4 INSTALLING PERMANENT METER UP-2210
The installation process involves fitting the measuring device in an existing equipment cabinet or
similar meter at the selected installation site. This includes the connection to existing instrument
transformers and the chosen communication equipment. The connection to the instrument
transformers must only be made by qualified electrical installers or equivalent personnel to prevent
injury during installation. We recommend making the connections to the measure core and only in
exceptional cases directly to the relay cores.
4.1 Location and fitting
UP-2210 is designed to be installed in an equipment cabinet, so as it is strong and durable. However,
you should still think carefully about the environment, which should be clean and dry and have a
normal ambient temperature. The communication with the unit can also influence where the unit is
installed.
The figure above shows a UP-2210 installed in typical a Swedish substation (130/10 kV), where the
voltage and current inputs are connected via existing terminal boxes, which in turn are connected to
existing instrument transformers.
The UP-2210 can be used with all standard connection options, and can measure both line-to-neutral
and line-to-line voltages.
Note: If the meters are used with external/internal modem, keep in mind that phone lines are
easily affected by lightning. Modems usually don’t have lightning protection. Unipower
recommends that external lightning protection is installed between the phone line and
modem in exposed locations, in order to protect the meter from damages caused by
lightning.
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