socomec Green Power 2.0 - Alues of Currents for Cable Sizing

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Green Power 2.0 320 to 400 kVA - Ref.: INMGP2401210-GB_12
4. 5.5. Neutral cable cross-section
It is necessary to check:
a) the minimum cross-section of the neutral cable must equal one of the phase conductors.
b) the balancing of the loads across the three phases,
c) the values that will trip the protective devices.
4. 6.
values of currents for cable sIzIng
NOTE : these values are only indicative for standard systems.
4. 6.1. Input rectifier currents for Green Power 2.0
Operating conditions are as follows:
• Input/output power supply voltage 3x400V,
• Green Power 2.0 is operating at rated power and batteries are recharging.
POWER on UPS output Max. rectier input current (A)*
320 kVA/ 320 kW 580 A
400 kVA/400 kW 680 A
* Regardless of the conditions (battery recharge, overload, voltage...)
4. 6.2. Mean current supplied by the battery when discharging
The mean current value is to be taken into account for sizing connecting cables between the battery and Green Power 2.0.
Green Power 2.0 Power 320 kVA / 320 kW 400 kVA / 400 kW
Currents (A) 810 A 1010 A
4. 6.3. Bypass current (or output current to the load)
Operating conditions are as follows:
• Input/output power supply voltage 3x400V, for other voltages 380V (320kVA) or 415V, the current values must
be multiplied by 1.05 and 0.96 respectively,
• Green Power 2.0 is operating at rated power.
UPS Bypass
Power kVA 320 400 500 800 1200 2000 2400
Currents (A) 462 578 722 1155 1732 2887 3464
Note: sizing of cables and protections upstream of the bypass shall take into account:
• overloads caused by non-linear loads,
• possible overloads admitted by Green Power 2.0 i.e. (400V / 50Hz, 27°C):
Green Power 2.0 Power 320 kVA / 320 kW 400 kVA / 400 kW
1 hour 110 % 110 %
10 minutes 125 % 125 %
1 minute 150 % 150 %
4. RequiSiteS