BS EN 60688:1992:2002 Edition
$167.15
Electrical measuring transducers for converting a.c. electrical quantities to analogue or digital signals
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 34 |
Specifies the terminology, test methods, and accuracy for converting electrical inputs into outputs of analogue direct current or in a digital form where the input frequency lies between 5 Hz and 1500 Hz.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Cooperating organizations |
| 3 | Contents |
| 6 | Foreword Foreword to amendment A1 Foreword to amendment A2 Contents |
| 7 | Introduction 1 Scope |
| 8 | 2 Normative references 3 Definitions 3.1 General terms electrical measuring transducer auxiliary supply auxiliary circuit transducer with offset zero |
| 9 | transducer with suppressed zero distortion factor output load ripple content (of an analogue output signal) output signal output power output current (voltage) reversible output current (voltage) measuring element of a transducer single element transducer multi-element transducer multi-section transducer response time compliance voltage (accuracy |
| 10 | (output) series mode interference voltage (output) common mode interference voltage storage conditions stability usage group 3.2 Description of transducers according to the measurand voltage transducer current transducer active power (watt) transducer reactive power (var) transducer frequency transducer phase angle transducer power factor transducer |
| 11 | 3.3 Description of transducers according to their output load fixed output load transducer variable output load transducer 3.4 Nominal values nominal value output span fiducial value circuit insulation voltage nominal power factor maximum permissible values of input current and voltage limiting value of the output (current or voltage) signal measuring range |
| 12 | nominal value of the measured voltage nominal value of the measured current nominal value of the measurand 3.5 User adjustment calibration value calibration value of the measured voltage calibration value of the measured current calibration value of the measurand calibration value of the output signal adjustment range conversion coefficient 3.6 Influence quantities and reference conditions influence quantity 3.6.2 reference conditions |
| 13 | nominal range of use 3.7 Errors and variations error error expressed as a percentage of the fiducial value intrinsic error variation due to an influence quantity variation due to an influence quantity expressed as a percentage of the fiducial value 3.8 Accuracy, accuracy class, class index accuracy accuracy class class index |
| 14 | 4 Class index, permissible limits of intrinsic error, auxiliary supply and reference conditions 4.1 Class index 4.2 Intrinsic error 4.3 Conditions for the determination of intrinsic error 4.4 Auxiliary supply |
| 16 | 5 Requirements 5.1 Input values 5.2 Analogue output signals |
| 17 | 5.3 Digital output signals 5.4 Ripple (for analogue outputs) 5.5 Response time 5.6 Variation due to over-range of the measurand 5.7 Limiting value of the output signal 5.8 Limiting conditions of operation |
| 18 | 5.9 Limits of the measuring range 5.10 Limiting conditions for storage and transport 5.11 Sealing 5.12 Stability 6 Tests 6.1 General |
| 19 | Table 6 Usage groups 6.2 Variations due to auxiliary supply voltage |
| 20 | 6.3 Variations due to auxiliary supply frequency 6.4 Variations due to ambient temperature |
| 21 | 6.5 Variations due to the frequency of the input quantity(ies) 6.6 Variations due to the input voltage |
| 22 | 6.7 Variations due to the input current 6.8 Variations due to power factor |
| 23 | 6.9 Variation due to output load 6.10 Variations due to distortion of the input quantity(ies) |
| 24 | 6.11 Variation due to magnetic field of external origin 6.12 Variation due to unbalanced currents |
| 25 | 6.13 Variation due to interaction between measuring elements 6.14 Variation due to self-heating |
| 26 | 6.15 Variation due to continuous operation 6.16 Variation due to common mode interference |
| 27 | 6.17 Variation due to series mode interference 6.18 Permissible excessive inputs 6.19 Voltage test, insulation tests and other safety requirements |
| 28 | 6.20 Impulse voltage tests 6.21 High frequency disturbance test 6.22 Test for temperature rise 6.23 Other tests |
| 29 | 7 Marking 7.1 Marking on the case 7.2 Markings relating to the reference conditions and nominal ranges of use for transducers |
| 30 | 7.3 Identification of connections and terminals 7.4 Information to be given in a separate document |
| 31 | Table 7 Symbols for marking transducers |
| 32 | Annex A (informative) Bibliography Annex ZA (normative) Normative references to international publications with their corresponding European publications |
| 33 | National annexc(informative) Committees responsible |
