BS ISO 8820-10:2020 Road vehicles – Fuse-links Part 10: Fuse-links with tabs Type L (high current miniature).
This document specifies fuse-links with tabs (blade-type) Type L (high current miniature) for use in road vehicles. It establishes, for this fuse-link type, the rated current, test procedures, performance requirements and dimensions.
This document is applicable for fuse-links with a rated voltage of 32 V, a current rating of≤60 A and a breaking 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 ISO 8820-2. The numbering of its clauses corresponds to that of ISO 8820-1 whose requirements are applicable, except where modified by requirements particular to this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2768-1, General tolerances一Part 1: Tolerances for linear and angular dimensions without individual tolerance indications
ISO 8820-1, Road vehicles一Fuse-links 一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:
一ISO Online browsing platform: available at https://www.iso.org/obp
一 IEC Electropedia: available at http://www.electropedia.org/
5 Tests and requirements
In addition to carrying out the test procedures in accordance with ISO 8820-1, the following criteria shall 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 connection resistance shall be 0,5 mI maximum for Type L fuse links to ensure the proper function of the test fixture.
Fuse-inks according to this part of ISO 8820 shall provide for visible evidence of an open fuse-element.
5.3 Test cable sizes
Test cable sizes shall be as given in Table 3. All tests for a particular fuse-link rating shall be performed using the same cable size.
Test cable sizes are specified to allow comparative fuse-link tests to be carried out. The cable size specified herein does not necessarily indicate the size of cable to be used in the vehicle application.
A force (F1.. F3) shall be applied to each of the tabs of the fuse-link in accordance with Figure 4. The force shall be held for 2 s. The test force shall not be applied abruptly.
The deformation of the test sample shall not exceed 0,5 mm. After the test, the insulator shall be intact and the terminals shall not be removed from the insulator.BS ISO 8820-10 pdf download.