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IEC 62820‑1‑2:2026 specifies the technical requirements for the composition, functions, performance and test methods of building intercom systems using the Internet protocol (IP), and it is a supplement to IEC 62820‑1‑1. This document is applicable to the IP building intercom systems for both residential and commercial buildings.

In addition to the requirements of IEC 61326-1, this part of IEC 61326 specifies the EMC test requirements for process automation equipment using at least one Ethernet-APL (Ethernet ADVANCED PHYSICAL LAYER) compliant port according IEC TS 63444. The type of equipment covered by this document includes INFRASTRUCTURE DEVICES such as switches as well as measurement and control devices. This document provides requirements for the EMC test setups of the APL interface for devices intended for use in process control and process measurement. The other functions of the equipment remain covered by other parts of the IEC 61326 series. NOTE Ethernet-APL uses IEEE Std. 802.3-2022 Ethernet Physical Layer 10BASE-T1L, suitable to be used for full- duplex communication over a single balanced pair of conductors. The test levels are based on the intended environment as stated in the product’s specification or user documentation and selected appropriately from IEC 61326-1.

IEC 60127-4:2026 relates to universal modular fuse-links (UMF) for printed circuits and other substrate systems, used for the protection of electric appliances, electronic equipment, and component parts thereof, normally intended to be used indoors. It does not apply to fuse-links for appliances intended to be used under special conditions, such as in a corrosive or explosive atmosphere. These fuses are normally intended to be mounted or replaced only by appropriately skilled persons using specialized equipment. This document applies in addition to the requirements of IEC 60127-1. The objectives of this part of IEC 60127 are as given in IEC 60127-1, with the additional requirement of a degree of non-interchangeability. This fourth edition cancels and replaces the third edition published in 2005, Amendment 1:2008 and Amendment 2:2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) align to IEC 60127-1:2023, third edition; b) enhance the rated current of UMFs to 100A and provide the corresponding maximum voltage drop and maximum sustained dissipation; c) modify the figures; d) update the normative references to the latest version. This International Standard is to be used in conjunction with IEC 60127-1:2023

This document specifies calculation methods for determining the required mass flow to be relieved for each specified conditions described in Table 1. Recommendations for pressure relief devices for cryostats are given in Annex A.

This document defines the assessment of endurable longitudinal compressive force (LCF) of a vehicle. The endurable longitudinal compressive force is a parameter depending on the vehicle design. It is used to estimate the risk of derailment of a vehicle as a result of being subjected to longitudinal compressive force, under operating conditions.
NOTE 1   As operating conditions can vary in several aspects (infrastructure, train configurations etc.), this document defines uniform assessments of endurable longitudinal compressive force per vehicle in specific operating conditions. The main assessment of endurable longitudinal compressive force for conventional trains is derived from UIC 530-2:2011, which is based on practical tests performed in ERRI-B12. Assessments of endurable longitudinal compressive force for high-capacity trains in this document are required by the methodology of IRS 40421. IRS 40421 assesses operational train parameters.
This document applies to the following types of vehicles:
-   single wagons;
-   permanently coupled units with standard ends between the vehicles;
-   permanently coupled units with diagonal buffers and screw couplers between the vehicles;
-   permanently coupled units with a bar coupler between the vehicles;
-   articulated units with 2-axle bogies;
-   wagons with 3-axle bogies;
-   low-floor wagons with eight or more axles (e.g. rolling road wagon);
-   vehicles with centre couplers;
-   railbound construction and maintenance machines as defined in EN 14033-1:2017.
NOTE 2   This document defines the acceptance process to be followed by vehicles that are operated in a way that high longitudinal compressive force occur in the trains due to their operational environment (e.g. train composition, brake mode, track layout).
The following vehicles are not in the scope of this document:
-   locomotives and passenger rolling stocks;
-   vehicles that are only operated in passenger trains.
NOTE 3   Locomotives, passenger rolling stocks and vehicles operated in passenger trains only are not in the scope of this document as they either are subject to low longitudinal compressive force in operation or have sufficient endurable longitudinal compressive force due to their axle load.
Acceptance criteria and test conditions as well as conditions for simulation are defined in this document. Conditions for dispensation of the assessment of the endurable longitudinal compressive force are also defined in this document.
This document applies principally to vehicles which operate without restrictions on tracks with a gauge of 1 435 mm in Europe.
NOTE 4   The influence on railway systems using other gauges is not sufficiently understood to extend the scope of this document to gauges other than 1 435 mm.
NOTE 5   For wagons with centre couplers, a need for assessment of derailment risk due to Longitudinal Forces on other gauges (1 524 mm, 1 600 mm, 1 668 mm) has been expressed. The influence on railway systems using other gauges is not sufficiently understood. This document only introduces some notions to assess it independently from the gauge.

