1 Scope
This part of GB/T 22264 specifies the terms, categorization, classification and conformity of product, technical requirements, packaging, storage and transportation, information, conventional marks and symbols, marks and symbols at terminal and inspection rules of mounted digital display ammeters and voltmeters.
This part is applicable to mounted digital display ammeter and voltmeter, and also applicable to the digital display part of dual analogue-digital display ammeters and voltmeters.
This part is not applicable to:
——ammeters and voltmeters only provided with direct acting indicating analogue.
——portable digital display ammeters and voltmeters.
——the instruments for special purpose specified in national standard (or professional standard).
2 Normative References
The following normative document contains provisions which, through reference in this text, constitute provisions of this part of GB/T 22264. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 22264.1-2008 Mounted Digital Display Electric Measuring Instruments Part 1: Definitions and General Requirements Common to All Parts
3 Terms and Definitions
For the purposes of this part, the terms and definitions given in GB/T 22264.1-2008 and the following apply.
3.1
digital display ammeter
digital display instrument used for measuring current
3.2
digital display voltmeter
digital display instrument used for measuring voltage
4 Categorization, Classification and Conformity of Product
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Categorization, Classification and Conformity of Product
4.1 Categorization
4.2 Classification
4.3 Conformity to Requirements of this Part
5 Reference Conditions and Intrinsic Error
5.1 Reference Conditions
5.2 Intrinsic Error
5.3 Full Scale Value of Measured Quantity
5.4 Accuracy Class Index
6 Nominal Range of Use and Variation
6.1 Nominal Range of Use
6.2 Variation Limit
6.3 Conditions to Determine Variation
7 Requirements
7.1 Safety Requirements
7.2 Electrical Requirements
7.3 Accuracy Performance Requirements
7.4 Electromagnetic Compatibility
7.5 Mechanical Requirements
7.6 Climate Influence Test
7.7 Mean Time between Failures
8 Packaging, Storage and Transportation
9 Information, Conventional Marks and Symbols
10 Marks and Symbols at Terminal
10.1 Requirements for Marks
10.2 Ground Terminal
10.3 Terminal of Measuring Circuit
10.4 Special Marks at Terminal
11 Inspection Rules
Table 1 Limit of Nominal Range of Use and Permissible Variation
Table 2 Short-term Overload
Table 3 Permissible Variation Caused by Electromagnetic Compatibility
