Vertiv Liebert EXL Operation And Maintenance Manual

Vertiv
™
| Liebert® EXL™ 625-1100kVA Operation and Maintenance Manual | Rev. 8 | 02/17 30
3.2 MANUAL OPERATIONS—1+N SYSTEMS
3.2.1 Startup—1+N Module System
If the installation includes a Maintenance Bypass, power may already be supplied to the critical load equipment
through the Maintenance Bypass. If there is no power to the critical load, apply power through the UPS bypass
line per the following procedure.
During startup, power is supplied to the critical load through the UPS (internal) bypass line while the UPS system
is being energized. Depending on the reason for the UPS system shutdown, power may be present in the bypass
line. To determine this, check the Monitor/Mimic Display screen after control power is available.
!
WARNING
Risk of electrical shock. Can cause equipment damage, personal injury and death.
The following procedure provides power to the critical load distribution system. Verify that the critical
load distribution is ready to accept power. Make sure that personnel and equipment are ready for the
critical load distribution system to be energized.
!
AVERTISSEMENT
Risque de décharge électrique pouvant entraîner des dommages matériels, des blessures et même la
mort.
La procédure suivante fournit de l’énergie au système de distribution de la charge critique. Vérifiez que ce
système est prêt à être alimenté. Assurez-vous que le personnel et les équipements sont préparés pour la
mise sous tension du système de distribution de la charge critique.
NOTE
If the system was shut down in response to an Emergency Off, there may be alarm messages on the touchscreen
that describe system conditions before (or at the time of) the shutdown. Some or all of the alarm conditions may
have been resolved. Contact Vertiv Services for assistance in clearing any remaining alarm messages.
!
WARNING
Risk of electrical shock and high short circuit current. Can cause equipment damage, personal injury and
death.
If the UPS has been shut down for maintenance, verify that all of the UPS doors are closed and latched.
All test equipment must be removed from the system. All electrical connections must be secure.
!
AVERTISSEMENT
Risque de décharge électrique et de présence de courant de court-circuit élevé pouvant entraîner des
dommages matériels, des blessures et même la mort.
Si l’alimentation sans coupure a été interrompue à des fins d’entretien, assurez-vous que toutes les portes
du système ASC sont fermées et verrouillées. Tous les appareils de test doivent être retirés du système.
Tous les branchements électriques doivent être serrés.
!
WARNING
Risk of electrical shock and arc flash. Can cause property damage, injury and death.
The following procedure must be performed exactly as described. Deviating from the procedure can
result in electric shock hazard to personnel and the risk of fire.

Vertiv Liebert EXL Specifications

General

Brand	Vertiv
Model	Liebert EXL
Category	UPS
Language	English