Printed boards - Part 20: Printed circuit boards for high-brightness LEDs
IEC 62326-20:2016 specifies the properties of the printed circuit board (hereafter described as PCB) for high-brightness LEDs. Many aspects of the PCB for high-brightness LEDs are identical with those of ordinary PCBs, therefore, some aspects of this standard also describe general aspects. This edition includes the following significant technical changes with respect to the previous edition:
a)…
Steel and iron — Determination of nickel content — Gravimetric or titrimetric method
ISO 4938:2016 specifies a method for the determination of nickel in steel and iron by gravimetry or titrimetry.
The method is applicable to nickel contents from 1 % to 30 % (mass fraction).
Medical electrical equipment — Part 2-36: Particular requirements for the basic safety and essential...
This is the second edition of CAN/CSA-C22.2 No. 60601-2-36, Medical electrical equipment — Part 2-36:
Particular requirements for the basic safety and essential performance of equipment for extracorporeally
induced lithotripsy, which is an adoption, with Canadian deviations, of the identically titled IEC
(International Electrotechnical Commission) Standard 60601-2-36 (second edition, 2014-04). It…
1.1 General
This Standard specifies requirements for materials and methods for the manufacture, transportation,
and installation of architectural, structural, and specialty precast concrete products.
Note: This Standard should be specified for precast concrete elements used in segmental construction.
1.2 Shop drawings
This Standard specifies the requirements, in addition to those specified…
Railway applications - Traction transformers and inductors on board rolling stock
IEC 60310:2016 applies to traction and auxiliary power transformers installed on board rolling stock and to the various types of power inductors inserted in the traction and auxiliary circuits of rolling stock, of dry or liquid-immersed design. This standard can also be applied, after agreement between purchaser and manufacturer, to the traction transformers of three-phase AC line-side powered…
Electrolyte and water for vented lead acid accumulators - Part 1: requirements for electrolyte
IEC 62877-1:2016 applies to electrolyte and their components used for filling vented lead-acid batteries, for example dry charged cells or batteries, and for electrolyte replacement or electrolyte density adjustment of batteries in operation. This international standard defines the composition, purity and properties of electrolyte to be applied where specific instructions from the battery…
