Please contact the Customer Service Centre see below for further information. The values are voltages between phases. Enter the exact number of the standard: e. . However, if the laser system within the laser product is operable when removed from the end product, the requirements of this Part 1 apply to the removable laser system.Next
Various search and navigation facilities allow for easy retrieval of graphical symbols. The technical content is therefore identical to the base edition and its amendment and has been prepared for user convenience. A vertical line in the margin shows where the base publication has been modified by amendments 1 and 2. Classification and designation of documents for plants, systems and equipment Provides rules and guidelines for the classification and designation of documents and document kinds. For instance, with respect to the ambient temperature and soil thermal resistivity, the values are governed in various countries by different considerations. It is understood that, particularly for certain nominal system voltages, normal operation of equipment cannot be ensured up to this highest voltage for equipment, having regard to voltage-sensitive characteristics such as losses of capacitors, magnetizing current of transformers, etc. In such cases, the relevant recommendations must specify the limit to which the normal operation of this equipment can be ensured.Next
Care must be taken not to draw unjustified conclusions from comparisons of values for different countries. Part 1 has been updated to include contemporary concepts of usability engineering, while also streamlining the process. It should be remembered that the values adopted in any particular country are governed by many factors some of which might not be of equal importance in other countries. At the time of publication, the edition indicated was valid. Part 2 contains tutorial information to assist manufactures in complying with Part 1, as well as offering more detailed descriptions of usability engineering methods that can be applied more generally to medical devices that go beyond safety-related aspects of medical device user interfaces. When one value only is indicated, it refers to three-wire systems and specifies the voltage between phases. In particular, the quantities related to the operating conditions of cables are liable to vary considerably from one country to another.Next
Particularly, in the case of soil thermal resistivity, it is well known that this quantity is very sensitive to soil moisture content and may vary significantly with time, depending on the soil type, the topographical and meteorological conditions, and the cable loading. Available in English, French and Japanese. It excludes voltage transients, such as those due to system switching, and temporary voltage variations. This sixth edition cancels and replaces the fifth edition published in 2005. It also applies to the identification of terminations of certain designated conductors.Next
The values indicated in the table above are the values agreed by the International Mixed Committee on Electric Traction Equipment C. For low-voltage installations, this voltage drop is limited to 4 %, therefore, the utilization voltage range is +10 %, —14 % 1. The values indicated are voltages between phases. It is recommended that in any one country only one value in the following groups should be used for the highest voltage for equipment: 123 kV-145 kV 245 kV-300 kV see table 5 -363 kV see table 5. A vertical line in the margin shows where the base publication has been modified by amendment 1. Attention is drawn to the fact that the information in clause 4 is intended only as a guide for cable installation designers when data provided by a user is incomplete.Next
Users are responsible for its correct application. Superficial comparisons between the values used in the various countries may lead to erroneous conclusions if they are not based on common criteria: for example, there may be different expectations for the life of the cables, and in some countries design is based on maximum values of soil thermal resistivity, whereas in others average values are used. A bilingual version of this publication may be issued at a later date. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. It is recommended that these values should not be used for new systems to be constructed in future.Next
Would you please take a minute to answer the questions overleaf and fax them to us at +41 22 919 03 00 or mail them to the address below. It specifies safety related processes to analyze, develop, and evaluate the usability of medical devices. The committee has decided that the contents of the base publication and its amendments 1 and 2 will remain unchanged until 2003. Numerical values should preferably be based on results of suitable measurements. For the utilization voltage range, in addition to the voltage variations at the supply terminals, voltage drops may occur within the consumer's installations. On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. It constitutes a technical revision.Next
Gives guidance for evaluating the photobiological safety of lamps and lamp systems including luminaires. Consequently, the requirements of this basic safety publication apply only if they are included, or are referred to in those standards. Each part is divided into sections which are published as separate standards. This publication shall not apply to standard voltages of components and parts used within electrical devices or items of equipment. This fourth edition cancels and replaces the third edition published in 1999 and constitutes a technical revision.Next
Concerning supply voltage range, under normal service conditions, it is recommended that the voltage at the supply terminals should not differ from the nominal voltage of the system by more than ±10 %. Clause 4 and its subclauses summarize the operating conditions used in various countries. It should be noted that one of the responsibilities of a technical committee is, wherever possible, to include or refer to requirements of basic safety publications in standards for equipment within its scope. The transition period should be as short as possible and should not exceed the year 2003. It bears the edition number 1.
It is recommended that only one of the two series should be used in any one country. The following procedure for choosing the values for the various parameters should, therefore, be adopted. It is recommended that only one of the series should be used in any one country. Also in this section is an outline of the information required from the purchaser for the selection of the appropriate type of cable. For undated references, the latest edition of the referenced document including any amendments applies. The values indicated in parentheses should be considered as non-preferred values.