ASTM D4388-97

Standard Specification for Nonmetallic Semi-Conducting and Electrically Insulating Rubber Tapes

SCOPE
1.1 This specification covers nonmetallic semi-conducting and electrical insulating tapes designed for the splicing and repair of electrical wire and cables operating at voltages up to 325 kV, phase to phase.
1.2 The SI values are the standard. The values stated in inch-pound units given in parentheses are for information purposes only.

General Information

• Status: Historical
• Publication Date: 09-Mar-2002
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: D09 - Electrical and Electronic Insulating Materials
• Drafting Committee: D09.07 - Electrical Insulating Materials

Relations

• Replaced By: ASTM D4388-02 - Standard Specification for Nonmetallic Semi-Conducting and Electrically Insulating Rubber Tapes
• Effective Date: 10-Mar-2002
• Referred By: ASTM D4325-20 - Standard Test Methods for Nonmetallic Semi-Conducting and Electrically Insulating Rubber Tapes
• Effective Date: 10-Mar-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 4388 – 97
Standard Specification for
Nonmetallic Semi-Conducting and Electrically Insulating
Rubber Tapes
This standard is issued under the fixed designation D 4388; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3.1.3 Type III—A high voltage, ozone-resistant, rubber in-
sulating tape designed for use with wires and cables operating
1.1 This specification covers nonmetallic semi-conducting
up to 138 000 V phase to phase in either wet or dry locations
and electrical insulating tapes designed for the splicing and
with conductor temperatures up to 90°C (194°F) for continu-
repair of electrical wire and cables operating at voltages up to
ous operation, up to 130°C (266°F) for emergency overload
325 kV, phase to phase.
conditions, and up to 250°C (482°F) for short-circuit condi-
1.2 The values stated in inch-pound units, except for° C, are
tions when installed in accordance with the manufacturer’s
the standard. The SI values given in parentheses are for
instructions. This tape is suitable for wet or dry outdoor use.
information purposes only.
Apply the tape to the wire or cable within an ambient
2. Referenced Documents temperature range of − 10 and 40°C (14 and 104°F).
3.1.4 Type IV—A nonmetallic semi-conducting tape de-
2.1 ASTM Standards:
signed for shielding various portions of joints and terminations
D 4325 Test Methods for Nonmetallic Semi-Conducting
in electrical wires and cables operating at any voltage under
and Electrically Insulating Rubber Tapes
wet or dry conditions with conductor temperatures up to 90°C
3. Classification
(194°F) for continuous operation, or up to 130°C (266°F) for
emergency overload conditions. This tape is suitable for wet or
3.1 Types:
dry outdoor use. Apply the tape to the wire or cable within an
3.1.1 Type I—A low voltage rubber insulating tape designed
ambient temperature range of − 10 and 40°C (14 and 104°F).
for use on wires and cables operating up to 2000 V phase to
3.1.5 Type V—A higher voltage, ozone-resistant, rubber
phase in dry locations with conductor temperatures up to 80°C
insulating tape designed for use with wires and cables operat-
(176°F) for continuous operation, up to 95°C (203°F) for
ing up to 325 000 V phase to phase in either wet or dry
emergency overload conditions, and up to 150°C (302°F) for
locations with conductor temperatures up to 90°C (194°F) for
short-circuit conditions. For outdoor use, protect the tape from
continuous operation, up to 130°C (266°F) for emergency
ozone attack and ultraviolet radiation by the use of a suitable
overload, and up to 250°C (482°F) short-circuit conditions
overwrap. Apply the tape to the wire or cable within an
when installed in accordance with the manufacturer’s instruc-
ambient temperature range of − 10 and 40°C (14 and 104°F).
tions. This tape is suitable for wet or dry outdoor use. Apply the
3.1.2 Type II—A medium voltage, ozone-resistant, rubber
tape to the wire or cable within an ambient temperature of − 10
insulating tape designed for use with wires and cables operat-
and 40°C (14 and 104°F).
ing up to 35 000 V phase to phase in either wet or dry
locations with conductor temperatures up to 90°C (194°F) for
4. Physical Properties
continuous operation, up to 130°C (266°F) for emergency
4.1 The tape shall consist of a non-crosslinked or partially
overload conditions, and up to 250°C (482°F) for short-circuit
crosslinked rubber nonmetallic semi-conducting or insulating
conditions when installed in accordance with the manufactur-
compound. The compound shall be well, evenly, and smoothly
er’s instruction. For wet or dry outdoor use, protect the tape
processed, cut to the specified widths, and tightly wound in
from ultraviolet radiation by the use of a suitable overwrap.
rolls with a separator between layers. Where a non-removable
Apply the tape to the wire or cable within an ambient
separator is used, the separator will be considered an integral
temperature range of − 10 and 40°C (14 and 104°F).
part of the tape.
4.2 The separator shall be parchment paper, glazed or
This specification is under the jurisdiction of ASTM Committee D-9 on
plastic sheeting, or any suitable material interposed between
Electrical and Electronic Insulating Materials and is the direct responsibility of
adjacent layers. The removable or non-removable separator
Subcommittee D09.07 on Flexible and Rigid Insulation Materials.
shall not interfere with the use of the roll during application.
Current edition approved April 10, 1997. Published February 1998. Originally
published as D 4388 — 84. Last previous edition D 4388 – 91.
Where a removable separator is used, the separator shall be
Annual Book of ASTM Standards, Vol 10.02.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
D 4388
TABLE 1 Physical Properties for Rubber Insulating Tape
Requirements Type I Type II Type III Type IV Type V
Tensile strength, min, psi (MPa) 250 (1.7) 250 (1.7) 250 (1.7) >100 (0.69) 350 (2.4)
Elongation at break, min, % 300 500 700 300 700
Dielectric strength, min, V/mil (kV/mm):
0.020 in. (0.51 mm) thickness . . 700 (28) . 800 (32)
0.030 in. (0.76 mm) thicknes
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