GB/T 42125.7-2024Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 7: Safety requirements for hand-held and hand-manipulated probe assemblies for electrical measurement and test (English PDF)
测量、控制和实验室用电气设备的安全要求 第7部分：电工测量和试验用手持和手操探头组件的安全要求
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 26, 2024
Implementation date
November 1, 2025
Scope
GB/T 42125.7-2024 is the English-translated version of 测量、控制和实验室用电气设备的安全要求 第7部分：电工测量和试验用手持和手操探头组件的安全要求.
GB/T 42125.7-2024 is the Chinese standard "Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 7: Safety requirements for hand-held and hand-manipulated probe assemblies for electrical measurement and test".
Its scope clause reads: This document specifies the safety requirements for hand-held and hand-operated probe assemblies for electrical measurement and testing, and related accessories.
Used as a non-contact or direct electrical connection between components and test and measurement equipment. They may be fixedly mounted on the equipment It may also be a detachable accessory of the device.
This document is primarily intended as a safety standard for the products mentioned in its scope, but is also intended for use by technical committees under the IEC Guide 104 and ISO /IEC Guide 51, and develop documents similar to those mentioned in the scope of this document. Its clauses include terms and definitions.
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Document preview — GB/T 42125.7-2024
National Standard of the People's Republic of China
- ICS
- 19.080
- Classification
- N09
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.1 Parts and accessories
- 3.2 Quantity
- 3.3 Experiment
- 3.4 Safety Terms
- 3.5 Insulation
- 4 Overview
- 4.1 Types of probe assemblies
- 4.2 Security
- 4.3 Verification
- 4.4 Environmental Conditions
- 5 Test
- 5.1 General Principles
- 5.2 Test sequence
- 5.3 Reference test conditions
- 5.4 Test under single fault condition
- 5.5 Testing during reasonably foreseeable misuse
- 6 Signs and Documents
- 6.1 Sign
- 6.2 Warning signs
- 6.3 Marking durability
- 6.4 File
- 7 Protection against electric shock
- 7.1 General Principles
- 7.2 Determination of accessible parts
- 7.3 Limits for accessible parts
- 7.4 Protection against electric shock
- 7.5 Insulation requirements
- 7.6 Voltage test procedure
- 7.7 Structural requirements for protection against electric shock
- 8 Protection against mechanical hazards
- 9 Mechanical stress resistance
- 9.1 General Principles
- 9.2 Rigidity test
- 9.3 Drop test
- 9.4 Swing impact test
- 10 Temperature limit
- 11 Protection against fluid hazards
- 11.1 Cleaning
- 11.2 Specially protected probe assembly
- 12 components
- 12.1 General
- 12.2 Fuse
- 12.3 Probe Line
- 13 Protection against flashover and short-circuit hazards
- 13.1 General Principles
- 13.2 Exposed conductive parts
- Appendix A (Normative) Touch current measurement circuit
- Appendix B (Normative) Standard Test Guidelines
- Appendix C (Normative) Measurement of Clearances and Creepage Distances
- Appendix D (Normative) Routine Spark Test on Probe Line
- Appendix E (Informative) 4mm Connector
- Appendix F (Normative) Measurement Category
- Appendix G (Informative) Determination of electrical clearances in Table 2
- Appendix H (Informative) Phase-to-neutral voltage of public grid power supply system
1 Scope
This document specifies the safety requirements for hand-held and hand-operated probe assemblies for electrical measurement and testing, and related accessories.
Used as a non-contact or direct electrical connection between components and test and measurement equipment. They may be fixedly mounted on the equipment
It may also be a detachable accessory of the device.
This document is primarily intended as a safety standard for the products mentioned in its scope, but is also intended for use by technical committees under the IEC Guide
104 and ISO /IEC Guide 51, and develop documents similar to those mentioned in the scope of this document.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 42125.1-2024 Safety requirements for electrical equipment for measurement, control and laboratory use Part 1.General requirements (IEC 61010-1.2016,IDT)
IEC 60027-1.1992/AMD1.1997 Letter symbols for electrotechnical use Part 1.General
IEC 60027-1.1992/AMD2.2005 Letter symbols for electrotechnical use Part 1.General
Code)]
Note. GB/T 4208-2017 Degrees of protection provided by enclosures (IP code) (IEC 60529.2013, IDT)
IEC 61180.2016 High-voltage test technology for low-voltage equipment, definitions, test and procedural requirements, test equipment ment)
Note. GB/T 17627-2019 High voltage test technical definitions, test and procedure requirements, test equipment for low voltage equipment (IEC 61180.2016, MOD)
3 Terms and Definitions
The following terms and definitions apply to this document.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 76 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 42125.1-2024Safety requirements for electrical equipment for measurement, control and laboratory use - Part 1: General requirements
- GB/T 4208-2017Degrees of protection provided by enclosures (IP code)
- GB/T 17627-2019High-voltage test techniques for low-voltage equipment - Definitions, test and procedure requirements, test equipment
IEC 61010 · IEC 60027 · IEC 60529.2013 · IEC 61180.2016
Similar standards
GB 38031-2025|GB/T42125.7-2024|GB 4793.5-2008|GB/T 1.1-2020|GB/T 42125|GB 4793.5-2001|GB/T 42125.1-2024|GB/T 4208-2017
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Related Standards
GB/T 17627-2019 — High-voltage test techniques for low-voltage equipment - Definitions, test and procedure requirements, test equipment
GB/T 4208-2017 — Degrees of protection provided by enclosures (IP code)
GB/T 42125.1-2024 — Safety requirements for electrical equipment for measurement, control and laboratory use - Part 1: General requirements
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