ASTM F712-06
(Test Method)Standard Test Methods and Specifications for Electrically Insulating Plastic Guard Equipment for Protection of Workers
Standard Test Methods and Specifications for Electrically Insulating Plastic Guard Equipment for Protection of Workers
SCOPE
1.1 These test methods cover three electrical tests on plastic guards and assembled guard systems. They are:
1.1.1 Method A - Withstand voltage proof test,
1.1.2 Method B - Flashover voltage, and
1.1.3 Method C - Leakage current.
1.1.4 This specification covers plastic guard equipment and guard systems used by workers for temporary insulation on electric power circuits.
1.1.5 Plastic guard equipment covered by this specification is rated for momentary, or brush contact only. Maximum-use voltages are covered in Table 1 and Table 2.
1.2 These test methods cover, but are not limited to, the following typical guards:
1.2.1 Conductor Guards and Connecting Covers as followsLine guards,
Line guard connectors,
Insulator covers,
Dead-end covers,
Bus guards, and
Bus "T" guards.
1.2.2 Structure and Apparatus Covers as follows Pole guards,
Ridge pin covers,
Switch blade covers,
Arm guards,
Cutout covers,
Structural barriers, and
Cross arm guard.
1.3 It is common practice for the user of this equipment to prepare instructions for the correct use and maintenance.
1.4 The use and maintenance of this equipment is beyond the scope of these test methods.
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.
1.5 The values stated in inch-pound units are to be regarded as the standard.
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Standards Content (Sample)
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Designation: F712 – 06
Standard Test Methods and Specifications for
Electrically Insulating Plastic Guard Equipment for
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Protection of Workers
ThisstandardisissuedunderthefixeddesignationF712;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 Thesetestmethodscoverthreeelectricaltestsonplastic
bility of regulatory limitations prior to use.
guards and assembled guard systems. They are:
1.6 Thevaluesstatedininch-poundunitsaretoberegarded
1.1.1 Method A—Withstand voltage proof test,
as the standard.
1.1.2 Method B—Flashover voltage, and
1.1.3 Method C—Leakage current.
2. Referenced Documents
1.1.4 This specification covers plastic guard equipment and
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2.1 ASTM Standards:
guard systems used by workers for temporary insulation on
D149 Test Method for Dielectric Breakdown Voltage and
electric power circuits.
Dielectric Strength of Solid Electrical Insulating Materials
1.1.5 Plastic guard equipment covered by this specification
at Commercial Power Frequencies
is rated for momentary, or brush contact only. Maximum-use
D256 Test Methods for Determining the Izod Pendulum
voltages are covered in Table 1 and Table 2.
Impact Resistance of Plastics
1.2 These test methods cover, but are not limited to, the
D570 Test Method for Water Absorption of Plastics
following typical guards:
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2.2 IEEE Standard:
1.2.1 Conductor Guards and Connecting Covers as follows:
IEEE 978 Guide for In-Service Maintenance and Electrical
1.2.1.1 Line guards,
Testing for Live-Line Tools
1.2.1.2 Line guard connectors,
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2.3 ANSI Standard:
1.2.1.3 Insulator covers,
C39.5 Safety Requirements for Electrical and Electronic
1.2.1.4 Dead-end covers,
Measuring and Controlling Instrumentation
1.2.1.5 Bus guards, and
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2.4 UL Standard:
1.2.1.6 Bus “T” guards.
94 Tests for Flammability of Plastic Materials for Parts in
1.2.2 Structure and Apparatus Covers as follows:
Devices and Appliances
1.2.2.1 Pole guards,
1.2.2.2 Ridge pin covers,
3. Terminology
1.2.2.3 Switch blade covers,
3.1 Definitions of Terms Specific to This Standard:
1.2.2.4 Arm guards,
3.1.1 insulating plastic guards—devices for temporary in-
1.2.2.5 Cutout covers,
stallation on structures or energized electric power circuits for
1.2.2.6 Structural barriers, and
electrical protection of personnel or equipment, or both.
1.2.2.7 Cross arm guard.
3.1.2 self extinguishing—relates to a property of a plastic
1.3 It is common practice for the user of this equipment to
materialcompoundedsoastoceasecombustiononremovalof
prepare instructions for the correct use and maintenance.
the source that caused ignition.
1.4 The use and maintenance of this equipment is beyond
the scope of these test methods.
1.5 This standard does not purport to address all of the 2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
safety concerns, if any, associated with its use. It is the
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
the ASTM website.
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These test methods are under the jurisdiction of ASTM Committee F18 on Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
Electrical Protective Equipment for Workers and are the direct responsibility of 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331, http://www.ieee.org.
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Subcommittee F18.25 on Insulating Cover-Up Equipment. Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Current edition approved Nov. 15, 2006. Published January 2007. Originally 4th Floor, New York, NY 10036, http://www.ansi.org.
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approvedin1981.Lastpreviouseditionapprovedin2000asF712–88(2000).DOI: Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., North-
10.1520/F0712-06. brook, IL 60062-2096, http://www.ul.com.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F712 – 06
A
TABLE 1 Withstand Voltage Proof Test
4.4 Work practices vary from user to user, dependent upon
Class Rating, Max Use Proof Test Withstand Voltage many factors. These may include, but are not limited to,
kV 60 Hz (in-service testing)
operating system voltages, construction design, work proce-
Criteria
Duration,
A dure techniques, weather conditions, etc.Therefore, except for
0-0 0-Ground 0-Ground kV
min
the restrictions set forth in this specification because of design
60 Hz DC
limitations, the use and main
...
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