ISO 8205:2021 Resistance welding equipment — Water-cooled secondary connection cables

ISO 8205:2021 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-i 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-i. 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-i and A-2, with power factor cosq  0,95 as shown in Figure 1. 10 Electrical requirement 10.1 Type test 10.1.1 Measurement of insulation resistance Measure the insulation resistance of a new dry cable following application of a D.C. voltage of 48 V for 1 min. 10.1.2 Determination of the impedance of the cable (only for cables in accordance with double conductor connection cables) Determine the impedance of the cable at 30 °C by: — application of an alternating voltage, U, to its terminals (as sinusoidal as possible); — using a calibrated toroid, measuring the intensity, I, of the current circulating in the cable.ISO 8205 pdf download.