31.100 - Electronic tubes

IEC 61643-312:2013 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c. They are defined as a gap, or several gaps with two or three metal electrodes hermetically sealed so that gas mixture and pressure are under control. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard provides information about the characteristics and circuit applications of GDTs having two or three electrodes. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical. Keywords: gas discharge tubes (GDT), overvoltage protection in telecommunications, signalling and low-voltage power distribution networks, nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c.

IEC 61643-311:2013 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c..They are defined as a gap, or several gaps with two or three metal electrodes hermetically sealed so that gas mixture and pressure are under control. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard contains a series of test criteria, test methods and test circuits for determining the electrical characteristics of GDTs having two or three electrodes. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical. This second edition of IEC 61643-311 cancels and replaces the first edition published in 2001. It constitutes a technical revision. Specific changes with respect to the previous edition are: Addition of performance values. Key words: gas discharge tubes (GDT), overvoltage protection in telecommunications, signalling and low-voltage power distribution networks, nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c.

IEC 60860:2014 prescribes general, radiation detection, environmental, mechanical, electromagnetic and documentation requirements and specifies acceptance criteria for criticality accident warning equipment. This International Standard applies to equipment intended to provide warning of a criticality accident by the detection of gamma radiation, neutrons or both from such an event. The main technical changes with regard to the previous edition are as follows:
- reference to IEC 61508 concerning the safety classification;
- introducing requirement for the alarm sound level;
- energy response requirement changes;
- specification of time period of 1 min for the overload requirement;
- updated EMC, mechanical and environmental requirements according to IEC 62706.

CISPR 16-1-2:2014 is available as CISPR 16-1-2:2014 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
CISPR 16-1-2:2014 specifies the characteristics and performance of equipment for the measurement of radio disturbance voltages and currents in the frequency range 9 kHz to 1 GHz. It has the status of a basic EMC publication. Specifications for ancillary apparatus are included for artificial mains networks, current and voltage probes and coupling units for current injection on cables. It is intended that the requirements of this publication are fulfilled at all frequencies and for all levels of radio disturbance voltages and currents within the CISPR indicating range of the measuring equipment. Methods of measurement are covered in the CISPR 16-2 series, and further information on radio disturbance is given in CISPR 16-3, while uncertainties, statistics and limit modelling are covered in the CISPR 16-4 series. This second edition cancels and replaces the first edition published in 2003 and its Amendment 1 (2004) and Amendment 2 (2006). This edition constitutes a technical revision which includes the following significant technical changes with respect to the previous edition:
- requirements from CISPR 22 for the AAN have been copied to this standard;
- and the CDNE for measurement of disturbance voltage in the frequency range 30 MHz to 300 MHz is added.

IEC 61788-19:2013 covers a test method detailing the tensile test procedures to be carried out on reacted Cu/Nb3Sn composite superconducting wires at room temperature. The object of this test is to measure the modulus of elasticity and to determine the proof strength of the composite due to yielding of the copper and the copper tin components from the stress versus strain curve. Furthermore, the elastic limit, the tensile strength, and the elongation after fracture can be determined by means of the present method, but they are treated as optional quantities because the measured quantities of the elastic limit and the elongation after fracture have been reported to be subject to significant uncertainties according to the international round robin test. The sample covered by this test procedure should have a bare round or rectangular cross-section with an area between 0,15 mm2 and 2,0 mm2 and a copper to non-copper volume ratio of 0,2 to 1,5 and should have no insulation. Key words: supraconductivity, mechanical properties

IEC 61643-312:2013 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c. They are defined as a gap, or several gaps with two or three metal electrodes hermetically sealed so that gas mixture and pressure are under control. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard provides information about the characteristics and circuit applications of GDTs having two or three electrodes. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical. Keywords: gas discharge tubes (GDT), overvoltage protection in telecommunications, signalling and low-voltage power distribution networks, nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c. The contents of the corrigendum of July 2013 have been included in this copy.

IEC 61643-311:2013 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c..They are defined as a gap, or several gaps with two or three metal electrodes hermetically sealed so that gas mixture and pressure are under control. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard contains a series of test criteria, test methods and test circuits for determining the electrical characteristics of GDTs having two or three electrodes. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical. This second edition of IEC 61643-311 cancels and replaces the first edition published in 2001. It constitutes a technical revision. Specific changes with respect to the previous edition are: Addition of performance values. Key words: gas discharge tubes (GDT), overvoltage protection in telecommunications, signalling and low-voltage power distribution networks, nominal system voltages up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c.

IEC 60601-2-65:2012 applies to the basic safety and essential performance of dental intra-oral X-ray equipment and its main components. The scope of this standard is restricted to X-ray equipment where the X-ray tube assembly contains the high-voltage transformer assembly. Dental extra-oral X-ray equipment is excluded from the scope of this standard. This particular standard has been prepared to provide, based on IEC 60601-1:2005 and its collaterals, a complete set of basic safety and essential performance requirements for dental intra-oral X-ray equipment. While the previously existing standards for such equipment were dedicated to components and subsystems, this particular standard addresses the system level of dental intra-oral X-ray equipment. Components and their functions are addressed as far as necessary.

Deals with terminology related to the measurement of the electrical properties of microwave tubes and contains terms concerning general applications, pulse operation, oscillator tubes, measurement of noise, microwave tube classification, crossed-field amplifier tubes.

The contents of the corrigendum of May 2016 have been included in this copy.

