IEC 60439-1 states that Dielectric Test voltage AC for a Control circuit whose rated insulation voltage (Ui) is less than 60V must be [2Ui + 1000 with a minimum of 1500].
Now there is a Switchgear with Control circuits containing timers and relays and the cable is 2.5 mm2 ,1000v PVC cable.
the question bothering me is how can the control circuit of this switchgear withstand the test voltage as stated by IEC.
As far as my knowledge goes, a panel assembler / integrator doesn't really conduct dielectric test on the control cable. they do it only for Busbars or main Power Cables.
dielectric test on the control cable is done in their respective factories.
Any help on this matter is highly appreciated.