Vertiv Liebert EXM, User Manual

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Vertiv™ | Liebert® EXM™ UPS 20-100kVA, 50/60Hz User Manual | 7
1.0 INTRODUCTION
The Liebert
®
EXM UPS can be configured as either a fixed-capacity or scalable, transformer-free, online
uninterruptible power system with 208/120V input and 208/120V output capability. The Liebert
®
EXM can
operate with either a 50 or 60Hz input and provide a matching output frequency conversion.
When configured for scalability, the UPS’ capacity can be increased in 20 kVA increments. Based on the
configuration, a power module can be set to a redundant operation mode. Contact Vertiv
™ Services about adding
capacity.
Optional transformers are available to add 208V isolation or 480V or 600V input capability to the Liebert
®
EXM
in the optional Liebert
®
BDC (Bypass Distribution Cabinet) and in the optional Liebert
®
EXM Dual Transformer
Cabinet.
The Liebert
®
EXM provides continuous, high-quality AC power to business-critical equipment, such as
telecommunications and data processing equipment. The Liebert
®
EXM supplies power free of the disturbances
and variations in voltage and frequency common to utility power, which is subject to brownouts, blackouts,
surges and sags.
The Liebert
®
EXM utilizes the latest in high-frequency, double-conversion pulse width modulation (PWM)
technology and fully digital controls to enhance its reliability and increase the ease of use.
The 20-100kVA/kW Liebert
®
EXM requires external batteries to support the load when utility power is not
present. For ancillary cabinets, refer to 2.6 - Auxiliary Cabinets .