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eLibrary > BS EN IEC 61757-7-3:2024 Fibre optic sensors - Voltage measurement. Polarimetric method >

BS EN IEC 61757-7-3:2024 Fibre optic sensors - Voltage measurement. Polarimetric method, 2024

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Annex ZA (normative)Normative references to international publicationswith their corresponding European publications [Go to Page]
English [Go to Page]
CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Components of optical voltage sensor using polarimetric method [Go to Page]
4.1 General description
4.2 Classification of Pockels cells
Figures [Go to Page]
Figure 1 – Measurement system using optical voltage sensor
5 Characteristic tests [Go to Page]
5.1 General information
5.2 Input-to-output characteristics [Go to Page]
5.2.1 General
Tables [Go to Page]
Table 1 – List of parameters to be obtained [Go to Page]
5.2.2 Test methods
Figure 2 – I/O characteristics of a fibre optic voltage sensor
Figure 3 – Measurement setup for the waveform comparison method
Table 2 – Test methods [Go to Page]
5.2.3 Test procedure
Figure 4 – Measurement setup for the AC bridge method [Go to Page]
5.2.4 Evaluation
5.3 Warm-up time [Go to Page]
5.3.1 General
5.3.2 Test method
5.3.3 Evaluation
5.4 Voltage conditions for obtaining characteristic parameters
5.5 Input parameter dependency [Go to Page]
5.5.1 Frequency characteristics
Table 3 – Voltage conditions for obtaining characteristic parameters [Go to Page]
5.5.2 Transient characteristics
Figure 5 – Transient characteristics of sensors for AC measurements
5.6 External environment dependency [Go to Page]
5.6.1 Test of the steady state temperature characteristics
Figure 6 – Transient characteristics of sensors for AC/DC measurements
Figure 7 – Configuration example for evaluating the steady temperatureand transient temperature characteristics of the sensor part [Go to Page]
5.6.2 Test of the transient temperature characteristics
Figure 8 – Example of a temperature profile
Figure 9 – Birefringence change during temperature change
Figure 10 – Example of temperature program [Go to Page]
5.6.3 Shock and vibration test
Annex A (informative)Principle of optical voltage sensor [Go to Page]
A.1 Outline
A.2 Pockels effect
Figure A.1 – Pockels effect
A.3 Voltage detection method [Go to Page]
A.3.1 General
Figure A.2 – Configuration of a voltage detection system using the Pockels effect
Table A.1 – Direction of electric field with sensitivity [Go to Page]
A.3.2 Examples of voltage detection method
Figure A.3 – Basic configuration of an optical voltage sensorusing the intensity modulation method
Figure A.4 – Basic configuration of an opticalvoltage sensor using the interferometric method
Annex B (informative)Features of optical voltage sensor technology
Annex C (informative)Design considerations [Go to Page]
C.1 General information
C.2 Performance restricting factors
C.3 Procedure for determining the specifications of the equipment
Annex D (informative)Measurement parameter performance table [Go to Page]
D.1 General
D.2 I/O characteristics
Table D.1 – I/O characteristics
D.3 Frequency characteristics
Table D.2 – Frequency characteristics
D.4 Transient characteristics
Figure D.1 – Example of the transient characteristic
D.5 Steady state temperature characteristics
Figure D.2 – Example of the temperature characteristics at voltage 0
Figure D.3 – Example of the temperature characteristics at rated voltage
D.6 Transient temperature characteristics
Figure D.4 – Example of the transient temperature characteristics at input voltage 0
Figure D.5 – Example of the transient temperature characteristics at rated voltage
D.7 Shock test
Figure D.6 – Example of the shock test at voltage 0
Figure D.7 – Example of the shock test at rated voltage
Bibliography [Go to Page]

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