ASTM-F855 2009

$44.96

F855-09 Standard Specifications for Temporary Protective Grounds to Be Used on De-energized Electric Power Lines and Equipment

Published By	Publication Date	Number of Pages
ASTM	2009	19

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Categories: 29.120.50 - Fuses and other overcurrent protection devices, ASTM

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Description

ASTM F855-09

Historical Standard: Standard Specifications for Temporary Protective Grounds to Be Used on De-energized Electric Power Lines and Equipment

ASTM F855

Scope

1.1 These specifications cover the equipment making up the temporary grounding system used on de-energized electric power lines, electric supply stations, and equipment.

1.2 It is common practice for the users of protective grounding equipment to prepare complete instructions and regulations to govern in detail the correct use and maintenance of such equipment.

1.3 The uses and maintenance of this equipment are beyond the scope of these specifications.

1.4 These specifications for a system of protective grounding utilizing copper cables are covered in four parts, as follows:

1.5 Each of the four parts is an entity of itself, but is listed as a part of the system for completeness and clarification.

1.6 Currents presented in Table 1 are based upon cable melting times, as determined from equations by I. M. Onderdonk and are to used in situations involving an asymmetry value less than 20 % (X/R ≤ 1.8). See Appendix X3.

1.6.1 Currents presented in Table 2 are based upon the values from EPRI Project RP2446 Computer Program RTGC “A Desktop Computer Program for Calculating Rating of Temporary Grounding Cables” and are to be used in situations involving an asymmetry value greater then 20 % (X/R ≧ 1.8), see Appendix X4.

Note 1—Table 1 represents the clamp and assembly ratings that existed prior to this revision. Table 2 represents new ratings now required for high X/R situations.

1.6.2 See Appendix X3 and Appendix X4 for a discussion of these topics.

1.7 The values stated in Newton-Meter units are to be regarded as the standard. The values in parentheses are the inch-pound units.

1.8 The following precautionary caveat pertains to the test method portions, Sections 12 and 25 of these specifications: 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.

Keywords

Current measurement; Electrical insulating materials–specifications; Electrical power systems–specifications; Electrical protective equipment–specifications; Grounding; Protective grounds; Temporary grounding systems

ICS Code

ICS Number Code 29.120.50 (Fuses and other overcurrent protection devices)

DOI: 10.1520/F0855-09

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology TABLE 1 TABLE 2
3	Scope Classification Sizes Ordering Information Materials Electrical and Mechanical Properties
4	Workmanship, Finish, and Appearance Sampling Design Tests TABLE 3
5	Inspection and Product Testing Acceptance, Rejection, and Rehearing Certification Packaging and Package Marking Scope FIG. 1
6	Classification Size Ordering Information Materials Electrical and Physical Properties TABLE 4
7	Workmanship, Finish, and Appearance Sampling Design Tests TABLE 5
8	Inspection Acceptance, Rejection, and Rehearing Certification Product Marking Packaging Scope Classification Size Ordering Information TABLE 6
9	Materials Workmanship, Finish, and Appearance Sampling Tests Protective Cable Ratings TABLE 7
10	Scope Classification FIG. 2
11	Sizes Ordering Information Materials Electrical and Mechanical Properties Workmanship, Finish, and Appearance FIG. 3 FIG. 4
12	Sampling FIG. 5 FIG. 6 FIG. 7 FIG. 8
13	Design Tests Inspection and Production Testing Acceptance, Rejection, and Rehearing FIG. 9
14	Certification Packaging and Package Marking FIG. 10
15	X1. MANUFACTURE OF GROUNDING CABLE X1.1 X1.2 X1.3
16	X2. COMMENTARY X2.1 X2.2 X2.3 X3. DISCUSSION OF CABLE FUSING X3.1 X3.2 X4. EFFECT OF ASYMMETRICAL CURRENTS ON TEMPORARY PROTECTIVE GROUNDING EQUIPMENT X4.1 X4.2
17	X4.3 X4.4 X4.5 X4.6 X4.7 FIG. X4.1
18	X5. TESTING FOR MULTIPLE ASSEMBLIES X5.1 X5.2 FIG. X4.2

Additional information


Ferrules for Temporary Protective Grounds
Protective Grounds (Complete Assembly With Clamps, Ferrules, and Cable)
Cables for Temporary Protective Grounds
Clamps for Temporary Protective Grounds
ICS Codes	29.120.50 - Fuses and other overcurrent protection devices