Historical
ISO 669:2000
Resistance welding -- Resistance welding equipment -- Mechanical and electrical requirements
This International Standard applies to resistance welding equipment, to guns with inbuilt transformers and to complete movable welding equipment.
The following types are included:
- single-phase equipment with alternating welding current;
- single-phase equipment with rectified welding current by rectification of the output of the welding transformer;
- single-phase equipment with inverter welding transformer;
- three-phase equipment with rectified welding current by rectification of the output of the welding transformer;
- three-phase equipment with a current rectification in the input of the welding transformer (sometimes called frequency convertor);
- three-phase equipment with inverter welding transformers.
This International Standard applies neither to welding transformers sold separately nor to safety requirements.
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International Organization for Standardization [iso]
International Organization for Standardization [iso]
