GB 4793.5-2008
Safety requirements for electrical equipment for measurement, control, and laboratory use.Part 5: Safety requirements for hand-held probe assemblies for electrical measurement and test (English Version)

Standard No.

GB 4793.5-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB 4793.5-2008

Replace

GB 4793.5-2001

Scope

This part of GB 4793 applies to the following types of hand-held and hand-operated probe assemblies, as well as related accessories for professional use, industrial process use, and educational use. These probe assemblies are used as an interface between an electrical phenomenon and test or measurement equipment. They can be fixedly mounted on the device or they can be a detachable accessory to the device. a) Low-voltage and high-voltage non-attenuating probe assemblies (type A): The rated voltage value directly connected to the non-attenuating probe assembly is higher than the effective value of AC 33V, peak value of 46.7V or DC 70V, but not exceeding 63kV. They contain no active components, voltage dividers, or signal conditioning, but may include passive, non-attenuating components such as fuses. b) High-voltage attenuation or voltage-dividing probe assembly (Type B): The rated value of the secondary voltage directly connected to the attenuation or voltage-dividing probe assembly is higher than 1kv but not exceeding 63kV. The voltage dividing function may be implemented entirely within the probe assembly, or partially within the test or measurement equipment used with the probe assembly. c) Low-voltage attenuating or dividing probe assemblies (Type C): Attenuating, dividing or other signal conditioning probe assemblies directly connected to a voltage rating greater than 33V ac, rms, 46.7V peak, or 70V dc, but not exceeding 1kV AC RMS or 1.5kV DC value. Signal conditioning functions may be implemented entirely within the probe assembly, or partially within the test or measurement equipment used with the probe assembly.

GB 4793.5-2008 Referenced Document

• GB 4208 Degrees of protection provided by enclosure(IP code)
• GB/T 16927.1 High-voltage test techniques.Part 1:General definitions and test requirements*， 2011-12-30 Update
• GB/T 16927.2 High-voltage test techniques.Part 2:Measuring systems*， 2013-02-07 Update
• GB/T 16927.3 High voltage test techniques.Part 3:Definitions and requirements for on-site testing*， 2010-11-10 Update
• GB/T 5465.2 Graphical symbols for electrical equipment Part 2: Graphical symbols*， 2023-12-28 Update
• IEC 60027 Letter Symbols to be used in electrical technology (Edition 4.0)
• ISO 7000 Graphical symbols for use on equipment — Index and synopsis*， 2019-07-12 Update

GB 4793.5-2008 history

• 2008 GB 4793.5-2008 Safety requirements for electrical equipment for measurement, control, and laboratory use.Part 5: Safety requirements for hand-held probe assemblies for electrical measurement and test
• 2001 GB 4793.5-2001 Safety requirements for electrical equipment for measurement,control and laboratory use Particular requirements for hand-held probe assemblies for electrical measurement and test

GB 4793.5-2008 -All Parts