Specifications

Great Value in a Mid-Range UPS
The Liebert Npower gives you more UPS for about the same initial
cost as lesser products. Furthermore, the Npower will usually
cost significantly less over the lifetime of the product. The value
comes from several elements: exceptional protection, higher
efficiency, lower installation, maintenance and operating costs,
smaller total system footprint and more standard features.
Higher Efficiency in Real-World Applications
Critical applications require a UPS to have an input filter (to
reduce input current distortion) and an output isolation
transformer (to isolate your critical load), while powering
non-linear (high-crest-factor) loads at less than the rated capacity
of the UPS.
The fully equipped Liebert Npower has excellent efficiency
— typically between 92% and 93.5% — while powering
high-crest-factor loads between 50 and 100% of its rated
capacity. Furthermore, the input power factor is exceptionally
high, typically 0.95 to 0.96 for models with 480 VAC input.
In this power range (up to 130 kVA), the only way to exceed
93.5% efficiency is to leave out something important. Some
competitors omit the output isolation transformer; others put
your critical load at risk with their single-conversion UPS products.
Only you can decide if the claimed savings justify the risk.
Enterprise UPS
High-Availability Configurations
The Liebert Npower UPS can be used reliably as a single
module and in various redundant configurations. The
Npower 1+1 Redundant option, described on pages 10-11
of this brochure, is a cost-effective parallel-redundant
system. Parallel redundancy improves maintainability and
fault tolerance, thereby enhancing system availability.
For the ultimate in high-availability systems, Npower can
be applied in various distributed-redundant (dual-bus)
configurations, using our unique Load Bus Sync™ option.
Both Load Bus Sync and 1+1 Redundant configurations
can be factory-installed or retrofitted to existing Npower
installations.
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