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Introduction The VLF Sinus test system can be remotely-
controlled using a notebook with the
respective software. This is particularly required if you want to operate the test system as
voltage source for the Tan Delta Test Attachment to measure the loss factor tanδ.
Specific electrical
connections
In general, the electrical connection of a remote-controlled device is done in the same
manner as described in section 3.1.
Connecting the Tan Delta measuring equipment does, however, require some additional
work steps which are described in the manual of the Tan Delta Test Attachment.
The connection between the test system and the notebook is established using an
Ethernet patch cable. The notebook supplied by Megger is already properly configured
(drivers and network data) and will establish the connection as soon as the cable has
been plugged in and the test system has been switched on.
Operation
After the connection has been established and the software has been started on the
notebook, the test system switches to slave mode displaying an appropriate message on
the display. As from now, the control by rotary encoder is deactivated. Hence, the test
system can only be controlled by the software. For a detailed description, please refer to
the manual “Software for Remote Control of a VLF Sinus Test System”.
With a USB stick plugged into the test system, log files are exported after completion of a
test as known from stand-alone operation. But in contrast to stand-alone operation, the
export is not indicated on the display.
6 Completing the Test
After the test has been completed, the test object is to be earthed and shorted.
Afterwards, the test system can be disconnected from the test object in accordance with
the safety instructions below.
WARNING
• Follow the five safety rules described in section 1.2.
•
Even if proper disconnection and discharging has taken place, system components
which have b
een under voltage should only be touched if they have been visibly
earthed and shorted.
• Do not undo the earthing and shorting measures before the test object is
operation again.
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