6.0
Service Data
6.1
Preventive Maintenance
The unit utilizes surface mount technology (SMT) and other components which require little or no
service except for routine cleaning, etc. The unit should be serviced in a clean atmosphere away
from energized electrical circuits.
6.1.1 Examine the unit every six months for:
Dust and Dirt
To clean the unit, disconnect the power cord from the unit.
Never use spray liquids or industrial cleaners. Some cleaning
solvents can damage electrical components, and should
never be used. Water and a mild soap may be used. Use a
lightly damp cloth (not dripping wet) to wipe off the unit. A
dirty heat sink can cause thermal overloads. Remove dust
with dry, low pressure, compressed air. Either remove the
module from the chassis or simply apply air forcing the dust
away from the heat sink.
Moisture
Remove moisture as much as possible by putting the test set
in a warm, dry environment.
6.2
MPRT Ethernet Port and IP Networks
The Ethernet port on the MPRT serves three very valuable purposes. It is the highest
speed communication port in the MPRT unit. This port maybe used to download large
blocks of data into the unit. It is used to download digital samples for DFR playback,
download software / firmware updates and future use in automated substations using the
IEC 61850 standard. Since each output channel is capable of storing up to 256,000
samples of Digital Data, such as in Digital Fault Recordings for DFR playback, and with
up to eight channels that equals over 2 million samples. Using the RS-232 port would
take several minutes to down load at a 9600 baud rate. The MPRT has selectable baud
rates up to 115,200, which would reduce the download time. The Ethernet port on the
MPRT would download the same data in less than 1 second. In addition to high speed
downloads of DFR data, the port is also used to talk the MPRT unit via a Network.
Through the Ethernet port, the MPRT integrates into a network just like a PC or server.
Being able to talk to the unit via a Local Area Network (LAN) is a very important feature of
the MPRT unit, since it allows the user to automatically upgrade the unit software /
firmware through the internet. This means that it may not be necessary to return the unit
to the factory for firmware upgrades. This saves time, money and provides the latest in
new added features or firmware updates with the push of a single button. In addition, this
makes the MPRT suitable for future use of the IEC 61850 standard and the automated
testing of IED’s through the substation’s Local Area Network. To use this feature requires
the user to setup the IP configuration of the MPRT for their LAN. This will probably
require assistance from the company’s information management department (the
department responsible for maintaining your company’s network). The information that is
needed to setup the MPRT for automatic download of firmware upgrades is, the Default
Gateway address and an IP address for the MPRT unit. All this information should be
available from your information management department.
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