Applications
- Dissipation
Factor (tg d) of transformer oil and
others insulating liquids and solids
- Dielectric
constant of liquid and solid insulating
materials
- Can be
supplied with test cells according to IEC
247 and ASTM D 924 standards
- For
laboratory use or to perform sample tests
in the field
Features
- Capacity and
Dissipation Factor Bridge, Power Supply
and Standard Capacitor as a whole system
in a single cabinet
- Direct
reading of capacity and dissipation
factor with digital display
- High accuracy
and resolution, can be used for type
tests of transformer oil
- High
resolution also with low voltage
- Transformer -
Ratio Bridge guarantees long term
stability
- Tests are
performed at industrial frequency (50 or
60 Hz)
- All cable
connections are at the rear panel
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Description
CONIMED Model TD50
/ LS is an integrated system to perform tan delta
tests on insulating materials like transformer
oil.
The test cell
supplied fulfills requirements of Standards IEC
247 and 250, and ASTM D924 and D150. The test
cell is normally used together with the digitally
controlled thermostatic bath Model TB110, that
allows tests to be performed from ambient
temperature up to 110 șC.
Modern transformer
oils can exhibit a dissipation factor as low as 0.04
%. That is the reason that it is used a three
terminal type test cell, and the whole system
must be capable to measure low capacities at low
voltage with high resolution and accuracy.
The test voltage
can be adjusted between 0 and 1000 V when the
test object capacity is below 1000 pF. The oil
test cell capacity is around 76 pF in air.
Only 40 ml of oil
are needed from each sample. The test system can
be use in the field to measure tan delta while
oil is being treated.
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