IEC 60216-2 PDF

Gardashura If the decision to extend the original test programme is taken after its completion, the duration of the complete procedure may become prohibitive. To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit bsigroup. These may eic briefly expressed as follows see 3. Relevant and detailed instructions on how to proceed using non-destructive, proof or destructive test criteria are provided in 5.

Author:Sashakar Branos
Country:Mozambique
Language:English (Spanish)
Genre:Politics
Published (Last):8 October 2005
Pages:387
PDF File Size:8.89 Mb
ePub File Size:8.14 Mb
ISBN:517-8-69502-911-8
Downloads:46616
Price:Free* [*Free Regsitration Required]
Uploader:Nekus



Mikajora However, in many cases, the deviations arise from the ageing behavior of the material; this happens with many thermoplastic materials or other materials where the ageing temperature range includes, or is close to, a transition temperature of some kind, or where there is more than one ageing mechanism at work.

A simplified procedure is given in IEC At the same time, the calculation procedures were made more comprehensive, enabling full statistical testing of data obtained using a diagnostic property of any type, including the particular case of partially incomplete data. A choice of properties is given in IEC General procedures for the determination of thermal endurance properties, temperature indices and thermal endurance profiles withdrawn ISOPlastics — Standard atmospheres for conditioning and testing ISO The procedure is carried out numerically, and appropriate statistical tests are introduced.

In such cases it is often convenient to start by loading the ageing oven with one-half of the prepared specimens and performing measurements after the second or third exposure cycle of the recommended series. However, the planned number of groups of specimens at each temperature see 5. Groups are tested as indicated in the table. If necessary, determine the initial value of idc property as specified in 5. Where the test criterion for non-destructive or proof tests is based upon the initial value of the property, this should be determined from a group of specimens of at least twice the number of specimens in each temperature group.

Values of the abscissa are proportional to the reciprocal of the thermodynamic absolute temperature. TC — Ie and qualification of electrical insulating materials and systems rss. Divide the specimens by random selection into as many groups as there are exposure temperatures. If end-point is reached in one of the Groups B — F, Groups G — I are immediately removed from the oven and tested after conditioning.

Figure 4 — Destructive tests — Estimation of time to end-point 6. Prepare a number of specimens following the instructions in 5. If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team.

The circulation of the air within the oven and the exchange of the air content should be adequate to ensure that the rate of thermal degradation is not influenced by accumulation of decomposition products or oxygen depletion see 5. It is necessary to ensure that the intercept of the regression line with the time axis gives the same value as the mean of the intercepts of the individual lines. The end-point should be selected to indicate a degree of deterioration of the insulating material which has reduced its ability to withstand a stress encountered in actual service in an insulation system.

The common usage is employed throughout this standard. Some physical properties are sensitive even to minor variations of specimen thickness. In this case, either a start again with a new group of specimens, or b ignore the specimen and reduce the value ascribed to the number m i of specimens in group i by one.

However, further guidance will be found in IEC Where there is no risk of ambiguity, either temperature groups or test groups may be referred to simply as groups. Except as permitted under the Copyright, Designs and Patents Act no extract —2 be reproduced, stored in a retrieval system or transmitted in any form or by any means — electronic, photocopying, recording or otherwise — without prior written permission from BSI. This value might be selected with respect to usual service requirements.

TEP was then abandoned, with the TI and HIC being reported in a way which indicated whether or not the statistical tests had been fully satisfied. Where the derivation is by the simplified procedure see IEC the format is: In either case, the specimen preparation technique should be carefully examined.

Most Related.

ALIMENTOS CURATIVOS NATURALES NUTRIBULLET PDF

IEC 60216-2 PDF

Mikajora However, in many cases, the deviations arise from the ageing behavior of the material; this happens with many thermoplastic materials or other materials where the ageing temperature range includes, or is close to, a transition temperature of some kind, or where there is more than one ageing mechanism at work. A simplified procedure is given in IEC At the same time, the calculation procedures were made more comprehensive, enabling full statistical testing of data obtained using a diagnostic property of any type, including the particular case of partially incomplete data. A choice of properties is given in IEC General procedures for the determination of thermal endurance properties, temperature indices and thermal endurance profiles withdrawn ISOPlastics — Standard atmospheres for conditioning and testing ISO The procedure is carried out numerically, and appropriate statistical tests are introduced. In such cases it is often convenient to start by loading the ageing oven with one-half of the prepared specimens and performing measurements after the second or third exposure cycle of the recommended series. However, the planned number of groups of specimens at each temperature see 5.

SHERWOOD RD 5405 MANUAL PDF

Equality PDF

.

Related Articles