This document specifies requirements and recommendations for designing, developing, and establishing integrated clinical decision support systems (CDSS) for research purposes in personalized medicine. This document can be used as an implementation guideline for setting up computational modelling workflows to enable such systems. It addresses data quality, formatting and handling, as well as the processes generating such data, and the set-up, validation, simulation, storing and sharing of computational models used for this specific purpose in personalized medicine. This includes recommendations and rules for configuration, descriptions, annotations, interoperability, integration, access and provenance of such data and derived models in an interpretable and evidence-based manner. This document also specifies how to integrate these rules with clinical trials execution applying standard operating procedures. Furthermore, requirements and recommendations for data used to construct or required for validating such models are addressed. This document does not apply for computational models used for diagnostic or therapeutic purposes in standard clinical practice, outside of a formal research or investigational setting.

This document specifies a test method to determine if a fitting will fail in crushing mode under compression before a predefined percentage deformation of moulded fittings for thermoplastics piping systems and provides recommended percentage deformation for fittings (see Annex A). This document applies to fittings made from unplasticized poly(vinyl chloride) (PVC-U), high-impact poly(vinyl chloride) (PVC-HI), chlorinated poly(vinyl chloride) (PVC-C), polyethylene (PE), polypropylene (PP), acrylonitrile-butadiene-styrene (ABS), poly(vinylidene difluoride) (PVDF), poly(phenyl sulfone) (PPSU) and unplasticized polyamide (PA-U). This document can also be applied to moulded fittings made from other thermoplastics, in which case the test conditions can differ.

This document specifies general requirements for the basic safety and essential performance of transcutaneous electrical acupoint stimulators (TEAS) with a focus on devices intended to stimulate acupoints on the human body. It applies to all types of TEAS specifically designed for acupoint-related therapeutic usage, only in the context of professional traditional Chinese medicine (TCM) healthcare services. It is not applicable to invasive electro-acupuncture stimulators for the application of electric currents via acupuncture needles inserted into the body.

This document specifies the general requirements for basic safety and essential performance of electric radial pulse tonometric devices. This document does not apply to the accuracy of differential diagnosis or interpretation of the diagnostic data obtained from the use of such devices. This document applies to pressure-based radial pulse tonometric devices.

This document defines the measurement method of optical image stabilization performance for still images compensating for handheld blur consisting of three rotational components, yaw, pitch and roll. It applies to consumer digital cameras with optical image stabilization for still images. Apparatuses such as camcorders and mobile phones with still image shooting functionality are within the scope of this document.

This document specifies the data exchange requirements between related systems within the smart city for electric vehicle (EV)-based demand response (DR) services utilizing nomadic devices as follows: EV-based DR service for demand reduction, called “demand response” during the shortage of reserve on electric grid or in response to a fine dust warning issued according to an air quality forecast; EV-based DR for demand increase, called “reverse demand response”, instead of curtailment during excess electricity generation by renewable energy sources such as the sun and wind. This document defines the requirements of main actors such as the EV, nomadic device, smart city cloud, charging station and service provider to support EV-based DR services. This document also defines the data set and data processing procedure requirements for EV-based DR services.

This document specifies the mounting dimensions required for interchangeability of rod-end spherical eyes of pneumatic cylinders. The rod-end spherical eyes have been designed specifically for the use with 1 000 kPa [10 bar1)] series cylinders manufactured in accordance with ISO 6432 and ISO 15552, but this does not limit their application. The spherical bearing end eyes are used on piston rods of pneumatic cylinders for mechanically transmitting the cylinder force under oscillatory rotational and tilting movements. The design of the rod-end spherical eyes is based on the maximum forces resulting from the specified internal diameter of the cylinders and pressure according to ISO 6432, ISO 15552 and ISO 21287. 1)1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

This document specifies requirements for the classification and grading of civil uncrewed aircraft systems (UAS). This document applies to heavier-than-air aircraft as well as aerostats of any possible architecture. This document applies to the industrial conception, development, design, production and delivery of civil UAS. It also applies to operations, modification, repair and maintenance of civil UAS. NOTE The characteristics in this document can be used individually or in combination, to meet specific needs of the classification and grading of civil UAS. This document does not apply to taxonomies of: automation levels; vertiports; UTM services.