BS IEC 60313 pdf download – Coaxial connectors used in nuclear laboratory instrumentation

BS IEC 60313 pdf download – Coaxial connectors used in nuclear laboratory instrumentation
1 Scope and object
This International Standard applies to coaxial connectors for electrical instruments used innuclear laboratories. While particularly useful in such applications, the connectors includedin this standard are also useful in other applications. However，this standard does notnecessarily apply to nuclear power installations where special requirements may necessitatethe use of other connectors, some of which (e.g. types N and TNC) are described in variousparts of IEC 60169.
2Normative references
The following referenced documents are indispensable for the application of this document.For dated references,only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60169-8:1978，Radio-frequency connectors – Part 8: R.F. coaxial connectors withinner diameter of outer conductor 6,5 mm (0,256 in) with bayonet lock – Characteristicimpedance 50 ohms (type BNC)
Amendment 1 (1996)
Amendment 2 (1997)
IEC 60169-10:1983，Radio-frequency connectors – Part 10: R.F. coaxial connectors withinner diameter of outer conductor 3 mm (0,12 in) with snap-on coupling – Characteristicimpedance 50 ohms (type SMB)
Amendment 1 (1986)
Amendment 2 (1996)
IEC 60498:1975,High-voltage coaxial connectors used in nuclear instrumentationIEC 60729:1982，Multiple controllers in a CAMAC crate
3Recommended connectors
To comply with this standard， nuclear laboratory instruments shall use the connectors listedbelow for nuclear signal applications.
3.1connectors for peak voltages not exceeding 5oo v
For applications in nuclear laboratory instruments, the following connectors should be usedfor peak voltages not exceeding 500 v:
a) type BNC as defined in lEC 60169-8;b) type 50CM as defined in lEC 60729;c) type SMB as defined in lEC 60169-10.
3.2 High-voltage connector
For applications up to 5 kV， type B connectors, as defined in lEC 60498,should be used.These connectors are often termed type SHV connectors (Safe High Voltage).See also 4.3.
Descriptions
4.1 BNC connector
The BNC connector (3.1a)) is a medium size connector that has been in use for a long periodof time and continues to be used in a wide variety of applications and disciplines.
4.250CM and SMB connectors
The type 50CM(3.1b))(commonly referred to as the LEMO connector) is a miniatureconnector with a positive securing mechanism while the type SMB(3.1c)) is a subminiaturesnap-on connector. As technology advanced，particularly with the advent of solid-statecircuitry, instrument panel space became both scarce and crowded while the number of inputand output connectors continued to increase. Thus， the miniature type 50CM connector(3.1b)) and the subminiature type SMB connector (3.1c)) came into common use on NIM(see [1]1),CAMAC(see IEC 60729 and [2J) and Fastbus(see [3]) instruments as well as innumerous other applications, both in nuclear instrumentation and in many other areas.
4.3 High-voltage connector
The high-voltage connector (3.2) is commonly known as type SHv(Safe High Voltage) connector.lt is a small connector in which the pin and socket contacts are recessed within the con-nector housing and surrounded by insulating sleeves so as to minimize the possibility of theuser accidentally coming into contact with high voltage when the connector pair is not mated.