BS EN 60076-4. Power transformers - Part 4. Guide to the lightning impulse and switching impulse testing. Power transformers and reactors Ingestion-build-134498 for use with coalface cutters

for use with coalface cutters and other similar machines: types 307

BS 4873 is not applicable to:

It is applicable to integrated on-torch systems and to systems where a discrete extraction system is attached to the welding torch close to the arc area

ISO 4386-1 describes in detail the pulse-echo method

It relates to such instruments which in normal or foreseeable circumstances are likely to be used by children up to the age of 14 years

BS EN 60076-4. Power transformers - Part 4. Guide to the lightning impulse and switching impulse testing. Power transformers and reactors Ingestion-build-134498 for use with coalface cutters