1745
Users Manual
12
Using the 1745 Power Quality Logger
This section explains how to operate the 1745 Power Quality Logger. You
should also refer to the PQ Log Users Manual to become familiar with the
software you use to prepare the Logger for use and download logged data.
A typical logging session includes four steps:
1.
Preparing the Logger for use with the PQ Log software.
2.
Installing the Logger at the logging site.
3.
Leaving the Logger to collect data for a period.
4.
Downloading and evaluating the logged data.
These steps are described in the following pages.
About Logging Jobs
Logging jobs are defined using the PQ Log software, and transferred to the
Logger over the RS-232 cable. Each job contains the following information:
•
Logging function P or A
•
Measuring period, defined by start and end times
•
Time activated, switch or immediate job
•
Nominal voltage
•
Power type (wye, delta, etc.)
•
Averaging period length
•
Logging time period
•
Interharmonics and signaling voltages
•
Limit values for events
•
Memory model for events: circular (first-in/first-out, continuous), or
linear (quit logging when logging period is finished)
•
Logging of current - neutral wire
•
Optional converter ratios for current and voltage if using potential
transformers (PTs) and current transformers (CTs) at a medium-
voltage network site
Summary of Contents for 1745
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