American Power Conversion PX user manual Thank You SymmetraTM Overview, Theory of Operation

Thank You!

Thank you for investing in the SymmetraTM Power Array. Please read this User's Manual thoroughly before installing the sys- tem. It provides important information for using the SymmetraTM safely and effectively.

SymmetraTM Overview

The SymmetraTM is a high-performance, uninterruptible power “array” system, designed for large-scale loads. It pro- vides conditioned, reliable AC power to load equipment, and provides protection from power blackouts, brownouts, swells, sags, surges and interference. The SymmetraTM Power Array system is comprised of either a MiniFrame, or a MasterFrame, and a variable set of modules. A MiniFrame system can be configured to deliver a maximum output of 8kVA, and a MasterFrame system can deliver a maximum of 16kVA.

Fig I-1 MiniFrame and MasterFrame

Theory of Operation

The SymmetraTM Power Array is comprised of three func- tional components: A power processing system, a battery source, and a control/user interface system. The relationship of these functional components is illustrated in figure I-2.

System Control
and Interface
Powerview User	Communication
Interface	Card and
	SmartSlotsTM
Communication	Communication
Power Processing	Battery Source
	Charge

	Bypass
AC	Switch
	AC
IN	OUT

Fig I-2 Functional Diagram of a SymmetraTM

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