SNR UPS-ONT-010-BXL31 [9/34] Battery

Product Description

High Performance 10-20k UPS

 RS232: DB9 type, used to connect monitoring software

1.5 System description

TVS&RFI/E

MI filter

PFC INV

CHG

battery

STS

Input

source

SPS DSP

Fig 1- 3: UPS system

1.5.1 Transient Voltage Surge Suppression (TVSS) and EMI/FRI Filters

These UPS components provide surge protection and filter both electromagnetic interference (EMI)

and radio frequency interference (RFI). They minimize any surge or interference present in the

utility line and keep the sensitive equipment protected.

1.5.2 Rectifier/Power Factor Correction (PFC) Circuit

In normal operation, the rectifier/power factor correction (PFC) circuit converts utility AC power to

regulated DC power for use by the inverter while ensuring that the waveform of the input current

used by the UPS is near ideal. Extracting this sinewave input current achieves two objects:

 The utility power is used as efficiency as possible by the UPS.

 The amount of distortion reflected on the utility is reduced.

This results in cleaner power being available to other devices in the building not being protected by

the UPS.

1.5.3 Inverter

In normal operation, the inverter utilize the DC output of the power factor correction circuit and

inverters it into precise, regulated sinewave AC power. Upon a utility power failure, the inverter

receives its required energy from the battery through the DC-to-DC converter. In both modes of

operation, the UPS inverter is on-line and continuously generating clean, precise, regulated AC

output power.