GB 4793.5-2008Safety 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 PDF)

GB 4793.5-2008 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5部分：电工测量和试验用手持探头组件的安全要求.

GB 4793.5-2008 — GB 4793 This section applies to each of the following types of hand-held and hand operated probe assembly, as well as professional use, with the industrial process, using a phase education Off attachment.

The probe assembly is used as an interface between an electrical phenomenon and test or measurement equipment.

They may be fixedly mounted on the device, it can be detachable accessory equipment. a) a low pressure and a high pressure non-attenuating probe assembly (A type). rated voltage direct access to non-attenuation of the probe assembly has a higher than 33V AC Rms, 46.7V peak or DC 70V, but not more than 63kV.

They contain neither active element, nor provided with dividing function or signal conditioning, but it may include such non-passive fuse damping element. b) attenuating the high-pressure or partial pressure of the probe assembly (B type). damping voltage dividing probe assembly or direct access to a secondary voltage higher than the nominal 1kV, but not exceeding 63kV.

Dividing function may all be implemented in the probe assembly, or used in conjunction with the probe assembly of the present Partially implemented in the testing or measuring equipment. c) a low pressure or partial pressure of the attenuation probe assembly (C type). attenuation, partial pressure or other signal conditioning components directly access probe voltage ratings Higher than 33V AC rms, 46.7V peak or DC 70V, but no more than 1kV rms AC or DC 1.5kV value.

Signal conditioning functions may all be implemented in the probe assembly, or testing or measuring probe assembly is provided for use with the present together in Preparation of partially implemented.

Note. the range is not A, B or C as defined in the probe assembly, or the probe assembly is designed to supply a low-voltage mains, comprising, or not part of the present Laid Other special features of the probe assembly need to meet the requirements specified in GB 4793 in the other portions.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 725 pages — is available in the English PDF.

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