ISO 8205:2021 Resistance welding equipment — Water-cooled secondary connection cables.
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/
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
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)
4.1 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.