Power transformers - Guide to the lightning impulse and switching impulse testing. Power transformers and reactors1 Scope This part of IEC 60076 gives guidance and explanatory comments on the existing procedures for lightning and switching impulse testing of power transformers to supplement the requirements of IEC 60076 3. It is also generally applicable to the testing of reactors (see IEC 60289), modifications to power transformer procedures being indicated where required. Information is given on waveshapes, test circuits including test connections, earthing

Recommendations for test strategies with respect to the protection of ground and surface waters and the maintenance of the habitat function of soil are included

Technical options for interworking multiple vendors' products

BS 3900-D9 on determination of colour and colour difference is useful for:

The DVB data consist of an MPEG2 transport stream containing one or more programmes

X-ray photoelectron spectroscopy (XPS) is used extensively for the surface (1 nm to 10 nm) analysis of materials

It gives no information on the behaviour of the units subjected to other types of loading

Under supervision or education in accordance with BS EN IEC 60335-2-111

and plastic products

ISO 11665‑2 gives indications for measuring the average potential alpha energy concentration of short‑lived radon-222 decay products in the air and the conditions of use for the measuring devices

after ashing the sample and dissolution of the ash

This part of EN 10228 does not apply to:

ISO 3269 exemplifies the required sampling plan and designated inspection categories that help you achieve precision in terms of product functionality