Tan
Delta (also referred to as
"Power Factor") is the
ratio of the Resistive Power
versus the Capacitor Power of the
dielectric material. It is the
measure of the quality of the
insulation medium. The TD60
provides the testing and
commissioning engineer with a high
voltage tan delta measuring system
suitable for testing cables: XLPE,
PE, EPR, PILC and other electrical
equipment: capacitors, switchgear,
transformers and rotating
machines.
Tan
Delta testing enables the cable
test engineer to detect insulation
defects before the cable fails in
service. The TD60 is a versatile
tan delta measuring system that is
directly connected to the H.V.
Diagnostics and HVA Series of VLF
Test Systems. The tan delta of the
test object can be measured
quickly and the results stored,
thus providing a
"signature" of the cable
being tested. This enables the
cable engineer to make tan delta a
routine test and combine this
diagnostic test with the normal
over voltage pressure
"testing" to provide a
smart VLF test.
H.V.
Diagnostic SARL produce 2 models
TD30 for the TD Measurements up to
max voltage of 23kVrms (33 kV
peak), and the TD60 for TD
Measurements up to a max voltage
of 44kVrms (or 62kV peak). The
TD30/60 is a battery powered
system that is diectly connected
to the HVA30 Series of VLF Test
systems. The TD30/TD60 uses
standard C Type akaline batteries
which last for 10 hours thus
providing the capacity for many
tests. The TD30/TD60 is supplied
with 10 meters of output cable
which is terminated to suit the
HVA30/60 test system. The
TD30/TD60 is supplied complete
with operating software which
gives a complete picture of the
tan delta measurement together
with a real time wave form of the
output voltage and current. The
Data transmission to a Laptop PC
or PDA is via Bluetooth wireless
communcation thus eliminating
hardwires or fibre optic cables to
minimise the hookup time and
operator errors.
