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GB/T 17949.1-2000Guide for measuring earth resistivity, ground impedance, and earth surface potentials of a ground system. Part 1: Normal measurements (English PDF)

接地系统的土壤电阻率、接地阻抗和地面电位测量导则第1部分：常规测量

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Issued by

State Quality and Technical Supervision

Level / Type

National · Recommended

Issue date

January 3, 2000

Implementation date

August 1, 2000

Scope

GB/T 17949.1-2000 is the English-translated version of 接地系统的土壤电阻率、接地阻抗和地面电位测量导则第1部分：常规测量.

GB/T 17949.1-2000 — This standard specifies test methods include: (1) measurement from small ground rod, ground plate to the plant grounding system, and other large-scale ground pole ground resistance and ground impedance, (2) measuring the ground potential, including measuring step voltage, the contact voltage and equipotential lines, (3) to improve the engineering design, proportional model test method, the test chamber predicted ground resistance and ground potential gradient, (4) measurement of soil resistivity.

Listed in this standard test method is limited to the use of direct current, DC current cyclical commutation, sinusoidal AC currents and inrush current (used to measure the impact of grounding impedance). The guidelines do not include all possible means of testing and test methods.

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Document preview — GB/T 17949.1-2000

National Standard of the People's Republic of China

ICS: 29.020
Classification: K 60

Issued by: State Quality and Technical Supervision

What this standard covers1
Document data2

What this standard covers

This standard specifies test methods include: (1) measurement from small ground rod, ground plate to the plant grounding system, and other large-scale ground pole ground resistance and ground impedance, (2) measuring the ground potential, including measuring step voltage, the contact voltage and equipotential lines, (3) to improve the engineering design, proportional model test method, the test chamber predicted ground resistance and ground potential gradient, (4) measurement of soil resistivity. Listed in this standard test method is limited to the use of direct current, DC current cyclical commutation, sinusoidal AC currents and inrush current (used to measure the impact of grounding impedance). The guidelines do not include all possible means of testing and test methods. Because of the many variables in the test, the test is difficult to achieve highly accurate and therefore the most appropriate use of existing test methods carefully do the test, but also a thorough understanding of the cause of the error.

Document data

International classification (ICS): 29.020.

Chinese classification (CCS): K60.

Estimated length of the Chinese original: 36,371 words.

Adopted international standard: ANSI/IEEE 81-1993, IDT.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

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