BS IEC 60313 pdf download

BS IEC 60313 pdf download COAXIAL CONNECTORS USED IN NUCLEAR LABORATORY INSTRUMENTATION
1scope 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 lEC60169.
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.
3.1 Connectors for peak voltages not exceeding 5o0 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 IEC 60498, should be used. These connectors are often termed type SHV connectors (Safe High Voltage). See also 4.3.
4 Descriptions
4.1 BNC connector
The BNC connector (3.1 a)) is a medium size connector that has been in use for a long period of time and continues to be used in a wide variety of applications and disciplines.
4.2 50CM and SMB connectors The type 50CM (3.1 b)) (commonly referred to as the LEMO connector) is a miniature connector with a positive securing mechanism while the type SMB (3.1 c)) is a subminiature snap-on connector. As technology advanced, particularly with the advent of solid-state circuitry, instrument panel space became both scarce and crowded while the number of input and output connectors continued to increase. Thus, the miniature type 50CM connector (3.1 b)) and the subminiature type SMB connector (3.1 c)) came into common use on NIM (see [1 ] 1 ), CAMAC (see IEC 60729 and [2]) and Fastbus (see [3]) instruments as well as in numerous other applications, both in nuclear instrumentation and in many other areas.