定价： 0元 / 折扣价： 0 元

定价：

定价：

定价：

定价：

定价：

定价：

定价：

定价：

定价：

定价：

定价：

定价：

This guide covers general recommendations for lading mineral-oil power transformers, manufactured in accordance with ANSI C57.12.10-1976 and ANSI C57.12.30-1977 and other oil-insulated power transformers up to and including 100 MVA maximum nameplate rating. It is based mostly on aging of the winding insulation. Loading of transformers larger that 100 MVA may be limited by factors other than insulation aging such as stray flux, etc. When it is known that such limitations do not exist and… read more insulation aging rather that oil temperature, gassing, tank heating, etc is the controlling factor, this guide may be used. This guide may also be used for askarel filled transformers. read less

定价： 55元 / 折扣价： 47 元

This part of IEC/IEEE 62704 describes the concepts, techniques, and limitations of the finite element method (FEM) and specifies models and procedures for verification, validation and uncertainty assessment for the FEM when used for determining the peak spatial-average specific absorption rate (psSAR) in phantoms or anatomical models. It recommends and provides guidance on the modelling of wireless communication devices, and provides benchmark data for simulating the SAR in such phantoms or models. This document does not recommend specific SAR limits because these are found elsewhere (e.g. in IEEE Std C95.1 [1]1 or in the guidelines published by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) [2]).

定价： 112元 / 折扣价： 96 元