DIN EN IEC 61757-7-3:2025-06

This part of IEC 61757 defines the terminology, structure, and performance characteristics of optical voltage sensors using a polarimetric measurement method. The document specifies test methods and procedures for determining the most important 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. There are no restrictions on the scope of application of the document. Application of this standard increases investment security for manufacturers and users, provides testing laboratories and manufacturers with defined specifications for testing, and ensures compatibility across manufacturers.