GB/T 42036-2022Testing specification of single-phase grounding capacitive current in high-voltage power network of mine (English PDF)
矿井高压电网单相接地电容电流检验规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 12, 2022
Implementation date
October 12, 2022
Scope
GB/T 42036-2022 is the English-translated version of 矿井高压电网单相接地电容电流检验规范.
GB/T 42036-2022 sets out how the single-phase earth-fault capacitive current of a mine high-voltage power network is tested.
Its contents list covers the basic conditions for the inspection, the technical requirements and inspection rules, the inspection methods, the judgment rules, the inspection report and an informative appendix giving an estimation method.
Clause 1 applies it to the inspection of single-phase grounding capacitive current in 6 kV and 10 kV mine power networks.
Its terms are taken partly from DL/T 308-2012, which it quotes, and it adds its own entries for capacitive current, for grounding current - which it describes as including capacitive, harmonic and active current - and for compensation current, the inductive current through the arc-suppressing coil. Issued on 12 October 2022, it has applied since the same date.
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Document preview — GB/T 42036-2022
National Standard of the People's Republic of China
- ICS
- 73.100.40
- Classification
- K 93
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Inspection basic conditions
- 5 Technical requirements and inspection rules
- 6 Inspection method
- 7 Judgment rule
- 8 Inspection report
- Appendix A (Informative) Estimation Method
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.
1 Scope
This document specifies the basic conditions, technical requirements, inspection methods, inspection rules, judgment Rules and inspection report requirements.
This document is applicable to the inspection of single-phase grounding capacitance current of 6kV and 10kV power grids in mines.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
DL/T 308-2012 Capacitive current test procedure for neutral point ungrounded system
3 Terms and Definitions
DL/T 308-2012 and the following terms and definitions apply to this document.
3.5 It is a measurement method for directly measuring the single-phase artificial metallic grounding current of the system. [Source: DL/T 308-2012, 3.6]
3.1 neutral point ungrounded system
A three-phase power network in which the neutral point is not directly grounded.
[Source: DL/T 308-2012, 3.1]
3.2 Capacitive current
The capacitive current when a single-phase metallic ground occurs in an uncompensated neutral point ungrounded system.
3.3 Grounding current
The current flowing into the earth due to a fault in the electrical system.
Note: Ground current includes capacitive current, harmonic current and active current.
3.4 Compensation current
After the neutral point of the neutral point ungrounded system is connected to the arc suppressing coil, the inductive current flowing through the arc suppressing coil when the system is single-phase metallically grounded. [Source: DL/T 308-2012, 3.3]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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