ISO 8205:2021 pdf download – Resistance welding equipment — Water-cooled secondary connection cables.
1 Scope This document gives specifications for single- and double-conductor secondary connection cables used for resistance welding and allied processes. These specifications include requirements for electrical, mechanical and cooling characteristics of the cables and their test procedures. 2 Normative references There are no normative references in this document. 3? Terms? and? definitions For the purposes of this document, the following terms and definitions 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 — IEC Electropedia: available at http:// www .electropedia .org/ 3.1 double-conductor connection cable cable comprising two conductors providing an electrical link between the secondary terminals of a welding transformer and the welding set (manual or robotized guns) and designed so as to have as low an electrical reactance as possible 3.2 single-conductor connection cable cable comprising one conductor providing an electrical link between the secondary terminals of a welding transformer and the welding set (manual or robotized guns) 4? Classification 4.1 Form of the end lugs Double-conductor water-cooled connection cables are classified into two types, A-1 and A-2, in accordance with the form of the end lugs (see 5.1.3). Single-conductor water-cooled connection cables are classified into three types, C-1, C-2 and D, in accordance with the form of the end lugs (see 5.2.3). 4.2 Resistance and reactance Double-conductor, water cooled connection cables are classified into two types, A-1 and A-2, with power factor cosφ ≥ 0,95 as shown in Figure 1.
8 Materials The choice of the materials is at the discretion of the manufacturer. The cable shall be free of silicone. The insulating covering and the insulation between the two end lugs of double-conductor connection cable shall be undamaged. In addition, these shall not contain any components which give off toxic gases on burning and shall withstand a maximum temperature of 100 °C without damage. 9 Electrical characteristics 9.1 General The electrical characteristics are given as theoretical values as a function of cross-sectional areas and lengths. The values are only given to calculate the permissible welding current and the voltage drop in the cable, and they are not acceptance figures.