Omicron Lab CT Analyzer, User Manual

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CT Analyzer User Manual
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2.2 Setting Up the CT Analyzer
Proceed as follows to set up the CT Analyzer :
1. Make sure to position the CT Analyzer on dry, solid ground.
2. Connect the grounding terminal on the CT Analyzer ’s side panel (see section
1.2 on page 12) to protective ground (PE). Use the original cable supplied by
OMICRON or alternatively a solid connection of at least 6mm
2
. Use a ground
point as close as possible to the test object.
3. Connect the CT Analyzer to mains using the supplied power cord. Supply the
CT Analyzer only from a power outlet that is equipped with protective ground
(PE). An error message (901) appears if the PE connection is defective or if
the power supply has no galvanic connection to ground.
4. Connect the equipment under test according to the instructions given in this
manual. Refer to sections 2.4 and 2.5 for detailed descriptions how to
connect the
CT Analyzer for a specific measurement and/or application.
Warning: Feeding test voltage to a tap of a multi-ratio CT can cause life-
threatening voltages on other taps with higher ratios. Do not touch these taps!
Using the optional CT SB2 switch box can make the testing of multi-ratio CTs
much safer. If necessary, the CT Analyzer then reduces the test voltage in a
way that the maximum possible voltage within the measurement setup (i.e., the
voltage occurring at the tap combination with the highest ratio) is limited to
200V.
Warning: The error message 901 is a safety relevant message! This
message may appear if protective ground or equipotential ground is not
connected properly or if the power supply does not have galvanic
connection to ground, which can be the case in very special grid
applications or if the
CT Analyzer is supplied by a generator or an isolating
transformer. For safe operation always make sure that protective ground
and equipotential ground are connected properly.