2914 Solid Test Cell0 pages

2914
Test Cell for Solid Insulates

The newly developed test cell is used for dielectric
tests, i.e. It determines dissipation factor tan and
dielectric constant r on test objects of solid insulates
such as paper and plastic foils, as well as the specific
resistivity.

FEATURES

The test cell is equipped with a shielded measuring
electrode (guard ring) which eliminates partial
capacitances which influence the test results.

The heating-up time is short

This new design is the result of longstanding
experience in the field of test cell building. It has been
designed in accordance with VDE specifications 0303,
0311, 0345 (Fed. Republic of Germany), the ones of
SEV (Switzerland), and the recommendations of
CIGRE, IEC and ISO, as well as with ASTM standards
(USA).

The measuring electrode can be removed from the test

MEASURING INSTRUMENTS

Measurements can be carried out under protective gas

High precision C, L & tan Measuring bridge type
2840
C, L & tan Measuring bridge

type 2821

standards and specifications.

The test cell is heatable

The temperature is adjustable up to 300°C

Object while the bell-jar is on unit
The pressure acting against the test object can be
adjust from outside and monitored at any time

The test cell can be evacuate

The test cell can also be used for impregnation
purposes

type 2820a

C and tan Measuring bridge

The test cell is in accordance with international

Standard capacitor, 100 pF
Dimensions
Weight

type 3320/100

450 x 340 x 420 mm
(17.7 x 13.4 x 16.5 inches)
23 kg (51 lbs)

COMPLETE TEST SYSTEM
For dielectric measurements on test objects of solid
insulates Tettex offers complete test systems.
Dissipation factor tan measurements are carried out
most efficiently with the complete dissipation factor and
capacitance measuring bridge with resonant power supply
type 2821.
Other measuring equipment is listed under „order
specification“. Always check suitability of the equipment
for the considered test cells. It should be noted that the
power supply used must have a lower short-circuit power
characteristic (e.g. a resonant power supply).
To heat up and to evacuate the test cell, we recommend
our temperature controller type 2967 and our reliable
vacuum pump type 2973.

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