ASTM F1689-05(2020)
(Test Method)Standard Test Method for Determining the Insulation Resistance of a Membrane Switch (Withdrawn 2023)
Standard Test Method for Determining the Insulation Resistance of a Membrane Switch (Withdrawn 2023)
SIGNIFICANCE AND USE
3.1 Insulation resistance is useful for design verification, quality control of materials, and workmanship.
3.2 Low insulation resistance can cause high leakage currents.
3.3 High leakage currents can lead to deterioration of the insulation or false triggering of the associated input device, or both.
3.4 Specific areas of testing are, but not limited to:
3.4.1 Conductor/dielectric/conductor crossing point.
3.4.2 Close proximity of conductors, and
3.4.3 Any other conductive surface such as shielding or metal backing panel.
3.5 Insulation resistance measurement may be destructive and units that have been tested should be considered unreliable for future use.
SCOPE
1.1 This test method covers the determination of the insulation resistance of a membrane switch.
1.2 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
WITHDRAWN RATIONALE
This test method covers the determination of the insulation resistance of a membrane switch.
Formerly under the jurisdiction of Committee F01 on Electronics, this test method was withdrawn in November 2023. This standard is being withdrawn without replacement because Committee F01 was disbanded.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F1689 − 05 (Reapproved 2020)
Standard Test Method for
Determining the Insulation Resistance of a Membrane
Switch
This standard is issued under the fixed designation F1689; 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 3.4 Specific areas of testing are, but not limited to:
3.4.1 Conductor/dielectric/conductor crossing point.
1.1 This test method covers the determination of the insu-
3.4.2 Close proximity of conductors, and
lation resistance of a membrane switch.
3.4.3 Any other conductive surface such as shielding or
1.2 This standard does not purport to address all of the
metal backing panel.
safety concerns, if any, associated with its use. It is the
3.5 Insulation resistance measurement may be destructive
responsibility of the user of this standard to establish appro-
and units that have been tested should be considered unreliable
priate safety, health, and environmental practices and deter-
for future use.
mine the applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accor-
4. Interferences
dance with internationally recognized principles on standard-
4.1 The following parameters may affect the result of this
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- test:
4.1.1 Humidity,
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. 4.1.2 Contamination,
4.1.3 Barometric pressure, and
2. Terminology
4.1.4 Temperature.
2.1 Definitions:
5. Apparatus
2.1.1 insulation resistance—the electrical resistance be-
tween test points.
5.1 Electric Device, suitable to provide a constant prese-
2.1.2 leakage current—current flow through the insulation lected dc voltage and suitable electronic monitoring device to
measure very small current levels (micro-ampere range), or
between test points.
2.1.3 membrane switch—a momentary switching device in
5.2 Resistance Measuring Device, such as a megohm-meter,
which at least one contact is on, or made of, a flexible or equivalent that can provide a specified voltage. (This would
substrate.
replace 5.1.)
2.1.4 test points—two preselected conductive points in a
6. Procedure—Voltage Source Method (Fig. 1)
circuit loop, possibly including a switch.
6.1 Pretest Setup:
3. Significance and Use
6.1.1 Connect test points of the switch assembly to the
3.1 Insulation resistance is useful for design verification,
voltage source.
quality control of materials, and workmanship.
6.1.2 Connect leakage current measuring device in series
with the voltage source.
3.2 Low insulation resistance can cause high leakage cur-
rents.
6.2 In-Process Test:
6.2.1 Adjust voltage source to 100 VDC 6 10%oras
3.3 High leakage current
...
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F1689 − 05 (Reapproved 2020)
Standard Test Method for
Determining the Insulation Resistance of a Membrane
Switch
This standard is issued under the fixed designation F1689; 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 3.4 Specific areas of testing are, but not limited to:
3.4.1 Conductor/dielectric/conductor crossing point.
1.1 This test method covers the determination of the insu-
3.4.2 Close proximity of conductors, and
lation resistance of a membrane switch.
3.4.3 Any other conductive surface such as shielding or
1.2 This standard does not purport to address all of the
metal backing panel.
safety concerns, if any, associated with its use. It is the
3.5 Insulation resistance measurement may be destructive
responsibility of the user of this standard to establish appro-
and units that have been tested should be considered unreliable
priate safety, health, and environmental practices and deter-
for future use.
mine the applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accor-
4. Interferences
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 4.1 The following parameters may affect the result of this
test:
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 4.1.1 Humidity,
4.1.2 Contamination,
Barriers to Trade (TBT) Committee.
4.1.3 Barometric pressure, and
2. Terminology
4.1.4 Temperature.
2.1 Definitions:
5. Apparatus
2.1.1 insulation resistance—the electrical resistance be-
tween test points.
5.1 Electric Device, suitable to provide a constant prese-
lected dc voltage and suitable electronic monitoring device to
2.1.2 leakage current—current flow through the insulation
between test points. measure very small current levels (micro-ampere range), or
2.1.3 membrane switch—a momentary switching device in 5.2 Resistance Measuring Device, such as a megohm-meter,
which at least one contact is on, or made of, a flexible
or equivalent that can provide a specified voltage. (This would
substrate. replace 5.1.)
2.1.4 test points—two preselected conductive points in a
6. Procedure—Voltage Source Method (Fig. 1)
circuit loop, possibly including a switch.
6.1 Pretest Setup:
3. Significance and Use
6.1.1 Connect test points of the switch assembly to the
3.1 Insulation resistance is useful for design verification,
voltage source.
quality control of materials, and workmanship.
6.1.2 Connect leakage current measuring device in series
with the voltage source.
3.2 Low insulation resistance can cause high leakage cur-
rents.
6.2 In-Process Test:
6.2.1 Adjust voltage source to 100 VDC 6 10 % or as
3.3 High leakage currents can lead to deterioration of the
specified.
insulation or false triggering of the as
...
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