IEC 61156-4-1 pdf download
IEC 61156-4-1 pdf download Multicore and symmetrical pair/quad cables for digital communications – Part 4-1: Riser cables – Blank detail specification This blank detail specification relates to multicore and symmetrical pair/quad cables for digitalcommunications in riser application. This blank detail specification determines the layout and style for detail specifications describing multicore and symmetrical pair(s)/quad(s) cables for digital communication in riserwiring....
IEC 61227 pdf download
IEC 61227 pdf download Nuclear power plants – Control rooms – Operator controls 1 scope This International Standard supplements lEC 60964 which applies to the design for controlrooms of nuclear power plants. it identifies the Human-Machine Interface (HMl) requirementsfor discrete controls，multiplexed conventional systems, and soft control systems. For themain control room of a nuclear power plant,IEc 60964 includes general requirements...
IEC 61228 pdf download
IEC 61228 pdf download Fluorescent ultraviolet lamps used for tanning – Measurement and specification method Scope This International Standard describes the method of measuring, evaluating and specifying thecharacteristics of fluorescent ultraviolet lamps that are used in appliances for tanningpurposes. lt includes specific requirements regarding the marking of such lamps. These recommendations relate only to type testing. 2Normative references The following...
IEC 61467 pdf download
IEC 61467 pdf download Insulators for overhead lines – Insulator strings and sets for lines with a nominal voltage greater than 1 000 V – AC power arc tests I Arc current I n Specified arc current t Arc time t n Specified arc time I m Peak current value I R1 ,2 Currents in the return circuit I S1...
IEC 61646 pdf download
IEC 61646 pdf download Thin-film terrestrial photovoltaic (PV) modules – Design qualification and type approval 1 scope and object This International Standard lays down requirements for the design qualification and typeapproval of terrestrial,thin-film photovoltaic modules suitable for long-term operation ingeneral open-air climates as defined in lEC 60721-2-1.This standard is intended to apply toall terrestrial flat plate module materials not covered...
IEC 61754-7 pdf download
IEC 61754-7 pdf download Fibre optic interconnecting devices and passive components – Fibre optic connector interfaces – Part 7: Type MPO connector family 1 Scope This part of IEC 61 754 defines the standard interface dimensions for type MPO family of connectors. 2 Description The parent connector for type MPO connector family is a multiway plug connector charac- terized by...
IEC 61754-24 pdf download
IEC 61754-24 pdf download Fibre optic interconnecting devices and passive components – Fibre optic connector interfaces – Part 24: Type SC-RJ connector family 1 scope This part of lEC 61754 defines the standard interface dimensions for the type SC-RJ family ofconnectors. 2Normative references The following referenced documents are indispensable for the application of this document.For dated references, only the edition...
IEC 61758-1 pdf download
IEC 61758-1 pdf download Fibre optic interconnecting devices and passive components – Interface standard for closures – Part 1: General and guidance 4.3.6 General functional requirements In addition to the above the following functions shall be provided, where required, in each closure: • ability to attach other structural parts; • ability to fit an air pressure valve. 5 Closure overpressure...
IEC 61858 pdf download
IEC 61858 pdf download Electrical insulation systems – Thermal evaluation of modifications to an established wire-wound EIS 5 Evaluation of the change of thickness of an EIM 5.1 Samples Representative samples of the established EIS (the reference EIS) and of the EIS with reduced EIM thickness(es) (the candidate EIS) shall be evaluated in accordance with Clause 1 0. 5.2 Acceptance...
IEC 62002-2 pdf download
IEC 62002-2 pdf download Mobile and portable DVB-T/H radio access – Part 2: Interface conformance testing 4.5 Degradation criteria and resynchronization Four different degradation criteria are used. The criteria a and b are used in the non-mobile cases for DVB-T. Criterion c is for mobile reception in DVB-T and criterion d for DVB-H reception A receiver must be able to...