IEC 60350-2:2011 defines methods for measuring the performance of electric hobs for household use. Appliances covered by this standard may be built-in or for placing on a working surface or the floor. The hob can also be a part of a cooking range. This standard defines the main performance characteristics of these appliances which are of interest to the user and specifies methods for measuring these characteristics. This standard does not specify requirements for performance. This first edition of IEC 60350-2 is related to IEC 60350:1999 which shall be separated in two parts: one part for cooking ranges, ovens and steam ovens and the other part for hobs. This part 2 of IEC 60350 covers hobs, and IEC 60350-1 covers ovens.

Applicable to cathode ray tubes and cathode ray tube assemblies which are intended for use as components in apparatus and which have integral protection with respect to the effects of implosion. A CRT covered by this standard is intended to be installed in an enclosure designed both to protect the rear of the CRT against mechanical or other damage under normal conditions of operation and to protect the user against particles expelled in a backwards direction from the CRT face in the event of implosion.

Gives dimensions and tolerances for electronic tube and valve bases, holders and caps, together with the relevant gauges and gauging procedure, to ensure interchangeability. Also includes recommended practice for the preparation of drawings of electronic tubes and valves. This is a loose-leaf publication and supplements, containing new or revised sheets, are issued from time to time.

Applies to multi-electrode tubes, with the exception of cathode-ray tubes. Describes the system used for numbering the electrodes of the same type multi-electrode tubes and for assigning designations to the units of multiple-unit tubes.

Applies to the measurement of the direct interelectrode capacitances of electronic tubes of the following types: receiving tubes, cathode-ray tubes, gas tube and gas-filled valves, phototubes, photocells and multiplier types, high-power vacuum tubes.

Gives guidance on the preparation of outline drawings of cathode ray tubes with the object of encouraging the same practice when publications are prepared in different countries.

Applicable to cathode ray tubes and cathode ray tube assemblies which are intended for use as components in apparatus and which have integral protection with respect to the effects of implosion. A CRT covered by this standard is intended to be installed in an enclosure designed both to protect the rear of the CRT against mechanical or other damage under normal conditions of operation and to protect the user against particles expelled in a backwards direction from the CRT face in the event of implosion.

Gives guidance on the preparation of outline drawings of cathode ray tubes with the object of encouraging the same practice when publications are prepared in different countries.

This document relates to display storage tubes of assessed quality.

Supersedes CECC 11 101:1984 * CECC WG 11 work handled by SR 39

Supersedes CECC 14 001 Issue 1:1984 * CECC WG 11 work handled by SR 39

This document relates to photomultiplier tubes of assessed quality.

Gives definitions and general requirements common to all apparatus and installations in ships.

Gas discharge tubes (GDTs) are used for applications up to 1 000 V a.c. or 1 500 V d.c. in communication or signalling circuits. They are defined as a gap, or series of gaps, in an enclosed discharge medium other than air. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical.

The contents of the corrigendum of July 1967 have been included in this copy.

IEC 60139:2000 gives guidance on the preparation of outline drawings of cathode-ray tubes (CRTs), tube components, tube sub-assemblies and ancillary components with the object of encouraging the same practice when publications are prepared in different countries. These recommendations are contained in the specimen drawings, descriptive text and in the tables of required dimensions.

Standardizes primary batteries with respect to their electrochemical system, dimensions, nomenclature, terminal configurations, markings, test methods, typical performance safety and environmental aspects.

Applicable to cathode ray tubes and cathode ray tube assemblies which are intended for use as components in apparatus and which have an integral protection with respect to the effects of implosion.

Specifies tests and requirements for primary batteries with aqueous electrolyte to ensure their safe operation under normal use and reasonably foreseeable misuse. Has the status of a group safety publication in accordance with IEC Guide 104.

Specifies tests and requirements for primary lithium batteries to ensure their safe operation under intended use or reasonably foreseeable misuse.

Specifies the requirements for the construction and testing of oil-immersed electrical apparatus, oil-immersed parts of electrical apparatus and Ex components in the type of protection 'o', intended for used in potentially explosive atmospheres of gas, vapour and mist.

It has the status of a horizontal standard in accordance with IEC Guide 108.

The contents of the corrigendum of July 1967 have been included in this copy.

This document relates to pulsed and cw magnetrons.

Supersedes CECC 36 002 Issue 1:1978

Supersedes CECC 36 001 Issue 1:1977

Generic specification for travelling wave amplifier tubes.

This blank detail specification shows the layout and contents to be followed in the preparation of harmonized detail specifications for C.W. power amplifier travelling wave tubes up to 500 watts.

IEC 62701:2014 specifies requirements for recycled mineral insulating oils intended for use in transformers, switchgear, and similar electrical equipment in which oil is required for insulation and heat transfer. These oils are produced by processes employed offsite. Oils treated and reconditioned on-site are not within the scope of this standard. Oils with and without additives are within the scope of this standard. Such oils will have originally been supplied in compliance with a recognized unused mineral insulating oil specification. This standard does not differentiate between the methods used to recycle mineral insulating oil. This standard does not apply to mineral insulating oils used as impregnates in cables or capacitors.

Gas discharge tubes (GDTs) are used for applications up to 1 000 V a.c. or 1 500 V d.c. in communication or signalling circuits. They are defined as a gap, or series of gaps, in an enclosed discharge medium other than air. They are designed to protect apparatus or personnel, or both, from high transient voltages. This standard does not specify requirements applicable to complete surge protective devices, nor does it specify total requirements for GDTs employed within electronic devices, where precise coordination between GDT performance and surge protective device withstand capability is highly critical.