DIN EN 50655-1:2024-10

This document specifies the test methods and requirements of tests for fingerprinting (as defined in 3.9) of solvent-free polymerizable, reacting resinous compound intended to be used for electrical insulation and/or mechanical protection in cable accessories covered by EN 50393, HD 629-1 and HD 629-2, for low and medium voltage up to 20,8/36 (42) kV. According to the scope of application, there are no restrictions on the use of the document. The standard differs from DIN EN 50655-1 (VDE 0278-655-1):2018-06 as follows: a) description of sample preparation (4.3.2); b) introduction of separate tables for polyurethane, polybutadiene, epoxy, and silicone resins for fingerprint testing; c) detailed definition of test parameters, for example, description of the spindle for viscosity measurement and the valid measuring range for Shore hardness; d) revision of the limit deviation (Tables 1 to 4). A typical application example for fingerprinting testing is the testing of resinous compounds of cable accessories to check the electrical insulation and/or mechanical protection.