Atec Tettex-2293 - Manual (Page 2)

COMPLETE AUTOMATIC TEST PROCEDURE
The 2293 performs resistance measurements on all
windings without any reconnection. The test procedure is
simple and efficient. One end of the measurement cable set
is connected to each bushing of the transformer using the
special Kelvin clamp, while the other end is connected to
the 2293.
Once the cable set is connected to the test object, the
instrument will automatically measure selected resistances
of both windings and all phases. In addition, the motorized
tap changer can be controlled to perform fully automated
measurements on all taps. A complete transformer can be
tested by a single person in a fraction of the time compared
to traditional instruments.
GRAPHICAL INTERFACE
The 7” touch screen full graphical interface guides the
operator through the test procedure.
Select the test object by touching the appropriate icon and
press start – The unit then visualizes each test cycle and
displays the results graphically or in list format.
DEMAGNETIZATION FUNCTION
Applying a DC current to an inductive test object, like a
power transformer, magnetizes the core. The resulting
magnetic remanence will have an adverse effect on other
measurements.
The 2293 includes a fully automatic demagnetization
feature which eliminates the magnetic remanence. Select
the test object by touching the appropriate icon and press
start – The unit visualizes the whole demagnetization cycle
and performs the correct core demagnetization.
HEAT RUN TEST
The 2293, which can measure HV and LV side resistances
simultaneously and accurately, is the perfect tool for
resistance measurements during a heat run test.
The instrument provides efficient and accurate acquisition
of the required data points to allow drawing
the necessary cooling curve.
Results are available as CSV and can be easily exported.
DATA HANDLING AND TEST REPORTS
The 2293 allows easy data handling. Results can be saved
on a USB memory stick or transferred to any computer. In
addition the instrument can be connected via Ethernet to a
LAN. It also includes a thermal printer for immediate report
printing.
Select
Start
Results can also be saved in the instrument’s memory
while continuing testing, to be downloaded later after
having returned to the office.
Results
Haefely has a policy of continuous product improvement. Therefore we reserve the right to change design and specification without notice. LL_2293_0311_SG - 2/4
a brand of
Haefely is a subsidiary
of Hubbell Incorporated.