PQube User Manual 2.1
Page 6 of 113
Introduction
What Can Your PQube Do?
Your PQube® is an instrument for monitoring electric power systems.
It is convenient to think of it as a combination of a power disturbance monitor, a power meter, a
power recorder, and a digital camera – it combines the best features of all four.
Your PQube records disturbances on the mains circuit: sags/dips, swells, interruptions, frequency
variations, and disturbances on two analog input channels. It also records impulses, waveform
snapshots, unbalance, flicker, and THD, and trend data (strip charts and cumulative statistics).
When equipped with an optional current sensing module,
your PQube also records current waveforms, RMS amps,
power and carbon. It measures watts, watt-hours, VAR’s,
power factor, and other power-related parameters.
You don’t need any software from PSL to use
your PQube. It records all data on a SD
memory card, which can be read by any
computer. No special software is required –
just open the GIF picture files with standard image programs, or even Microsoft
Word® and Microsoft PowerPoint®, or open the CSV files with any spreadsheet
program such as Microsoft Excel® (or OpenOffice.org Calc if you prefer something
free). Configure your PQube with our free PQube Configurator program, or by
editing a text file on the SD card.
It can monitor single-phase or three-phase circuits, at up to 690 VAC phase-to-phase (400 VAC
phase-to-earth), at 50 Hz, 60 Hz, and 400 Hz.
It includes channels for measuring auxiliary voltages – typically 24V AC or 48V DC.
It also has a general-purpose digital input, which you can control with switch contacts or a logic
signal, and a relay contact output, which opens for at least 3 seconds whenever your PQube
detects an event.
It can be directly powered from 24V AC or 24~48V DC, or it can be equipped with an optional PS1
power supply that operates from 100V ~ 240V, 50/60 Hz.
Your PQube also measures and triggers on temperature and humidity at up to two locations, using
optional TH1 temperature-humidity probes.
When equipped with an optional ETH1 Ethernet module, your PQube can automatically send you
e-mails whenever it detects an event. You can send your PQube a new setup file, or even update its
firmware via e-mail. The Ethernet module also includes a web server, an FTP server, and MODBUS
over TCP, giving you even more ways to communicate with your PQube.
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