Vertiv™ |
Liebert® EXM™ UPS 20-100kVA, 50/60Hz User Manual
|
43
Example 2
•
Four 50kVA power modules installed
•
Nameplate rating capacity = 200kVA
•
One power module in redundant mode
•
Configured capacity = 150kVA
•
Load = 150kVA
Load percentage will be calculated based on available power module capacity = 200kVA capacity. In the event of a
single power module fault, the system will signal a Loss of Redundancy Alarm and a Power Hardware Mismatch
Alarm. The system will continue in double-conversion mode and provide up to 150kVa capacity.
Example 3
•
Four 50kVA power modules installed
•
Nameplate rating capacity = 200kVA
•
One power module in redundant mode
•
Configured capacity = 150kVA
•
Load = 175kVA
Load percentage will be calculated based on available power module capacity = 200 kVA capacity. The system will
signal a Loss of Redundancy Alarm. The system will continue in double-conversion mode and provide up to 200kVA
capacity.
Frequency Converter Mode
When the Liebert
®
EXM to is set to Frequency Converter Mode permits configuring the unit for 50Hz output,
bypass is disabled and battery is optional to support load. This mode can only be enabled at the factory or by
Vertiv
™
Services.
Power Conditioner Mode
When EXM is set to Power Conditioner Mode, the battery is disabled in this mode. This mode can only be
enabled at the factory or by Vertiv
™
Services.
Maintenance Mode
For maintenance or repair, the Liebert
®
EXM may be operated in maintenance mode. To place the Liebert
®
EXM
in maintenance mode, follow the instructions in
6.6 - Switching the UPS from Normal Operation to
Paralleling Mode
This option is available only on 208V Input Parallel with the optional Liebert
®
EXM Paralleling Cabinet. It can
parallel the following:
•
Two Liebert
®
EXM’s
•
60-100kW frames in any module capacity
•
Redundant
•
Can allow up to 200kW of load capacity
WARNING
Risk of arc flash and electric shock. Can cause equipment damage, injury and death
The UPS input and output must be protected with external overcurrent protection devices. In
maintenance mode, the input and output busbars remain energized and present an electric shock hazard.
AVERTISSEMENT
Risque d’arc ou de décharge électrique pouvant entraîner des dommages matériels, des blessures et
même la mort.
L’entrée et la sortie du système ASC doivent être protégées par des dispositifs de protection de
surintensité externes. En mode d’entretien, les barres omnibus d’entrée et de sortie demeurent sous
tension et présentent un risque de décharge électrique.
Summary of Contents for Liebert EXM
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