IEC 63522-11:2025 pdf download,Electrical relays – Tests and measurements – Part 11: Enclosure protection and degree of protection. IEC 63522-11:2025 is intended for testing electrical relay enclosures, specifying the relevant severities and conditions necessary for measurements and assessments. These tests are designed to evaluate the performance of Devices Under Test (DUTs) under anticipated conditions of

IEC TR 63491:2025 pdf download,Live working – Guidance for end users for the selection of personal protective equipment against the hazards of an electric arc. IEC TR 63491:2025 has been developed to offer comprehensive guidance to end users regarding the selection, utilization, and maintenance of personal protective equipment (PPE) designed to protect against electrical arc

CISPR 12:2025 pdf download,Vehicles, boats and devices with internal combustion engines or traction batteries – Radio disturbance characteristics – Limits and methods of measurement for the protection of off-board receivers. CISPR 12:2025 The limits in this document are designed to provide protection in the frequency range of 30 MHz to 1 000 MHz for off-board

IEC 61156-12:2025 pdf download,Multicore and symmetrical pair/quad cables for digital communications – Part 12: Symmetrical single pair cables with transmission characteristics up to 1,25 GHz – Work area wiring – Sectional specification. IEC 61156-12:2025 outlines specifications for cables designed for single balanced pair cabling, applicable in office, home, and industrial settings as described in ISO/IEC

IEC 63522-49:2025 pdf download,Electrical relays – Tests and measurements – Part 49: Long term stability of sealing. IEC 63522-49:2025 is intended for testing various types of electrical relays, focusing on their performance under anticipated conditions of transportation, storage, and all aspects of operational use. This document establishes a standardized testing method specifically designed to assess