Metal enclosed switchgear assemblies testing

Testing of metal-enclosed switchgear assemblies 14/427 Table 14.5 Temperature rise limits for buses, bus connections and other parts of a switchgear assembly... 

Testing of metal-enclosed switchgear assemblies 14/435 Insulation resistance method... 

This test is applicable to all outdoor metal-enclosed switchgear and controlgear assemblies, as in lEC 60298, lEC 60694 and ANSI C-37/20C. The enclosure to be tested should be complete in all respects including its mounts, bushings (for HT switchgear assemblies, 1 kV and above) and wiring. One or more vertical units can be tested simultaneously as may be convenient, but not more than 3 m panel width can be tested at a time. For a multiple unit switchboard, however, at least two vertical units should be tested together to check the joints between the units. 

The procedure and test requirements will remain the same as that discussed in Section 14.3.2, for metal-enclosed switchgear and controlgear assemblies. 

Testing a bus system is generally along similar lines to those for a switchgear assembly, discussed in Chapter 14. In this chapter we discuss additional tests that are specifically for a metal-enclosed bus system,... 

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