Control And Operation Devices; Isolators - LEGRAND KEOR HPE Manuel De Fonctionnement

3.4

CONTROL AND OPERATION DEVICES

The control and operation devices of the UPS are indicated below:
 Isolator on rectifier input (RCB)
 Isolator on bypass input (SBCB)
 Isolator on UPS output (OCB)
 Manual bypass isolator (MBCB)
 Battery Isolator / Circuit breaker (BCB) - External, inside the battery cabinet for
KEOR HPE 100-125-160kVA
 Emergency power off button (EPO)
 Normal/Bypass selector
 LCD control panel
Check the personnel training
The use of the operation and control devices of the UPS is intended for authorized
personnel only. We recommend to check the training of the personnel responsible for the
use and maintenance of the system.

3.4.1 Isolators

The isolators provided on the UPS are used to isolate the power components of the device from the AC
supply line, from the storage battery and from the load.
Voltage present on terminals
The isolators do not isolate the UPS completely, since AC voltage is still present on the
UPS input terminals. Before carrying out any maintenance on the unit:
 Isolate the device completely by operating the external circuit breakers;
 Wait at least 5 minutes in order to allow the capacitors to discharge.
UPS user manual
Manuel de l'utilisateur de l'ASI
Utilizzo dell'UPS
OMG38225 REV.F 19