Specifications for 400 V Systems

Maximum Input Short-Circuit Withstand

The maximum input short-circuit withstand for the parallel maintenance bypass panel is ICC=10 kA.

Recommended Cable Sizes

Cable sizes in this manual are based on the minimum requirements in table B.52.3 and table B.52.5 of IEC 60364-5-52 with the following assertions:

90 °C conductors
An ambient temperature of 30 °C
Use of copper conductors
PE cable size is based on table 54.2 of IEC 60364-5-54
Installation method C
Specific to AC cables: Maximum length 70 m with a line voltage drop <3% installed on perforated cable trays, XLPE-type insulation, single layer trefoil formation, THDI between 15% and 33%.

NOTE: If the ambient temperature is greater than 30 °C, larger conductors are to be selected in accordance with the correction factors of the IEC.

UPS	Cable	Cable Size per Phase (mm²)
10 kVA	UPS 1 Output/UPS 2 output	Refer to the UPS installation manual.
	System input	16
	System output	16
	PE	10
15 kVA	UPS 1 Output/UPS 2 output	Refer to the UPS installation manual.
	System input	16
	System output	16
	PE	10
20 kVA	UPS 1 Output/UPS 2 output	Refer to the UPS installation manual.
	System input	25
	System output	25
	PE	10
30 kVA	UPS 1 Output/UPS 2 output	Refer to the UPS installation manual.
	System input	35
	System output	35
	PE	16
40 kVA	UPS 1 Output/UPS 2 output	Refer to the UPS installation manual.
	System input	50
	System output	50
	PE	16