It specifies a verification procedure for welding current meters and monitoring devices with current sensing coil, which are applied in measuring welding current in resistance welding using alternating current of 50 Hz or 60 Hz, or with direct current.
BS ISO 17657-5:2006 history
2006BS ISO 17657-5:2006 Resistance welding - Welding current measurement for resistance welding - Verification of welding current measuring system