Atec Tettex-2293 - Manual

2293
Winding resistance meter with one-time-connection system
The Tettex 2293 is the result of extensive research and
years of experience testing transformers. It incorporates
a fast and highly advanced procedure to measure
winding resistance. A simple one-time-connection
system together with the simultaneous winding
magnetization method drastically reduces measuring
time.
The simultaneous winding magnetization (SWM)
method guarantees fast and reliable measurements
even on large power transformers with delta windings
on the low voltage side, where stable measurements
can be seldom reached using traditional winding
resistance measurement instruments.
In addition, the new demagnetization function
eliminates the magnetic remanence in the core after the
application of a DC voltage. This feature can be used
before performing other tests such as frequency
response analysis (FRA), transformer turns ratio
measurement (TTR) or recovery voltage measurement
(RVM) which are adversely affected by remanence
effects.
The transformer is discharged by a state-of-the-art
discharge circuit in a fraction of the time taken by other
instruments. The discharging function and the
“Caution” indicator continue to operate even when line
power is lost.
FEATURES AND BENEFITS
„ Resistance measurement made easy – simple one-time-
connection system: Once connected will test all phases
and windings
„ Large 7” touch screen interface with full graphical test
visualization
„ Unique simultaneous winding magnetization method
(SWM), equivalent to traditional equipment with up to
100 A test current
„ Tap changer control signal
„ Heat run function and 6 temperature measurement
channels with automatic resistance value correction
„ Data transfer over USB memory-stick or direct to PC
APPLICATIONS
Resistance measurement and demagnetization function for
all types of highly inductive test objects.
„ Power transformers
„ Distribution transformers
„ Generators and motors
„ Instrument transformers
The 2293 is a valuable tool for factory test, acceptance test
and regular maintenance.
A test solution optimized for easy and fast
winding resistance measurement on power and
distribution transformers as well as motors and
generators.
Haefely has a policy of continuous product improvement. Therefore we reserve the right to change design and specification without notice. LL_2293_0311_SG - 1/4
a brand of
Haefely is a subsidiary
of Hubbell Incorporated.