BSI 16/30336198 DC:2016 Edition
$13.70
BS EN 60051-3. Direct acting indicating analogue electrical measuring instruments and their accessories. Part 3. Special requirements for wattmeters and varmeters
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 20 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | FOREWORD |
| 8 | INTRODUCTION |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Description, classification and compliance 4.1 Description 4.2 Classification 4.3 Compliance with the requirements of this standard 5 Requirements 5.1 Reference conditions |
| 11 | 5.2 Limits of intrinsic uncertainty, fiducial value 5.2.1 Limits of intrinsic uncertainty 5.2.2 Correspondence between intrinsic uncertainty and accuracy class 5.2.3 Fiducial value 5.3 Nominal range of use and variations 5.3.1 Nominal range of use |
| 14 | 5.3.2 Limits of variations 5.3.3 Conditions for the determination of variations 5.3.4 Determination of variation due to power factor 5.3.5 Special tests for variations 5.4 Operating uncertainty, overall system uncertainty and variations 5.5 Electrical requirements 5.5.1 Electrical safety requirements 5.5.2 Self-heating 5.5.3 Permissible overloads 5.5.3.1 Continuous overload 5.5.3.2 Overloads of short duration |
| 15 | 5.5.4 Limiting range of temperature |
| 16 | 5.5.5 Deviation from zero 5.5.5.2 All circuits energized 5.5.5.3 Voltage circuit(s) only energized 5.5.6 Electromagnetic compatibility (EMC) 5.6 Constructional requirements 5.6.1 General constructional requirements 5.6.2 Damping 5.6.2.2 Overshoot 5.6.2.3 Response time |
| 17 | 5.6.2.4 Impedance of the external measuring circuit 5.6.3 Sealing to prevent access 5.6.4 Scales 5.6.5 Stopper 5.6.6 Preferred values 5.6.7 Adjusters, mechanical and/or electrical 5.6.8 Effects of vibration and shock 5.6.9 Degrees of protection provided by enclosure 5.6.10 Terminals 6 Information, Markings and symbols 6.1 Information 6.2 Markings, symbols and their locations |
| 18 | 6.3 Markings relating to the reference values and nominal ranges of use of influence quantities 6.4 The symbols for marking instruments and accessories 6.5 Markings and symbols for terminals 6.5.1 Requirements for markings 6.5.2 Earthing (grounding) terminals 6.5.3 Measuring circuit terminals 6.5.4 Special markings for terminals 6.5.4.1 Single element instruments 6.5.4.2 Polyphase instruments 6.6 Instructions for use 7 Package 8 Test rules |
| 20 | Annex A (normative) Nonconformity classification of tests |
