ISO 8820-12-2020 pdf free download – Road vehicles — Fuse-links — Part 12: Fuse-links with tabs (blade type) Type N (sub miniature).
This document specifies fuse-links with tabs (blade-type) Type N (sub miniature), for use in roadvehicles. It establishes，for this fuse-link type,the rated current,test procedures，performancerequirements and dimensions.
This document is applicable for fuse-links with a rated voltage of 32 V a current rating of s30 A and abreaking capacity of 1 000 A intended for use in road vehicles.
This document is intended to be used in conjunction with ISO 8820-1 and with ISO 8820-2.Thenumbering of its clauses corresponds to that of 1lS0 8820-1 whose requirements are applicable, exceptwhere modified by requirements particular to this document.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document(including any amendments) applies.
ISO 8820-1, Road vehicles — Fuse-links — Part 1: Definitions and general test requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISo 8820-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:— ISO online browsing platform: available at https://www.iso.org/obp
一IEC Electropedia: available at http;://www.electropedia.org/
4Marking, labelling and colour coding
See lSo 8820-1 and Table 1.
5 Tests and requirements5.1General
5.1.1 Test criteria
In addition to carryingout the test procedures in accordance with ISO 8820-1, the following criteria apply.Tests shall be performed following the test sequences in Table 2.
The test fixtures for electrical tests shall be designed in accordance with Figure 1. The connectionresistance shall be ≤0,8 m2 for Type N fuse-links to ensure the proper function of the test fixture.Fuse-links according to this document shall provide for visible evidence of an open fuse-element.
5.1.2Test sequence.ISO 8820-12 pdf download.