the minimum thickness requirements of 10.2, or the workman-
16.1 Thickness measurements should be made on complete
ship requirements of Section 11.
sheeting samples with a caliper graduated to within 0.03 mm
14.2 The entire lot or shipment of sheeting shall be rejected
(0.001 in.).At least five thickness measurements shall be made
under any of the following conditions:
at selected points uniformly distributed over the test area of the
14.2.1 If 5 % or more, but not less than two rolls of the
sheeting.
sheeting in a shipment fail to meet the requirements of 9.1.
14.2.2 If two dielectric breakdowns that do not meet the TEST METHODS
dielectric strength value specified in 9.2 occur in five tests on
17. Sequence of Testing
the specimen.
14.2.3 If one dielectric breakdown of five tests on the 17.1 The following order of procedure is suggested for
original and one or more dielectric breakdowns of five tests on testing PVC insulating sheeting.
anadditionalspecimenfailtomeetthedielectricstrengthvalue 17.1.1 Inspection of the surfaces in accordance with Section
specified in 9.2. 11.
F1742−03 (2011)
17.1.2 The dimensions in accordance with Sections 10 and 18.2.2.4 The crest factor may be checked by the use of a
16. peak-reading voltmeter connected directly across the high-
17.1.3 Electrical proof test in accordance with the appropri- voltagecircuit.Ifanelectrostaticvoltmeteroranrmsvoltmeter
ate paragraphs of Section 18. in conjunction with an instrument potential transformer is
17.1.4 Breakdown voltage test in accordance with the ap- connected across the high-voltage circuit, a standard sphere
propriate paragraphs of Section 18. gap may be sparked over and the corresponding voltage
17.1.5 Physical property tests in accordance with 19. compared with the reading of the rms voltmeter.
18.2.3 Test—The proof-test voltage initially shall be applied
18. Electrical Tests at a low value, and then gradually increased at a constant
rate-of-rise of approximately 1000 V/s ac until the prescribed
18.1 Conditioning— Prior to testing, the sheeting shall be
test voltage level is reached or failure occurs. The test period
placed in a flat position. (Warning—It is recommended that
starts at the instant that the prescribed testing voltage is
the test apparatus be designed to afford the operator full
reach
...
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