BS EN IEC 61757-4-3:2020
$198.66
Fibre optic sensors – Part 4-3: Electric current measurement. Polarimetric method
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 56 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 7 | English CONTENTS |
| 10 | FOREWORD |
| 12 | INTRODUCTION |
| 13 | 1 Scope 2 Normative references 3 Terms and definitions |
| 15 | 4 Components of optical current sensor using polarimetric method 4.1 General descriptions Figures Figure 1 – Measurement system using optical current sensor |
| 16 | 4.2 Classification of Faraday elements Figure 2 – Construction of optical current sensor |
| 17 | 5 Characteristic test 5.1 General information 5.2 Output power of light source Figure 3 – Classification of Faraday elements Tables Table 1 – List of parameters to be obtained |
| 18 | 5.3 Input power of light detector 5.4 I/O characteristics 5.4.1 General Figure 4 – Example of an optical power monitor Figure 5 – Example of the amplifying circuit of a light detector |
| 19 | 5.4.2 Test method Figure 6 – I/O characteristics of an optical current sensor |
| 20 | Figure 7 – Measurement system of waveform comparison method Table 2 – Test method |
| 21 | 5.4.3 Test procedure Figure 8 – Measurement system of AC bridge method |
| 23 | 5.4.4 Evaluation |
| 24 | 5.5 Warm-up time 5.5.1 General 5.5.2 Test method 5.5.3 Evaluation 5.6 Current conditions for obtaining each parameter Table 3 – Current conditions for obtaining each parameter |
| 25 | 5.7 Input parameter dependency 5.7.1 Frequency characteristic 5.7.2 Transient characteristic |
| 26 | Figure 9 – Transient characteristics of AC dedicated system |
| 27 | 5.8 External environment dependency 5.8.1 Steady state temperature characteristic test Figure 10 – Transient characteristics of DC/AC system |
| 29 | Figure 11 – Configuration example of steady state temperature characteristictest and transient temperature characteristic test of sensor part Figure 12 – Example of temperature profile |
| 30 | 5.8.2 Transient temperature characteristic test Figure 13 – Birefringence change during temperature change |
| 32 | 5.8.3 External magnetic field test Figure 14 – Example of temperature programme |
| 33 | 5.8.4 Conductor position test Figure 15 – Position of the outer conductor in the externalmagnetic field test when the Faraday element is an optical fibre |
| 34 | 5.8.5 Vibration test Figure 16 – Position of the conductor in the conductorposition test when the Faraday element is an optical fibre |
| 35 | Annex A (informative)Principle of optical current sensor A.1 Outline A.2 Faraday effect Figure A.1 – Faraday effect |
| 36 | A.3 Types of Faraday element A.4 Conversion of the Faraday effect into an electric signal A.4.1 Detection of the Faraday effect of nonmagnetic material A.4.2 Detection of the Faraday effect of ferromagnetic material |
| 37 | A.5 Current detection method A.5.1 General A.5.2 Examples of current detection method Figure A.2 – Configuration of current detection method using Faraday effect |
| 38 | Figure A.3 – Basic configuration of intensity modulation type optical current sensor Figure A.4 – Configuration example of intensitymodulation type reflective optical current sensor |
| 39 | Figure A.5 – Configuration example of interference type optical current sensor |
| 40 | Annex B (informative) Features of optical current sensor technology |
| 41 | Annex C (informative) Design considerations C.1 General information C.2 Performance restricting factors |
| 42 | C.3 Procedure for determining the specifications of the equipment |
| 44 | Annex D (informative) Optical current sensor output in the application of other phase magnetic fields D.1 Ampere’s circulation integral law D.2 Influence of other phase magnetic fields Figure D.1 – The law of Ampere’s circulation integral |
| 45 | Figure D.2 – Image diagram of incomplete closed loop |
| 46 | Annex E (informative)Measurement parameter performance table E.1 General E.2 Output power of light source E.3 Input power of light detector E.4 I/O characteristics Table E.1 – Output power of light source Table E.2 – Input power of light detector Table E.3 – I/O characteristics |
| 47 | E.5 Frequency characteristics Table E.4 – Frequency characteristics |
| 48 | E.6 Transient characteristics E.7 Steady state temperature characteristics Figure E.1 – Example of the transient characteristic Figure E.2 – Example of the temperature characteristics at current 0 |
| 49 | E.8 Transient temperature characteristics Figure E.3 – Example of the temperature characteristics at rated current Figure E.4 – Example of the transient temperaturecharacteristics at input current 0 |
| 50 | E.9 External magnetic field Figure E.5 – Example of the transient temperaturecharacteristics at rated current Table E.5 – External magnetic field |
| 51 | E.10 Conductor positions Figure E.6 – Positions of the outer conductor Figure E.7 – Positions of the conductor in the conductor positions test Table E.6 – Conductor position |
| 52 | E.11 Vibration Figure E.8 – Example of the vibration test at current 0 Figure E.9 – Example of the vibration test at rated current |
| 53 | Bibliography |
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BS EN IEC 61757-4-3:2020:2022 Edition
Fibre optic sensors – Part 4-3: Electric current measurement. Polarimetric method Published By Publication Date…
