IEC 61757-7-3:2024 defines the terminology, structure, and performance characteristics of fibre optic voltage sensors using a polarimetric measurement method. The document specifies test methods and procedures for measuring key performance parameters of these sensors. It addresses only the voltage sensing element and not the additional devices that are unique to each application. The document does not specify the required performance values of optical polarimetric fibre optic voltage sensors, because these specifications depend on the designated application of the sensor and are typically defined by the user of the sensor. The required performance values are usually defined when designing a sensor for a specific application.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA (normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4 Components of optical voltage sensor using polarimetric method 4.1 General description <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.2 Classification of Pockels cells Figures Figure 1 \u2013 Measurement system using optical voltage sensor <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5 Characteristic tests 5.1 General information 5.2 Input-to-output characteristics 5.2.1 General Tables Table 1 \u2013 List of parameters to be obtained <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.2.2 Test methods Figure 2 \u2013 I\/O characteristics of a fibre optic voltage sensor <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figure 3 \u2013 Measurement setup for the waveform comparison method Table 2 \u2013 Test methods <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.2.3 Test procedure Figure 4 \u2013 Measurement setup for the AC bridge method <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.2.4 Evaluation <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 5.3 Warm-up time 5.3.1 General 5.3.2 Test method 5.3.3 Evaluation 5.4 Voltage conditions for obtaining characteristic parameters <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 5.5 Input parameter dependency 5.5.1 Frequency characteristics Table 3 \u2013 Voltage conditions for obtaining characteristic parameters <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 5.5.2 Transient characteristics <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Figure 5 \u2013 Transient characteristics of sensors for AC measurements <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 5.6 External environment dependency 5.6.1 Test of the steady state temperature characteristics Figure 6 \u2013 Transient characteristics of sensors for AC\/DC measurements <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Figure 7 \u2013 Configuration example for evaluating the steady temperatureand transient temperature characteristics of the sensor part <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 5.6.2 Test of the transient temperature characteristics Figure 8 \u2013 Example of a temperature profile <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Figure 9 \u2013 Birefringence change during temperature change <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Figure 10 \u2013 Example of temperature program <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 5.6.3 Shock and vibration test <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Annex A (informative)Principle of optical voltage sensor A.1 Outline A.2 Pockels effect <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Figure A.1 \u2013 Pockels effect <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | A.3 Voltage detection method A.3.1 General Figure A.2 \u2013 Configuration of a voltage detection system using the Pockels effect Table A.1 \u2013 Direction of electric field with sensitivity <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | A.3.2 Examples of voltage detection method Figure A.3 \u2013 Basic configuration of an optical voltage sensorusing the intensity modulation method <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure A.4 \u2013 Basic configuration of an opticalvoltage sensor using the interferometric method <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Annex B (informative)Features of optical voltage sensor technology <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Annex C (informative)Design considerations C.1 General information C.2 Performance restricting factors <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | C.3 Procedure for determining the specifications of the equipment <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Annex D (informative)Measurement parameter performance table D.1 General D.2 I\/O characteristics Table D.1 \u2013 I\/O characteristics <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | D.3 Frequency characteristics Table D.2 \u2013 Frequency characteristics <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | D.4 Transient characteristics Figure D.1 \u2013 Example of the transient characteristic <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | D.5 Steady state temperature characteristics Figure D.2 \u2013 Example of the temperature characteristics at voltage 0 Figure D.3 \u2013 Example of the temperature characteristics at rated voltage <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | D.6 Transient temperature characteristics Figure D.4 \u2013 Example of the transient temperature characteristics at input voltage 0 Figure D.5 \u2013 Example of the transient temperature characteristics at rated voltage <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | D.7 Shock test Figure D.6 \u2013 Example of the shock test at voltage 0 Figure D.7 \u2013 Example of the shock test at rated voltage <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fibre optic sensors – Voltage measurement. Polarimetric method<\/b><\/p>\n |