Tripp Lite H2552FL28, H2550FL16, H2562, H2561, H2553, H2551, H2550EFL16, H2552EFL28U manual Manageability

adequate. Generally, line-interactive UPS Systems do not pose a problem. This is the subject of some debate and is generally presented as a major issue by vendors biased towards selling online UPS Systems.

Line-interactive UPS Systems do tend to cost less than on-line UPS Systems and operate with higher efficiency, reducing electrical costs.

In theory, an on-line UPS System battery should be used less frequently due to input voltage variation, and will therefore last longer. This advantage will manifest itself more as the frequency of input voltage variation increases.

B. Harmonic Distortion

Only an on-line UPS System will address input harmonic distortion. Because an on-line UPS System deconstructs and reconstructs the input power, it can deliver distortion-free power. A line-interactive UPS System will pass through input waveform distortions. Harmonic distortion tends to be an elusive “gremlin” issue when it affects connected loads.

C. Transient Spikes (or “Surges”)

Both line-interactive and on-line UPS Systems address sudden increases in voltage.

D. Electromagnetic Interference

While both line-interactive and on-line UPS Systems address these phenomena, an on-line UPS typically offers far superior filtering capability.

3. Manageability

VoIP system availability is closely tied to UPS System manageability. To ensure continuous availability, UPS Systems must be incorporated as an integral part of a sound hardware management scheme. UPS Systems are extremely manageable and responsive, communicating their status automatically and triggering application shutdowns prior to battery exhaustion in the event of a power outage or extreme voltage variation.

There are various methods to communicate with UPS systems, including SNMP, Web, network software and direct connection. While most users choose SNMP/Web accessory cards installed inside UPS Systems for communication, the most essential requirement is to deploy and use some method of communication. Without a management application running for your UPS Systems, the day will come when the UPS batteries fail and your system fails as your power fails. Simple management steps taken at installation can save significant problems later.

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