AJ0383DE ZP-AJ01E TRAX
29
5 OPERATING INSTRUCTIONS
4] Press .
For calculation 1, select ratio “/” (division)
between Gen U and Ch 1.
If phase deviation is to be recorded, for
calculation 2, select “Phase” between Gen U
and Ch 1.
5] Connect CT terminal S2/X2 to ground.
6] Connect black generator terminal to S2/X2
and green (250V)/red (2200V) generator ter-
minal to CT terminal S1/X1.
7] IMPORTANT
Connect P1/H1 (or P2/H2) to ground.
Connect Ch1 terminals to primary winding,
black terminal to P2/H2 and red terminal to
P1/H1.
8] Select an appropriate test voltage, best accu-
racy is achieved at about 75% of saturation
voltage.
9] Press to start the generating.
10] Wait for results to stabilize
11] Press and read results.
TIP
If saturation voltage is unknown: start
energizing with a low voltage, approx-
imately 1% of generator max voltage.
Increase the voltage slowly until excitation
current starts increasing considerably
(e.g. to 100mA) and the lower voltage to
about 75% of its value result in high cur-
rent. Now a high accuracy measurement
of “ratio with voltage” is achieved.
CT ratio with current
Caution
Make sure that one side of primary side
winding is connected to ground at all
times. Otherwise, the measurement re-
sults will be affected and the instrument
may be damaged.
1] Select 0-200 A (or 0-800 A if TRAX 280) gen-
erator.
Select frequency, typically 50 or 60 Hz.
2] Activate Int Gen I, configure it to Freq.
3] Activate channel Ch 1, configure it to Current
(A) and Freq.
4] Press
For calculation 1, select ratio “/” (division)
between Gen I and Ch 1.
If phase deviation is to be recorded, for cal-
culation 2, select “Phase” between Gen I and
Ch 1.
5] Connect CT terminal S2/X2 to ground.
Connect black Ch 1 terminal to terminal S2/
X2 and blue Ch 1 to terminal S1/X1.
6] IMPORTANT
Connect P1/H1 (or P2/H2) to ground.
Connect 200A/800A current output terminals
to primary winding, black terminal to P2/H2
and red terminal to P1/H1.
7] Select an appropriate test current, usually
rated primary current or a fraction of rated
primary current.
Make sure expected resulted secondary cur-
rent is lower than 1 A (IEC) or 5 A (IEEE).
8] Press to start the generator.
9] Wait for results to stabilize
10] Press and read results.
Voltage withstand measurements
1] Select 2.2 kV generator and 55 Hz.
2] Select Gen I and GenU measurement chan-
nels set to Freq.
3] If insulation properties are to be measured,
press and select e.g. Cp and PF.
4] Connect red terminal to the actual test object
and black terminal to ground
5] Make sure the test object is connected to
ground at one end (generator black)!
6] Set the test voltage as high as possible with
respect to the test object. In most cases 2.2 kV
is used.
7] Press to start the generator
8] Wait for results to stabilize.
9] Press and read results.
Note The test mode is GST-GND which means that
the total current to ground will be measured.
The test result will be affected by all stray
capacitors including e.g. cables and surface
current. To estimate the effect of cables (typ-
ically 50-100 pF), measure the cables without
connecting to the specimen.
To Next Page
Loading...
Need help?
General
