LV Switchboard Testing

IEC 60439-1 has several type tests. For ASTA certificates of complete type tests we need to perform each test. We can also issue Certificates covering just Short-circuit rating or temperature rise or dielectric properties.

As switchboard design varies a lot, we require advice on the overall size of the board, the rated current of the incoming unit and the size of each outgoing unit. A sketch of the front view of the board showing the units and the busbar run and a single line diagram is helpful.

For each test required we need advice on the following:

Temperature rise	Test current of incoming and outgoing units and diversity factor
Dielectric properties	Rated operational voltage eg 415 V Rated insulation voltage eg 690 V Rated Impulse voltage eg 6 kV
Short circuit rating	Specify whether busbars and or units are to be tested Short time current ratings of phase busbars eg 50 kA for 1s Short time current ratings of Neutral circuit can be specified or performed at 60%
Degree of Protection	Need to specify the IP rating required eg IP32 or IP43 or IP2X etc
Protective earth circuit
Creepage and clearance
Mechanical operation	Quantity eg 5 units, 1000 operations per unit