Eaton Power Xpert PXM 4000, Руководство пользователя и инструкция по установке

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Page 271
H Data Files
H DATA FILES
The Power Xpert Meter provides an FTP site, with anonymous access, that contains the
following types of logs from the meter:
• COMTRADE Files
•
Trend Logs (in .csv format). Because of the number of data fields that are recorded,
the trend logs are broken into three separate files.
• Energy Logs (in .csv format)
H.1. Accessing the Files
Using an FTP client, such as Microsoft Internet Explorer, Filezilla, or the command line
FTP utility, open
FTP://
ip_address
Where ip_address is the IP address of the meter.
Note: If you use Internet Explorer, you can select Open FTP Site in Windows Explorer
from the Page menu and use the familiar File Explorer to copy files down to your local
computer.
The FTP site has three directories:
energy
(energy logs),
trend
(trend logs), and
wave-
forms
(COMTRADE files).
H.2. COMTRADE Files
The COMTRADE (Common Format for Transient Data) file format is an IEEE standard
for storing and exchanging various types of transient electrical data. COMTRADE was
developed for the power industry, and specifies such things as the sources of the data,
sampling rate, and filters. A set of three files is required:
• A header file (with a
.hdr
extension)
• A configuration file (with a
.cfg
extension)
• A data file (with a
.dat
extension)
All three files are required for data exchange. The COMTRADE files store the following
data:
Voltage Current Digital Input Channel*
VAG IA DI1
VBG IB DI2
VCG IC DI3
VNG IG DI4
VAGAUX IN DI5
VBGAUX DI6
VCGAUX DI7
DI8
RESERVED1
*Waveforms (1 ms resolution) from digital inputs 1 through 8.