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ITU-T K.77 (01/2009)

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Characteristics of metal oxide varistors for the protection of telecommunication installations
Recommendation ITU-T K.77 gives the basic requirements to be met by metal oxide varistors (MOVs) for the protection of power circuits and signal circuits of telecommunication installations from surges. The purpose of this Recommendation is to provide technical guidelines for purchasers and manufacturers of MOVs to ensure their satisfactory operation in the applications for which they are intended. This Recommendation is intended to be used for the harmonization of existing or future specifications issued by MOV manufactures, telecommunication equipment manufactures, administrations or network operators.
Citation: http://handle.itu.int/11.1002/1000/9659
Approval date: 2009-01-13
Provisional name:K.var
Approval process:AAP
Status: In force
Maintenance responsibility: ITU-T Study Group 5
Further details: Patent statement(s)
Development history
[10 related work items in progress]
Ed. ITU-T Recommendation Status Summary Table of Contents Download
1.2 K.77 (2009) Amd. 1 (12/2013) In force
here
- here
1.1 K.77 (2009) Cor.1 (05/2011) In force
here
here
here
1 K.77 (01/2009) In force
here
here
here