Protection Against Voltage Backfeed - LEGRAND KEOR XPE Serie Manuel De Fonctionnement

The cable sections do not take into consideration the overload values permitted by each line.
The manufacturer of the UPS is not responsible for correct dimensioning of the power circuits of
the apparatus, for which the conditions of the system or the operating temperatures
characteristic of each electrical installation must be taken into consideration.
Rated currents (at full charge and with battery charging) for each Power Unit
Power (kVA)
Rectifier input [A]
Bypass Input / Output [A]
Battery [A]
(1)
Values at rated voltage of 400Vac
4.2

PROTECTION AGAINST VOLTAGE BACKFEED

The UPS KEOR XPE is equipped with protection against voltage backfeed, installed on the
power switch of the bypass static switch (SBCBS).
The installation technician must apply the following label on all the devices powering the UPS.
- Then check for
46 OMAF9212 REV. A
Installation and start-up of KEOR XPE UPS
Installation et démarrage de l'ASI KEOR XPE
Installazione e avviamento KEOR XPE UPS
(1)
(1)
Before working on this circuit
- Isolate uninterruptible power system (UPS)
hazardous
including the
Risk of Voltage Backfedd
250
414
361
411
voltage between all terminals
protective earth
300
498
433
493